Which of the following will increase the ANGULAR MOMENTUM of a person spinning on a rotatable frictionless bar chair?

Q-1: Which of the following will increase the ANGULAR MOMENTUM of a person spinning on a rotatable frictionless bar chair?

1) moving the arms closer to the body
2) moving the arms farther from the body
3) moving one arm farther from the body and the other arm closer to the body with spastic repetition
4) none of these
ANSWER: 4 -- NONE OF THESE

Q-2: What is the relationship between the frequency and the period of a wave?

ANSWER: THEY ARE INVERSES OF EACH OTHER

Q-3: For the hydrogen atom, which series describes electron transitions to the N = 2 orbit? Is it the:

1) Lyman series
2) Paschen series
3) Balmer series
4) Pfund series
ANSWER: 3 -- BALMER SERIES

Q-4:  The unit of mass in the English system of measure is which of the following?

1) pound
2) gram
3) slug
4) dyne
ANSWER: Y -- SLUG

Q-5: What law asserts that it makes no difference in what grouping we add vectors?

ANSWER: ASSOCIATIVE LAW OF VECTOR ADDITION

Q-6:  A ball is thrown vertically upwards from the ground with a speed of 80 feet/second. In the English system of units, what is the magnitude and direction of the acceleration of the ball?

ANSWER: 32 FEET PER SECOND SQUARED DOWN or TOWARDS THE
EARTH

Q-7: A baseball bat strikes a ball with a force of 30 newtons. If the ball was in contact with the bat for 1/10 of a second, what impulse did the ball receive?

ANSWER: 3 NEWTON-SECONDS

Q-8: A pendulum which is suspended from the ceiling of a railroad car is observed to hang at an angle of 10 degrees to the left of vertical. Which of the following answers could explain this phenomena?

1) The railroad car is at rest.
2) The railroad car is accelerating to the left.
3) The railroad car is moving with constant velocity to the right.
4) The railroad car is accelerating to the right.
ANSWER: 4 -- THE RAILROAD CAR IS ACCELERATING TO THE RIGHT.

Q-9: At time t=0, a body has a velocity of 5 meters per second, EASTWARD; at time t=2 seconds, its velocity is 7 meters per second WESTWARD. What is the MAGNITUDE of the body's average acceleration?

ANSWER: 6 METERS PER SECOND SQUARED

Q-10:  A man exerts a northward force of 100 newtons on a 50 kilogram box which sits on a level floor. If the frictional force is 80 newtons, what is the magnitude of the northward acceleration of the box?

ANSWER: 0.4 METERS PER SECOND SQUARED

Isotopes of an element have different numbers of NEUTRONS

Q-1: Isotopes of an element have different numbers of:

1) electrons
2) protons
3) neutrons
4) leptons
ANSWER: 3 -- NEUTRONS

Q-2: Multiple Choice: Which one of the following particles travels at the speed of light?

1) neutrons
2) electrons
3) photons
4) muons
ANSWER: 3 -- PHOTONS

Q-3:Heat is transferred from the sun to the earth primarily by:

1) conduction
2) convection
3) radiation
4) condensation
ANSWER: 3 -- RADIATION

Q-4:A block of wood initially at rest slides down an inclined plane. Neglecting friction, the kinetic energy of the block at the bottom of the plane is:

1) all converted into heat
2) equal to its potential energy (with respect to the bottom of the plane) when it was at
the top of the plane
3) less than its kinetic energy at the top of the plane
4) dependant on the materials of which the block is made
ANSWER: 2 -- EQUAL TO ITS POTENTIAL ENERGY (WITH RESPECT TO THE BOTTOM OF PLANE) WHEN IT WAS AT THE TOP OF THE PLANE.

Q-5: When an atom undergoes beta decay, the atomic number of the nucleus:

1) is unchanged
2) increases by one
3) decreases by one
4) none of the above
ANSWER: 3 -- INCREASES BY ONE

Q-6: Name any three of the six quarks.

ANSWER: UP, DOWN, CHARM, STRANGE, TOP (or truth), BOTTOM (or beauty)

Q-7:There are four fundamental forces in nature. A particle has been associated with each of these four forces. Name any TWO of these particles.

ANSWER: GRAVITON (for gravity), PHOTON (for electromagnetiy), GLUONS for S

Q-8: The force on a charged particle moving parallel to magnetic field lines is:

1) in the direction of the field
2) zero
3) perpendicular to the field
4) in the opposite direction of the field
ANSWER: 2 -- ZERO

Q-9: In any collision, which of the following is conserved:

1) kinetic energy
2) velocity
3) momentum
4) potential energy
ANSWER: 3 -- MOMENTUM

The Modulus of Elasticity for a material refers to THE RATIO OF STRESS OVER STRAIN

Q-1: The Modulus of Elasticity for a material refers to:

1) the ability of a material to resist corrosion
2) the ratio of stress over strain
3) the maximum load over the cross sectional area
4) none of the above
ANSWER: 2 -- THE RATIO OF STRESS OVER STRAIN

Q-2:  The rest mass of an electron is closest to:

1) 10-15 kilograms
2) 10-17 kilograms
3) 10-30 kilograms
4) 10-50 kilograms
ANSWER: 3 -- 10-30 KILOGRAMS (accept 9.11 x 10-31kg)

Q-3: Carbon-14 dating is based on the decay of 14C to 14N. What type of radioactive decay is associated with this nuclear reaction?

ANSWER: b-RAY or b DECAY or ELECTRON EMISSION

Q-4:  Normal sunlight is non-polarized. Why are polarized sunglasses worn?

ANSWER: REFLECTED LIGHT FROM SMOOTH SURFACES IS POLARIZED

Q-5:  Many common household fluids, such as margarine, undergo a decrease in viscosity when subjected to a shearing force. What is this property called?

ANSWER: THIXOTROPIC (pron: thik-sa-trop-ick)

Q-6:  How much energy in consumed if a 100 watt light bulb is operated for 10 MINUTES?

ANSWER: 60,000 JOULES or 60kJ or 6X104J

Q-7:  If the energy reaching your eyeball at 10 meters from a small light bulb is expressed as x, express the energy which would reach your eyeball at 20 meters?

ANSWER: (1/4)x

Q-8:  How much current does a 1500 Watt heater draw if supplied with a 120 Volt source?

ANSWER: 12.5 AMPS

Q-9: The area of thermodynamics concerned with the measuring of thermal properties is called what?

ANSWER: CALORIMETRY

Q-10: The temperature and pressure at which a substance can exist in all three phases of matter simultaneously is called what?

ANSWER: TRIPLE POINT

Q-11:  Refracting telescopes, if uncorrected, suffer from chromatic aberration. Chromatic aberration occurs because:

1) red light is focused more strongly than blue light
2) blue light is focused more strongly than red light
3) the outer light rays are focused more strongly than the central rays,
4) the central light rays are focused more strongly than the outer rays.
ANSWER: 2 -- BLUE LIGHT IS FOCUSED MORE STRONGLY THAN RED LIGHT

Q-12:  Which of the following scientific instruments has the greatest resolving power?

1) electron microscope
2) light microscope
3) phase-contrast microscope
4) centrifuge
ANSWER: 1 -- ELECTRON MICROSCOPE

Q-13:  One curie is equal to:

1) the square root of the binding energy
2) the energy of an alpha-particle
3) 3.7 x 1010 disintegrations per second
4) mc2
ANSWER: 3 -- 3.7 x 1010 DISINTEGRATIONS PER SECOND

A twin goes on a high speed space journey (near the speed of light) and returns to meet his twin who stayed on earth. At their meeting the traveling twin has

Q-1: A twin goes on a high speed space journey (near the speed of light) and returns to meet his twin who stayed on earth. At their meeting the traveling twin has:

1) aged more than the earthbound twin
2) aged less than the earthbound twin
3) aged the same as the earthbound twin
ANSWER: 2 -- AGED LESS THAN THE EARTHBOUND TWIN

Q-2:  Which of the following forces is nonconservative?

1) gravitational force
2) electrostatic force
3) sliding frictional force
4) restorative force of a spring
ANSWER: 3 -- SLIDING FRICTIONAL FORCE

Q-3:  What is the potential energy of a 10 kilogram cube 500 meters above the ground?

ANSWER: 49,000 JOULES (accept 50,000 joules, uses g = 10m/s2)

Q-4:  A 2 kilogram mass accelerates at 5 meters per second squared for 3 seconds. What impulse has acted on the mass?

ANSWER: 30 NEWTON-SECONDS or 30 KILOGRAM-METERS PER SECOND

Q-5:  The driveshaft of a car rotates at 450 radians per second with a torque of 150 Newton-meters. How much power is produced?

ANSWER: 67,500 WATTS

Q-6: What is the initial velocity of an object if it is moving 10 meters per second after 2 seconds with a constant acceleration of 4 meters per second squared?

ANSWER: 2 METERS PER SECOND

Q-7:  If an object is in a state of equilibrium, what can be said about all of the forces acting on the object?

ANSWER: THE SUM OF ALL FORCES ACTING ON THE OBJECT IS ZERO

Q-8: The pressure placed on a square with 1/2 meter sides is 1000 Pascals. How much force is being applied to the square?

ANSWER: 250 NEWTONS

Q-9: What is the ratio of a substance's density to the density of water called?

ANSWER: SPECIFIC GRAVITY (also accept relative density)

Q-10:  Which of the following is NOT closely associated with anon-magnetic Phase Diagram?

1) Eutectic Temperature (pron: you-tek-tik)
2) Curie Point
3) Solidus
4) Liquidus Curves
ANSWER:2 -- CURIE POINT

Q-11:  A bimetallic strip commonly found in home furnace thermostats works because of the difference in this property of the two metals. Is it:

1) thermal shock
2) thermal conductivity
3) thermal expansion
4) thermal diffusivity
ANSWER: 3 -- THERMAL EXPANSION

Q-12:  Which of the following physical properties is TRUE of most dense ceramic materials?

1) high tensile strength
2) good ductility
3) high compressive strength
4) high electrical conductivity
ANSWER: 3 -- HIGH COMPRESSIVE STRENGTH

The anti-particle to an electron is:

Q-1;The anti-particle to an electron is:

1) proton
2) positron
3) neutron
4) anti-proton
ANSWER: 2 -- POSITRON

Q-2; The gravitational potential energy between two bodies is inversely proportional to:

1) the cube of the distance
2) the first power of the distance
3) the square of the distance
4) it has no relation to distance
ANSWER: 2 -- THE FIRST POWER OF THE DISTANCE

Q-3;An object is projected vertically upward near the surface of the earth. At the very top of its path, the object's velocity is zero, and its acceleration is:

1) 0
2) 9.8 meters per second squared DOWNWARD
3) 9.8 meters per second squared UPWARD
4) depends on the mass of the object
ANSWER:2 -- 9.8 METERS PER SECOND SQUARED DOWNWARD

Q-4; Of the following choices, approximately how many times greater is the mass of a proton than the mass of an electron?

1) 200
2) 2000
3) 20,000
4) 200,000
ANSWER: 2 -- 2000

Q-5;How many quarks make up a neutron?

ANSWER: 3

In order for fiber optics to work, the incident light inside the fiber must hit the wall of the fiber at:

Q-1; In order for fiber optics to work, the incident light inside the fiber must hit the wall of the fiber at:

1) 90 degrees
2) 45 degrees
3) an angle greater than the critical angle
4) none of the above
ANSWER: 3 -- AN ANGLE GREATER THAN THE CRITICAL ANGLE

Q-2; When light is traveling through a vacuum, what is the product of the light's wavelength and frequency equal to?

1) speed of light
2) Plank's constant
3) momentum
4) wave number
ANSWER: 1 -- SPEED OF LIGHT

Q-3;  The inverse of wavelength is referred to as:

1) wave number
2) frequency
3) velocity
4) momentum
ANSWER: 1 -- WAVE NUMBER

Q-4; The GeV is a unit of:

1) momentum
2) energy
3) velocity
4) time
ANSWER: 2 -- ENERGY

Q-5; In AC Circuit Theory, the term that replaces the resistance is:

1) inductance
2) capacitance
3) impedance
4) reactance
ANSWER: 3 -- IMPEDANCE

Isotopes of an element have different numbers of NEUTRONS

Q-1;  Isotopes of an element have different numbers of:

1) electrons
2) protons
3) neutrons
4) leptons
ANSWER: 3 -- NEUTRONS

Q-2; Which one of the following particles travels at the speed of light?

1) neutrons
2) electrons
3) photons
4) muons
ANSWER: 3 -- PHOTONS

Q-3;  Heat is transferred from the sun to the earth primarily by:

1) conduction
2) convection
3) radiation
4) condensation
ANSWER: 3 -- RADIATION

Q-4;  A block of wood initially at rest slides down an inclined plane. Neglecting friction, the kinetic energy of the block at the bottom of the plane is:

1) all converted into heat
2) equal to its potential energy (with respect to the bottom of the plane) when it was at
the top of the plane
3) less than its kinetic energy at the top of the plane
4) dependant on the materials of which the block is made
ANSWER: 2 -- EQUAL TO ITS POTENTIAL ENERGY (WITH RESPECT TO THE BOTTOM OF PLANE) WHEN IT WAS AT THE TOP OF THE PLANE.

Q-5; Short Answer: How much current does a 1500 Watt heater draw if supplied with a
120 Volt source?

ANSWER: 12.5 AMPS

Q-6;The area of thermodynamics concerned with the measuring of thermal properties is called what?

ANSWER: CALORIMETRY

Q-7;The temperature and pressure at which a substance can exist in all three phases of matter simultaneously is called what?

ANSWER: TRIPLE POINT

Q-8; Refracting telescopes, if uncorrected, suffer from chromatic aberration. Chromatic aberration occurs because:

1) red light is focused more strongly than blue light
2) blue light is focused more strongly than red light
3) the outer light rays are focused more strongly than the central rays,
4) the central light rays are focused more strongly than the outer rays.
ANSWER: 2 -- BLUE LIGHT IS FOCUSED MORE STRONGLY THAN RED LIGHT

Q-9;Which of the following scientific instruments has the greatest resolving power?

1) electron microscope
2) light microscope
3) phase-contrast microscope
4) centrifuge
ANSWER: 1 -- ELECTRON MICROSCOPE

Q-10; One curie is equal to:

1) the square root of the binding energy
2) the energy of an alpha-particle
3) 3.7 x 1010 disintegrations per second
4) mc2
ANSWER: 3 -- 3.7 x 1010 DISINTEGRATIONS PER SECOND 
 

If an object is in a state of equilibrium, what can be said about all of the forces acting on the object?

Q-1;  If an object is in a state of equilibrium, what can be said about all of the forces acting on the object?

ANSWER: THE SUM OF ALL FORCES ACTING ON THE OBJECT IS ZERO

Q-2; The pressure placed on a square with 1/2 meter sides is 1000 Pascals. How much force is being applied to the square?

ANSWER: 250 NEWTONS

Q-3; What is the ratio of a substance's density to the density of water called?

ANSWER: SPECIFIC GRAVITY (also accept relative density)

Q-4; Which of the following is NOT closely associated with a non-magnetic Phase Diagram?

1) Eutectic Temperature (pron: you-tek-tik)
2) Curie Point
3) Solidus
4) Liquidus Curves
ANSWER: 2-- CURIE POINT

Q-5;A bimetallic strip commonly found in home furnace thermostats works because of the difference in this property of the two metals. Is it:

1) thermal shock
2) thermal conductivity
3) thermal expansion
4) thermal diffusivity
ANSWER: Y -- THERMAL EXPANSION

Q-6; Which of the following physical properties is TRUE of most dense ceramic materials?

1) high tensile strength
2) good ductility
3) high compressive strength
4) high electrical conductivity
ANSWER: Y -- HIGH COMPRESSIVE STRENGTH

Q-7; The Modulus of Elasticity for a material refers to:

1) the ability of a material to resist corrosion
2) the ratio of stress over strain
3) the maximum load over the cross sectional area
4) none of the above
ANSWER: 2 -- THE RATIO OF STRESS OVER STRAIN

Q-8; The rest mass of an electron is closest to:

1) 10-15 kilograms
2) 10-17 kilograms
3) 10-30 kilograms
4) 10-50 kilograms
ANSWER: 3 -- 10-30 KILOGRAMS (accept 9.11 x 10-31kg)

Q-9; Carbon-14 dating is based on the decay of 14C to 14N. What type of radioactive decay is associated with this nuclear reaction?

ANSWER: b-RAY or b DECAY or ELECTRON EMISSION

Q-10; Normal sunlight is non-polarized. Why are polarized sunglasses worn?

ANSWER: REFLECTED LIGHT FROM SMOOTH SURFACES IS POLARIZED

Q-11; Many common household fluids, such as margarine, undergo a decrease in viscosity when subjected to a shearing force. What is this property called?

ANSWER: THIXOTROPIC (pron: thik-sa-trop-ick)

Q-12; How much energy in consumed if a 100 watt light bulb is operated for 10 MINUTES?

ANSWER: 60,000 JOULES or 60kJ or 6X104J

Q-13; If the energy reaching your eyeball at 10 meters from a small light bulb is expressed as x, express the energy which would reach your eyeball at 20 meters?

ANSWER: (1/4)x

A twin goes on a high speed space journey (near the speed of light) and returns to meet his twin who stayed on earth. At their meeting the traveling twin has:

Q-1;A twin goes on a high speed space journey (near the speed of light) and returns to meet his twin who stayed on earth. At their meeting the traveling twin has:

1) aged more than the earthbound twin
2) aged less than the earthbound twin
3) aged the same as the earthbound twin
ANSWER: 2 -- AGED LESS THAN THE EARTHBOUND TWIN

Q-2; Which of the following forces is nonconservative?

1) gravitational force
2) electrostatic force
3) sliding frictional force
4) restorative force of a spring
ANSWER: 3 -- SLIDING FRICTIONAL FORCE

Q-3; What is the potential energy of a 10 kilogram cube 500 meters above the ground?

ANSWER: 49,000 JOULES (accept 50,000 joules, uses g = 10m/s2)

Q-4; Short Answer: A 2 kilogram mass accelerates at 5 meters per second squared for 3
seconds. What impulse has acted on the mass?

ANSWER: 30 NEWTON-SECONDS or 30 KILOGRAM-METERS PER SECOND

Q-5; The driveshaft of a car rotates at 450 radians per second with a torque of 150 Newton-meters. How much power is produced?

ANSWER: 67,500 WATTS

Q-6;  What is the initial velocity of an object if it is moving 10 meters per second after 2 seconds with a constant acceleration of 4 meters per second squared?

ANSWER: 2 METERS PER SECOND

The anti-particle to an electron is POSITRON

Q-1; The anti-particle to an electron is:

1) proton
2) positron
3y) neutron
4 anti-proton
ANSWER: 2 -- POSITRON

Q-2; The gravitational potential energy between two bodies is inversely proportional to:

1) the cube of the distance
2) the first power of the distance
3) the square of the distance
4) it has no relation to distance
ANSWER: 2 -- THE FIRST POWER OF THE DISTANCE

Q-3; An object is projected vertically upward near the surface of the earth. At the very top of its path, the object's velocity is zero, and its acceleration is:

1) 0
2) 9.8 meters per second squared DOWNWARD
3) 9.8 meters per second squared UPWARD
4) depends on the mass of the object
ANSWER: 2 -- 9.8 METERS PER SECOND SQUARED DOWNWARD

Q-4; Of the following choices, approximately how many times greater is the mass of a proton than the mass of an electron?

1) 200
2) 2000
3) 20,000
4) 200,000
ANSWER: 2 -- 2000

Q-5; SHow many quarks make up a neutron?

ANSWER: 3

In order for fiber optics to work, the incident light inside the fiber must hit the wall of the fiber at

Q-1;  In order for fiber optics to work, the incident light inside the fiber must hit the wall of the fiber at:

1) 90 degrees
2) 45 degrees
3) an angle greater than the critical angle
4) none of the above
ANSWER: 3 -- AN ANGLE GREATER THAN THE CRITICAL ANGLE

Q-2:  When light is traveling through a vacuum, what is the product of the light's wavelength and frequency equal to?

1) speed of light
2) Plank's constant
3) momentum
4) wave number
ANSWER: 1 -- SPEED OF LIGHT

Q-3:  The inverse of wavelength is referred to as:

1) wave number
2) frequency
3) velocity
4) momentum
ANSWER: 1 -- WAVE NUMBER

Q-4:  The GeV is a unit of:

1) momentum
2) energy
3) velocity
4) time
ANSWER: 2 -- ENERGY

Q-5: In AC Circuit Theory, the term that replaces the resistance is:

1) inductance
2) capacitance
3) impedance
4) reactance
ANSWER: 3 -- IMPEDANCE

The four underlying equations in electromagnetic theory are called:

Q-1; The four underlying equations in electromagnetic theory are called:

1) Einstein's Equations
2) Maxwell's Equations
3) Newton's Equations
4) Faraday's Law
ANSWER: 2 -- MAXWELL'S EQUATIONS

Q-2;  The splitting of an atomic nucleus is called:

1) fission
2) fusion
3) cleavage
4) separation
ANSWER: 1 -- FISSION

Q-3;  In an electromagnetic wave, what is the relative orientation of the magnetic and electric fields?

1) 180 degrees
2) 90 degrees
3) 45 degrees
4) 22.5 degrees
ANSWER: 2 -- 90 DEGREES

Q-4;  In an electromagnetic wave, the E and B fields are both perpendicular to what?

ANSWER: THE DIRECTION OF THE WAVE or DIRECTION OF WAVE ROPAG

Q-5; : When light is reflected from a surface, the angle of incidence is:

1) 30 degrees
2) equal to the angle of reflection
3) 90 degrees
4) 180 degrees
ANSWER: 2 -- EQUAL TO THE ANGLE OF REFLECTION

Q-6;  According to standard convention, the angles of incidence and reflection for a plane surface are measured from:

1) the reflecting surface
2) lines at 45 degrees to the reflecting surface
3) a line at 90 degrees to the reflecting surface
4) there is no standard
ANSWER: 3 -- A LINE AT 90 DEGREES TO THE REFLECTING SURFACE

Q-7; A real image always appears:

1) larger than object
2) inverted
3) erect
4) same size as object
ANSWER: 2 -- INVERTED

Q-8;  When light enters an optically denser medium, the light ray:

1) bends away from a normal to surface
2) passes through unbent
3) bends towards a normal to surface
4) none of the above
ANSWER: 3 -- BENDS TOWARDS A NORMAL TO SURFACE

Q-9;  The speed of light in vacuum "C" divided by the Index of Refraction "N" gives the:

1) frequency of the light
2) speed of the light in the medium
3) energy of the light
4) wavelength of the light
ANSWER: 2 -- SPEED OF THE LIGHT IN THE MEDIUM

An alpha particle colliding with an electron loses:

Q-1:  An alpha particle colliding with an electron loses:

1) none of its energy
2) little of its energy
3) half of its energy
4) all of its energy
ANSWER: 2 -- LITTLE OF ITS ENERGY

Q-2:  The term "laminar flow" is most often associated with the description of:

1) conduction of sound by waves
2) current flow in transistors
3) effects of viscosity of liquids
4) passage of light rays through a liquid
ANSWER: 3 -- EFFECTS OF VISCOSITY OF LIQUIDS

Q-3:  Two point masses, M1 and M2, are 14 centimeters apart. M1 has a mass of 2 grams. M2 has a mass of 5 grams. Locate the center-of-mass of this system.

1) 4 cm from M1
2) 4 cm from M2
3) 5 cm from M2
4) 7 cm from M1
ANSWER: 2 -- 4 CM FROM M2

Q-4:  The mass, in kilograms, of an object whose weight on earth at sea level is 490 newtons is:

1) 50 kilograms
2) 100 kilograms
3) 225 kilograms
4) 1,100 kilograms
ANSWER: 1 -- 50 KILOGRAMS

Q-5:  When the velocity of an object is tripled, another quantity which is tripled at the same time is the object's:

1) momentum
2) potential energy
3) kinetic energy
4) mass
ANSWER: 1 -- MOMENTUM

Q-6:  What is the only non-metal element that is a liquid at room temperature and one atmosphere?

1) bromine
2) argon
3) silicon
4) selenium
ANSWER: 1 -- BROMINE

Q-7: Which of the following is NOT a noble gas?

1) radon
2) xenon (pron: zee-non)
3) astatine (pron: as-tah-teen)
4) krypton
ANSWER: 3 -- ASTATINE

Q-8:  What is the SI unit of pressure?

1) Pascal
2) Torr
3) Dyne
4) Kelvin
ANSWER: 1 -- PASCAL

A hollow METALLIC sphere has an inner radius A and an outer radius B. If charge is placed on the inner surface, that is at radius A, where is the charge located after it has come to rest?

Q-1: A hollow METALLIC sphere has an inner radius A and an outer radius B. If charge is placed on the inner surface, that is at radius A, where is the charge located after it has come to rest?

ANSWER: ON THE SPHERE'S OUTER SURFACE or OUTSIDE RADIUS B

Q-2:  Two parallel wires carrying currents in opposite directions will:

1) attract each other
2) repel each other
3) cause an electric arc to form
4) not affect each other
ANSWER: 2 -- REPEL EACH OTHER

Q-3:  In an electromagnetic wave, the ratio of the magnitudes of the electric field to the magnet field is equal to what?

ANSWER: THE SPEED OF LIGHT or C

Q-4:  Suppose the power of a prescription lens is 4 diopters. What is the focal length of the lens?

ANSWER: = 25 CENTIMETERS

Q-5:  Assuming all other parameters remain constant, what happens to the pressure of a gas when the volume of the gas is increased?

1) increases
2) decreases
3) fluctuates sinusoidally
4) remains the same
ANSWER: 2 -- DECREASES

Q-6:  If a metallic object is heated, its density generally:

1) increases
2) decreases
3) fluctuates randomly
4) remains the same
ANSWER: 2 -- DECREASES

Q-7:  Which wave has the highest frequency?

1) microwaves
2) infrared waves
3) ultraviolet waves
4) radio waves
ANSWER: 3 -- ULTRAVIOLET WAVES

Q-8:  The characteristic that distinguishes a laser beam from an ordinary light beam is:

1) the greater frequency of the laser beam
2) the coherence of the laser beam
3) the color of the laser beam
4) the greater polarization of the laser beam
ANSWER: 2 -- THE COHERENCE OF THE LASER BEAM

Q-9:  The mass spectrograph directly yields a value for which one of the following?

1) mass of a photon
2) mass of a neutron
3) masses of isotopes of elements
4) mass to charge ratio of ions
ANSWER: 4 -- MASS TO CHARGE RATIO OF IONS

Which of the following does NOT travel in a vacuum?

Q-1;  Which of the following does NOT travel in a vacuum?

1) radio waves
2) gamma rays
3) magnetic waves
4) sound waves
ANSWER: 4 -- SOUND WAVES

Q-2; What is the amplitude of a standing wave at its node?

ANSWER: 0

Q-3; An incident ray comes in parallel to the principle axis of a concave mirror. Is it reflected:

1) back along the incident ray
2) at 30 degrees to incident ray
3) through the focal point
4) through the center of curvature
ANSWER: 3 -- THROUGH THE FOCAL POINT

Q-4;For small oscillations, what happens to the period of a simple pendulum when the mass of the pendulum bob is doubled?

ANSWER: NOTHING or PERIOD IS UNAFFECTED

Q-5; Why must soldiers break cadence when crossing a bridge?

ANSWER: SO THEY DON'T EXCITE A VIBRATIONAL RESONANCE IN THE
BRIDGE.

Q-6; Who named the two kinds of electrical charges "positive" and "negative"?

ANSWER: BENJAMIN FRANKLIN

Q-7; What SI prefix is used to represent 10-18?

ANSWER: ATTO

Q-8;When a slingshot exerts a 10 Newton force on a rock, the rock accelerates at 50 meters per second squared. What force is required to accelerate the rock to 150 meters per second squared?

ANSWER: 30 NEWTONS

Q-9; How are work and power related?

ANSWER: POWER IS THE AMOUNT OF WORK PER UNIT TIME

Q-10;Heat transfer by mixing is more commonly known as what?

ANSWER: CONVECTION

Q-11;Sound waves are an example of what type of wave?

ANSWER: COMPRESSIONAL or LONGITUDINAL

Q-12;In physics, how is intensity defined?

ANSWER: POWER PER UNIT AREA

Q-13;What is the SI unit of inductance?

ANSWER: HENRY

Q-14; What is the SI unit of magnetic flux?

ANSWER: WEBER

Q-15; Who invented the electric battery?

ANSWER: (ALLESANDRO) VOLTA

Q-16; What is the resistance of an ideal voltmeter?

ANSWER: INFINITE RESISTANCE

Q-17;What is the resistance of an ideal ammeter?

ANSWER: ZERO

Energy is described as the capacity for:

Q-1;  Energy is described as the capacity for:

1) reactivity
2) combustion
3) transformation
4) doing work
ANSWER: 4 -- DOING WORK

Q-1; Kinetic energy is energy of:

1) position
2) radiation
3) motion
4) formation
ANSWER: 3 -- MOTION

Q-1; The kinetic energy of a stone falling near the earth's surface through a vacuum increases with the:

1) square root of its velocity
2) cube root of its velocity
3) square of its velocity
4) cube of its velocity
ANSWER: 3 -- SQUARE OF ITS VELOCITY

Q-1;What is the mass of a 60 kilogram astronaut in space, far from any planets?

ANSWER: 60 KILOGRAMS

Q-1; What is the weight of a 150 pound astronaut in space, far from any planets?

ANSWER: 0 POUNDS

Q-1;In what type of reference frame does Newton's law NOT hold true?

ANSWER: NONINERTIAL FRAMES

The gravitational potential energy of an object close to the ground varies:

Q-1;  The gravitational potential energy of an object close to the ground varies:

1) inversely as its distance from the ground

2) directly as its distance from the ground

3) inversely as the square of its distance from the ground

4) directly as the square of its distance from the ground

ANSWER: X -- DIRECTLY AS ITS DISTANCE FROM THE GROUND

Q-2;  When the image formed by a convex mirror is compared to its object, the image is usually:

1) erect and smaller

2) inverted and imaginary

3) real and inverted

4) real and erect

ANSWER: 1 -- ERECT AND SMALLER

Q-3;  In optics, when the vibrations of light are limited to a single two dimensional plane, it is said that light has been what?

ANSWER: POLARIZED

Q-4;  One nanometer is equal to:

1) 10-12 meters

2) 10-11 meters

3) 10-3 meters

4) 10-9 meters

ANSWER: 4 -- 10-9 METERS

Q-5;  In radioactive decay, the emission of an electron is characteristic of:

1) Alpha decay

2) Beta decay

3) Gamma decay

4) X-rays

ANSWER: X -- BETA DECAY

The gravitational potential energy of an object close to the ground varies:

Q-1; The gravitational potential energy of an object close to the ground varies:

1) inversely as its distance from the ground
2) directly as its distance from the ground
3) inversely as the square of its distance from the ground
4) directly as the square of its distance from the ground
ANSWER: 2 -- DIRECTLY AS ITS DISTANCE FROM THE GROUND

Q-2;When the image formed by a convex mirror is compared to its object, the image is usually:

1) erect and smaller
2) inverted and imaginary
3) real and inverted
4) real and erect
ANSWER: 1 -- ERECT AND SMALLER

Q-3; In optics, when the vibrations of light are limited to a single two dimensional plane, it is said that light has been what?

ANSWER: POLARIZED

Q-4; One nanometer is equal to:

1) 10-12 meters
2) 10-11 meters
3) 10-3 meters
4) 10-9 meters
ANSWER: 4 -- 10-9 METERS

Q-5; In radioactive decay, the emission of an electron is characteristic of:

1) Alpha decay
2) Beta decay
3) Gamma decay
4) X-rays
ANSWER: 2 -- BETA DECAY

The neutrons in an atom:

Q-1;  The neutrons in an atom:

1) are part of the nuclear charge
2) rotate about the nucleus in elliptical orbits
3) vary in number with different isotopes
4) are always equal in number to the total number of protons
ANSWER: 3 -- VARY IN NUMBER WITH DIFFERENT ISOTOPES

Q-2;  Which of the following phenomena suggest that light may be a transverse wave?

1) reflection
2) polarization
3) photoelectric effect
4) diffraction
ANSWER: 2 -- POLARIZATION

Q-3; In simple harmonic motion, the acceleration is:

1) constant
2) proportional to the distance from the central position
3) greatest when the velocity is greatest
4) none of the above
ANSWER: 2 -- PROPORTIONAL TO THE DISTANCE FROM THE CENTRAL
POSITION

Q-4;  When a liquid moves through a pipe having a varying diameter, the pressure against the inside walls of the pipe will be:

1) the same throughout
2) lowest where the diameter is smallest
3) lowest where the diameter is largest
4) lowest where the velocity of flow is lowest
ANSWER: 2 -- LOWEST WHERE THE DIAMETER IS SMALLEST

Which of the following statements dealing with simple harmonic motion of a mass-spring system is TRUE?

Q-1;  Which of the following statements dealing with simple harmonic motion of a mass-spring system is TRUE?

1) The acceleration is largest when the oscillating mass is instantaneously at rest.
2) The larger the spring force constant the larger the period.
3) The period of the motion depends linearly on the amplitude of the motion.
4) The acceleration is larger when the oscillating mass has its greatest velocity.
ANSWER: 1 -- THE ACCELERATION IS LARGEST WHEN THE OSCILLATING
MASS IS INSTANTANEOUSLY AT REST

Q-1; An ice skater is rotating with her arms extended. When she pulls in her arms her rate of rotation increases. Which of the following statements dealing with the process is TRUE?

1) Her moment of inertia is increased.
2) Kinetic energy is conserved.
3) The skater does work when pulling in her arms.
4) Angular momentum is increased.
ANSWER: 3 -- THE SKATER DOES WORK WHEN PULLING IN HER ARMS

Q-1; If viewed on an oscilloscope, the loudness of a sound wave would be associated with the wave's:

1) frequency
2) wavelength
3) velocity
4) amplitude
ANSWER: 4 -- AMPLITUDE

Q-1; If a sled has a constant acceleration of 2 meters per second squared and starts from rest, the distance in meters that it will have covered after 5 seconds is:

1) 10 meters
2) 20 meters
3) 25 meters
4) 50 meters
ANSWER: 3 -- 25 METERS