Which of the following sets of 3 forces CANNOT have a vector sum of zero?

Q-1; Which of the following sets of 3 forces CANNOT have a vector sum of zero?

1) 10, 10 and 10 Newtons
2) 10, 10 and 20 Newtons
3) 10, 20 and 20 Newtons
4) 10, 20 and 40 Newtons
ANSWER: 4 -- 10, 20 AND 40 NEWTONS

Q-1; A small cluster of stars appear, after many decades of observation, to be converging toward a common point in the sky. Does the light from these stars show a:

1) red Doppler shift
2) blue Doppler shift
3) no Doppler shift
ANSWER: 1 -- RED DOPPLER SHIFT

Q-1; What name is given to those elementary particles for which there is a symmetry under intrapair production. Included are photons, pi mesons, and nuclei with an even number of particles.

ANSWER: BOSONS

Q-1;When a fast charged particle traverses a dielectric medium at a velocity exceeding the velocity of light in that medium, radiation is emitted. This radiation is known as:

1) point radiation
2) Cerenkov radiation
3) Synchrotron radiation
4 Bremsstrahlung
ANSWER: 2 -- CERENKOV RADIATION

What law describes the force between two stationary electrically charged objects?

Q-1; What law describes the force between two stationary electrically charged objects?

1) Ampere's law
2) Coulomb's law
3) Kirchoff's Rules (pron: kir-koff rules)
4) Ohm's law
ANSWER: 2 -- COULOMB'S LAW

Q-2; A circuit has a resistance of 200 ohms. The resistance of the circuit can be reduced to 120 ohms by adding which of the following to the circuit.

1) 80 ohm resistor in series
2) 150 ohm resistor in parallel
3) 240 ohm resistor in series
4) 300 ohm resistor in parallel
ANSWER: 4 -- 300 OHM RESISTOR IN PARALLEL

Q-3;  A spring with a force constant k is cut into thirds. The force constant of each of the new springs is

1) k
2) 3k
3) (1/3)k (read: one third k)
4) 9k
ANSWER: 2 -- 3k

Q-4;  When a 2 kilogram mass is suspended from a spring, the spring stretches 4 cm. The force constant of the spring is approximately:+

1) .5 newtons per meter
2) 5 newtons per meter
3) 50 newtons per meter
4) 500 newtons per meter
ANSWER: 4 -- 500 NEWTONS PER METER

Q-5;  If a three farad capacitor and a six farad capacitor are connected in parallel, what is their equivalent capacitance?

ANSWER: 9 FARADS

Q-1;  The gravitational constant for the universe was measured by which of the following?

1) Kepler
2) Einstein
3) Newton
4) Cavendish
ANSWER: 4 -- CAVENDISH

Q-2;If you start with 24 grams of a radioactive element with a half-life of one month, how many grams of the radioactive element will be left after 2 months?

1) 1.5 grams
2) 3 grams
3) 6 grams
4) 12 grams
ANSWER: 3 -- 6 GRAMS

Q-2; How many colors of quarks are believed to exist? Is it:

1) 1
2) 3
3) 5
4) 7
ANSWER: 2 -- 3

Q-3; A train is traveling 20 kilometers per hour. It is .5 kilometers behind you. You want to beat the train to a crossing that is .5 kilometers away. How fast must you run?

ANSWER: 10 KILOMETERS PER HOUR

Q-4; A child weighing 50 Newtons is on a swing. He goes from a minimum height of 0.2 meters to a maximum height of 1.5 meters. His maximum speed is closest to:

1) 3 meters per second
2) 5 meters per second
3) 7 meters per second
4) 9 meters per second
ANSWER: 2 -- 5 METERS PER SECOND

Q-5; A train locomotive whose mass is 1 x 106 kilograms is traveling EAST at a speed of 100 kilometers per hour. A NORTHERLY wind is applying a force of 100 Newtons on the locomotive. How much work is the wind doing on the locomotive for each 10 meters it travels?

1) 0 joules
2) 1,000 joules
3) 10,000 joules
4) 100,000 joules
ANSWER: 1 -- 0 JOULES

Q-6; The density of seawater is greater than that of fresh water. A boat will float:

1) Higher in fresh water than in seawater
2) Lower in fresh water than in seawater
3) At the same level in both
4) Any of the above, depending upon its shape
ANSWER: 2 -- LOWER IN FRESH WATER THAN IN SEAWATER

Q-7; How many times more intense is an 80 decibel sound than a 40 decibel sound?

1) 2
2) 40
3) 1000
4) 10,000
ANSWER: 4 -- 10,000

Q-8; The coefficient of linear expansion of steel is 1.2 x 10-5/ oC. (read: 1 point 2 times 10 to the minus 5 per degree Celsius). What is the increase in length of a steel girder that is 20 meters long at 10o C when its temperature is raised to 20o C?

ANSWER: 2.4 MILLIMETERS (accept 0.0024 meters or 2.4 x 10-3 meters) 

One of the following is a device that detects charged particles but does NOT show their tracks. Is this device the:

Q-1;  One of the following is a device that detects charged particles but does NOT show their tracks. Is this device the:

1) spark chamber
2) photographic plate
3) scintillation counter
4) bubble chamber
ANSWER: 3 -- SCINTILLATION COUNTER

Q-2; The photomultiplier tube in the scintillation counter multiplies one of the following. Does it multiply:

1) scintillations
2) electrons
3) ions
4) photons
ANSWER: 2 -- ELECTRONS

Q-3;The emission of a positron from a radioactive atom is generally accompanied by the emission of one of the following. Is it accompanied by the emission of:

1) a meson
2) a baryon
3) an antineutrino
4) a neutrino
ANSWER: 4 -- A NEUTRINO

Q-4; What term refers to the heat needed to change a unit mass of a substance at its melting temperature from a solid into a liquid?
ANSWER: HEAT OF FUSION or LATENT HEAT OF FUSION or ENTHALPY
OF FUSION

A beam of white light is passed through a diffraction grating and the resulting spectrum is allowed to fall on a screen. Which one of the following is the color of light that undergoes the greatest deviation from its original direction. Is it:

Q-; A beam of white light is passed through a diffraction grating and the resulting spectrum is allowed to fall on a screen. Which one of the following is the color of light that undergoes the greatest deviation from its original direction. Is it:

1) red
2) yellow
3) blue
4) violet
ANSWER: 1 -- RED

Q-2; Which of the following are the parts of a DC generator that convert the AC in the armature to DC in the external circuit. Are these parts the:

1) field poles
2) slip rings and the brushes
3) commutator and the brushes
4) armature and the core
ANSWER: 3 -- COMMUTATOR AND THE BRUSHES

Q-3; : A P-type semiconductor is doped to produce one of the following. Will it produce:

1) both holes and electrons
2) positive electrons
3) negative electrons
4) holes
ANSWER: 4 -- HOLES

Q-4; When an atomic nucleus emits a beta particle, one of its neutrons disintegrates into one of the following set of particles. Does it disintegrate into:

1) a positron and an electron
2) a proton, an electron, and an antineutrino
3) a proton, an electron, and a positron
4) a neutrino and an antineutrino
ANSWER: 2 -- A PROTON, AN ELECTRON AND AN ANTINEUTRINO

The ENERGY associated with a photon depends upon the photon's:

Q-1;  The ENERGY associated with a photon depends upon the photon's:

1) velocity
2) frequency
3) amplitude
4) the brightness of the source from which it comes
ANSWER: 2 -- FREQUENCY

Q-2; When a beam of ordinary white light is passed through a Polaroid plate filter, the intensity of the beam that emerges is:

1) equal to that of the incident beam
2) about 0.9 that of the incident beam
3) about one-half that of the incident beam
4) practically zero
ANSWER: 3 -- ABOUT ONE-HALF THAT OF THE INCIDENT BEAM

Q-3;  Arrange the following group of colored lights in the order of INCREASING wavelength:
RED, ORANGE, GREEN, BLUE

ANSWER: BLUE, GREEN, ORANGE, RED

Q-4;  A thin double-concave lens produces images which are:

1) larger than the object
2) smaller than the object
3) the same size as the object
4) one cannot tell from this information
ANSWER: 2 -- SMALLER THAN THE OBJECT

Q-5;  When white light is passed through a double slit which of the following statements is TRUE:

1) Each of the bright bands is dispersed into a spectrum
2) Only the central band is dispersed into a spectrum
3) All the bright bands except the central one are dispersed into a spectrum
4) Each band has a single color different from its neighboring bands
ANSWER: 3 -- ALL THE BRIGHT BANDS EXCEPT THE CENTRAL ONE ARE
DISPERSED INTO THE SPECTRUM

10 kilogram ball falls from a height of 5 meters and rebounds from the floor to a height of 3 meters. The energy lost by the ball is:

Q-1; A 10 kilogram ball falls from a height of 5 meters and rebounds from the floor to a height of 3 meters. The energy lost by the ball is:

1) 20 joules
2) 98 joules
3) 196 joules
4) 294 joules
ANSWER: 3 -- 196 JOULES

Q-2; What is the Celsius temperature corresponding to 100 degrees Kelvin?

ANSWER: -173 DEGREES CELSIUS

Q-3; A rise in temperature of 20 Kelvin degrees is equal to a rise of:

1) 20 degrees Celsius
2) 36 degrees Celsius
3) 68 degrees Celsius
4) 293 degrees Celsius
ANSWER: 1 -- 20 DEGREES CELSIUS

Q-4; A kilocalorie is equal to one of the following. Is it equal to:

1) 4.2 Joules
2) 1000 Joules
3) 4200 Joules
4) 10,000 Joules
ANSWER: 3 -- 4200 JOULES

Q-5;An increase in the motion of the molecules of a gas confined in a steel tank will be observed in one of the following ways. Will it be observed as an increase in:

1) the temperature of the gas only
2) the pressure of the gas only
3) both the temperature and pressure of the gas
4) the temperature of the gas and a decrease in its pressure
ANSWER: Y -- BOTH THE TEMPERATURE AND PRESSURE OF THE GAS

Q-6; Under which of the following conditions does the behavior of a real gas resemble that of an ideal gas? Is it:

1) under all conditions of temperature and pressure
2) only at very high pressure
3) only when the gas is near condensation
3) only at low densities when the molecules are relatively far apart
ANSWER: 4 -- ONLY AT LOW DENSITIES WHEN THE MOLECULES ARE
RELATIVELY FAR APART

Q-7; Two waves of equal wavelength will interfere destructively most effectively under one of the following conditions. Will the interference be most effective when the waves are:

1) in phase and have equal amplitudes
2) in phase and have unequal amplitudes
3) 180 degrees out of phase and have equal amplitudes
4) 180 degress out of phase and have unequal amplitudes
ANSWER: Y -- 180 DEGREES OUT OF PHASE AND HAVE EQUAL AMPLITUDES

Q-8; As the temperature of the air increases from 0 degrees C to 20 degrees C, the wavelength of a sound made by a tuning fork of fixed frequency does which of the following? Does the wavelength

1) increase
2) decrease
3) remain the same
4) increase up to a maximum, then remain constant
ANSWER: 1 -- INCREASE

Two bodies of equal mass are moving in circular paths at equal speed.The first body moves in a circle whose radius is twice as great as that of the second. The ratio of the centripetal or radial acceleration of the first body to that of the second is:

Q.1;  Two bodies of equal mass are moving in circular paths at equal speed.The first body moves in a circle whose radius is twice as great as that of the second. The ratio of the centripetal or radial acceleration of the first body to that of the second is:

1) 1 to 4
2) 1 to 3
3) 1 to 2
4) 1 to 1
ANSWER: 3 -- 1 TO 2

Q.2; A force applied to a rocket gives it an upward acceleration equal to 2 times the acceleration of gravity. The magnitude of the force is equal to:

1) the weight of the rocket
2) twice the weight of the rocket
3) three times the weight of the rocket
4) four times the weight of the rocket
ANSWER: 3 -- THREE TIMES THE WEIGHT OF THE ROCKET

Q.3; A satellite is observed to move in a circle about the earth at a constant speed. This means that the force acting upon it is:

1) zero
2) parallel to the direction of the satellite's instantaneous velocity
3) perpendicular to the direction of the satellite's instantaneous velocity
4) none of the above
ANSWER: 3 -- PERPENDICULAR TO THE INSTANTANEOUS DIRECTION OF
THE SATTELITE’S VELOCITY

Q.4; When a person stands on a scale in an elevator at rest, the scale reads 800 newtons. When the elevator is allowed to fall freely with acceleration of gravity, the scale reads one of the following. Does the scale read:

1) 1600 newtons
2) 800 newtons
3) 400 newtons
4) 0 newtons
ANSWER: 4 -- 0 NEWTONS

Q.5; A 10,000-watt motor operates an elevator weighing 5000 newtons.
Assuming no frictional losses, how high is the elevator raised in 10 seconds. Is it raised:

1) 2 meters
2) 20 meters
3) 50 meters
4) 100 meters
ANSWER: 2 -- 20 METERS

Q.6; A machine's output is 4000 joules and its frictional losses are 1000 joules. Which of the following is its efficiency? Is it:

1) 25%
2) 30%
3) 75%
4) 80%
ANSWER: 4 -- 80%

Q.7; A machine having an efficiency of 50% does 500 joules of work. Which of the following is the work input? Is it:

1) 500 joules
2) 250 joules
3) 1000 joules
4) 2500 joules
ANSWER: 3 -- 1000 JOULES

Q.8;: The relationship between kinetic energy and the potential energy of a swinging pendulum bob is one of the following. Is it:

1) kinetic energy is greater than potential energy
2) kinetic energy is less than potential energy
3) kinetic energy is equal to potential energy
4) kinetic energy plus potential energy equals a constant
ANSWER: 4 -- KINETIC ENERGY PLUS POTENTIAL ENERGY EQUALS A
CONSTANT

According to the second law of thermodynamics, energy tends to become more and more unavailable for conversion from:

Q-1; Units commonly used for entropy are:

1) kilograms per degree Kelvin

2) Joules per degree Kelvin

3) Newtons per Coulomb

4) ergs

ANSWER: 2 -- JOULES PER DEGREE KELVIN

Q-2;  The amount of heat required to change a boiling liquid to a gas at the same temperature depends on one of the following properties of the liquid. Does it depend on

the liquid's:

1) heat of fusion

2) heat of vaporization

3) temperature

4) density

ANSWER: 2 -- HEAT OF VAPORIZATION

Q-3;  According to the second law of thermodynamics, energy tends to become more and more unavailable for conversion from:

1) thermal to kinetic energy
2) kinetic to thermal energy
3) thermal to mechanical energy
4) mechanical to thermal energy
ANSWER: 3 -- THERMAL TO MECHANICAL ENERGY

Q-4;  When a charge moves through an electric circuit in the direction of an electric force it does one of the following four things. Does it:

1) lose potential energy and gain kinetic energy

2) gain potential energy and lose kinetic energy

3) lose both potential and kinetic energy

4) gain both potential and kinetic energy

ANSWER: 1 -- LOSE POTENTIAL ENERGY AND GAIN KINETIC ENERGY

Q5Which one of the following is the name of a device used to measure ltage without drawing ANY current from the circuit being measured? Is it:

1) a wattmeter
2) a galvanometer
3) an ammeter
4) a potentiometer
ANSWER: 4 -- A POTENTIOMETER

Q-6;  Lenz's law is an example of the law of conservation of one of the following. Is it conservation of:

1) mass
2) charge
3) momentum
4) energy
ANSWER: 4 -- ENERGY

Q-7;  After a projectile is fired horizontally near the earth's surface, the horizontal component of its velocity, neglecting any air resistance:

1) increases steadily
2) decreases steadily
3) first decreases, then increases
4) remains constant
ANSWER: 4 -- REMAINS CONSTANT

Q-8;  Two bodies are moving in circular paths of equal radii. If the speed of the first body is twice that of the second, the centripetal acceleration of the first body is how many times greater than that of the second body?
ANSWER: 4

The first law of thermodynamics is concerned with the conservation of

Q-1;  A car is moving along a straight horizontal road at a speed of 20 meters per second. The brakes are applied and a constant force of 5000 Newtons decelerates the car to a stop in 10 seconds. The mass of the car is:

1) 1250 kilograms

2) 2500 kilograms

3) 5000 kilograms

4) 10,000 kilograms

ANSWER: 2 -- 2500 KILOGRAMS

Q-2;  A girl throws a 0.1 kilogram ball at a wall. The ball hits the wall perpendicularly with a velocity of 5 meters per second and then bounces straight back with a velocity of 4 meters per second. The change in the momentum of the ball is:

1) 0.1 kilogram-meters per second

2) 0.4 kilogram-meters per second

3) 0.5 kilogram-meters per second

4) 0.9 kilogram-meters per second

ANSWER: 4 -- 0.9 KILOGRAM-METERS PER SECOND

Q-3;  A satellite of mass "M" is in orbit around the earth. If a second satellite of mass "2M" is to be placed in the same orbit, the second satellite must have a velocity

which is:

1) half the velocity of the first satellite

2) the same as the velocity of the first satellite

3) twice the velocity of the first satellite

4) four times the velocity of the first satellite

ANSWER: 2 -- THE SAME AS THE VELOCITY OF THE FIRST SATELLITE

Q-4;  Which of the answers listed below best completes the statement:

The rate at which any part of a wave travels from one place to another determines the wave's:

1) propagation velocity

2) period

3) amplitude

4) frequency

ANSWER: 1 -- PROPAGATION VELOCITY

Q-5;  A spring with a force constant of 100 Newtons per meter is loaded with a mass of 1.0 kilogram. The period of vibration of this system is:

1) .03 seconds

2) .06 seconds

3) .31 seconds

4) .63 seconds

ANSWER: 4 -- .63 SECONDS

Q-5; : The first instrument used for measuring temperature was the gas thermoscope invented by:

1) Galileo

2) Centigrade

3) Fahrenheit

ANSWER: 2 -- GALILEO

Q-6;  The first law of thermodynamics is concerned with the conservation of

1) energy

2) momentum

3) charge

4) matter

ANSWER: 1 -- ENERGY

Q-7; Which of the following best completes the statement: The calorie is the amount of heat needed to raise:

1) 1 gram of water 1 degree Celsius

2) 1 gram of water 1 degree Rankin

3) 1 kilogram of water 1 degree Celsius

4) 1 kilogram of water 1 degree Kelvin

ANSWER: 1 -- 1 GRAM OF WATER 1 DEGREE CELSIUS

Alpha particles are nuclei of:

Q-1; The half-life of an isotope of an element is 5 days. The mass of a 10 gram sample of this isotope remaining after 20 days is:

1) 0.312 grams

2) 0.625 grams

3) 1.25 grams

4) 2.50 grams

ANSWER: 2 -- 0.625 GRAMS

Q-2; The idea that electrons revolved in orbits around the nucleus of an atom without radiating energy away from the atom was postulated by:

1) Thompson

2) Bohr

3) Rutherford

4) Einstein

ANSWER: 2 -- BOHR

Q-3;  Alpha particles are nuclei of:

1) hydrogen

2) helium

3) oxygen

4) nitrogen

ANSWER: 2 -- HELIUM

Q-4; A ball falling vertically from rest for 3 seconds travels very nearly:

1) 14.7 meters

2) 29.4 meters

3) 44.1 meters

4) 88.2 meters

ANSWER: 3 -- 44.1 METERS

The Millikan experiment showed that electric charge was:

Q-1;  The Millikan experiment showed that electric charge was:

1) negative
2) quantized
3) positive
4) unmeasurable
ANSWER: 1 -- QUANTIZED

Q-2;  When a metal becomes a superconductor, there is a tremendous decrease in its:

1) total volume
2) electrical resistance
3) length
4) density
ANSWER: 2 -- ELECTRICAL RESISTANCE

Q-3;  An x-ray photon collides with a free electron, and the photon is scattered. During this collision there is conservation of:

1) momentum but not energy
2) neither momentum nor energy
3) energy but not momentum
4) both momentum and energy
ANSWER: 4 -- BOTH MOMENTUM AND ENERGY

Q-4;  In the sun, helium is produced from hydrogen by:

1) radioactive decay
2) disintegration
3) fission
4) fusion
ANSWER: Z -- FUSION

A 10 volt battery connected to a capacitor delivers a charge of 0.5 coulombs. The capacitance of the capacitor is:

Q-1;  A 10 volt battery connected to a capacitor delivers a charge of 0.5 coulombs. The capacitance of the capacitor is:

1) 2 x 10-2 farads
2) 5 x 10-2 farads
3) 2 farads
4) 5 farads
ANSWER: X -- 5 x 10-2 FARADS

Q-2; Two light rays will interfere constructively with maximum amplitude if the path difference between them is:

1) one wavelength
2) one-half wavelength
3) one-quarter wavelength
4) one-eighth wavelength
ANSWER: 1 -- ONE WAVELENGTH

Q-3;Light is normally incident on a thin soap film and is reflected. If the wavelength of this light is "L" and the index of refraction of the soap film is "N", complete destructive interference will occur for a film thickness of:

1) L / 8N
2) L / 4N
3) L / 2N
4) 3L / 4N
ANSWER: 3 -- L / 2N

Q-1; The Michelson interferometer was designed to study the nature of:

1) water waves
2) sound waves
3) an "ether"
4) sunlight
ANSWER: 3 -- AN "ETHER

An electroscope charged WITHOUT contacting a charged body is charged by:

Q-1;  An electroscope charged WITHOUT contacting a charged body is charged by:

1) induction
2) conduction
3) convection
4) insulation
ANSWER: 1 -- INDUCTION

Q-2;  The potential drop between the terminals of a battery is equal to the battery's EMF when:

1) no current is drawn from the battery
2) a very large current is drawn from the battery
3) the internal resistance of the battery is very large
4) the resistance in the external circuit is small
ANSWER: 1 -- NO CURRENT IS DRAWN FROM THE BATTERY

Q-3;  To convert a galvanometer to a voltmeter, you should add a:

1) high resistance in series
2) high resistance in parallel
3) low resistance in series
4) low resistance in parallel
ANSWER: W -- HIGH RESISTANCE IN SERIES

Q-4;  The greatest induced EMF will occur in a straight wire moving at constant speed through a uniform magnetic field when the angle between the direction of the wire's motion and the direction of the magnetic field is

1) 0 degrees
2) 30 degrees
3) 60 degrees
4) 90 degrees
ANSWER: Z -- 90 DEGREES

As a pendulum is raised to higher altitudes, its period:

Q-1;  As a longitudinal wave moves through a medium, the particles of the medium:

1) vibrate in a path parallel to the path of the wave
2) vibrate in a path perpendicular to the path of the wave
3) follow the wave along its entire path
4) do not move
ANSWER: 1 -- VIBRATE IN A PATH PARALLEL TO THE PATH OF THE WAVE

Q-2;  As a pendulum is raised to higher altitudes, its period:

1) increases
2) decreases
3) remains the same
4 decreases, then remains the same
ANSWER: 1 -- INCREASES

Q-3; Two vibrating particles that are "out of phase" differ in the phase of their vibration by:

1) 1/4 cycle
2) 1/2 cycle
3) 3/4 cycle
4) 1 cycle
ANSWER: 2 -- 1/2 CYCLE

Q-1; The SI unit of pressure is the:

1) Torr
2) dyne per centimeter squared
3) atmosphere
4) pascal
ANSWER: 4 -- PASCAL

The value of G, the universal gravitational constant, was measured experimentally by:

Q-1; The value of G, the universal gravitational constant, was measured experimentally by:

1) Newton
2) Cavendish
3) Copernicus
4) Kepler
ANSWER: 2 -- CAVENDISH

Q-2; Two steel balls are at a distance S from one another. As the mass of ONE of the balls is doubled, the gravitational force of attraction between them is:

1) quartered
2) halved
3) doubled
4) quadrupled
ANSWER: Y -- DOUBLED

Q-3; If the distance between the earth and moon were halved, the force of the attraction between them ould be:

1) one fourth as great
2) one half as great
3) twice as great
4) four times as great
ANSWER: 4 -- FOUR TIMES AS GREAT

Q-4;  As a 10 kilogram mass on the end of a spring passes through its equilibrium position, the kinetic energy of the mass is 20 joules. The speed of the mass is:

1) 2.0 meters per second
2) 4.0 meters per second
3 5.0 meters per second
4) 6.3 meters per second
ANSWER: 2 -- 2.0 METERS PER SECOND

.A 10 kilogram mass rests on a horizontal frictionless surface. A horizontal force of 5 Newtons is applied to the mass. After the force has been applied for 1 second, the velocity of the mass is

Q1.A 10 kilogram mass rests on a horizontal frictionless surface. A
horizontal force of 5 Newtons is applied to the mass. After the force has been applied for 1
second, the velocity of the mass is:

1) 0 meters per second
2) 0.5 meters per second
3) 5 meters per second
4) 50 meters per second
ANSWER: 2 -- 0.5 METERS PER SECOND

Q2; Multiple Choice: A worker lifts a 10 kilogram block a vertical height of 2 meters. The
work he does on the block is:

1) 5 Joules
2) 20 Joules
3) 49 Joules
4) 200 Joules
ANSWER: 4 -- 200 JOULES

Q3; Multiple Choice: An impulse of 10 kilogram-meter per second acting on an object
whose mass is 5 kilogram will cause a change in the objects velocity of:

1) 0.5 meters per second
2) 2 meters per second
3) 10 meters per second
4) 50 meters per second

ANSWER: 2 -- 2 METERS PER SECOND
Q5; Multiple Choice: The time needed for a net force of 10 newtons to change the velocity
of a 5 kilograms mass by 3 meters/second is:

1) 1.5 seconds
2) 6 seconds
3) 16.7 seconds
4) 150 seconds
ANSWER: 1 -- 1.5 SECONDS

For a negative point charge, the electric field vectors

Q-1; Multiple Choice: For a negative point charge, the electric field vectors:
w) circle the charge
x) point radially in toward the charge
y) point radially away from the charge
z) cross at infinity
ANSWER: X -- POINT RADIALLY IN TOWARD THE CHARGE

Q-2; Multiple Choice: For an infinite sheet of positive charge, the electric field lines:
w) run parallel to the sheet of charge
x) are perpendicular to the sheet of charge and point in toward the sheet
y) are perpendicular to the sheet of charge and point away from the sheet
z) fall off as one over r squared
ANSWER: Y -- ARE PERPENDICULAR TO THE SHEET OF CHARGE AND POINT AWAY

Q-2; Multiple Choice: Five coulombs of charge are placed on a thin-walled conducting
shell. Once the charge has come to rest, the electric potential inside the hollow conducting shell is
found to be:
w) zero
x) uniform inside the sphere and equal to the electric potential on the surface of the sphere
y) smaller than the electric potential outside the sphere
z) varying as one over r squared.
ANSWER: X -- UNIFORM INSIDE THE SPHERE AND EQUAL TO THE ELECTRIC OTENT

Q-3; Short Answer: A two farad and a four farad capacitor are connected in series. What
single capacitance is "equivalent" to this combination?
ANSWER: 4/3 FARADS

The force acting between two point charges can be computed using which of the following laws?

Q-1; Multiple Choice: The force acting between two point charges can be computed using which of the following laws?
w) Ohm's Law
x) Ampere's Law
y) Coulomb's Law

z) Newton's Second Law.
ANSWER: Y -- COULOMB'S LAW
.
Q-2; Short Answer: Five volts are applied across the plates of a parallel plate capacitor.
The distance of separation of the plates is .02 meters. What is the magnitude of the electric field
inside the capacitor?
ANSWER: 250 VOLTS PER METER or 250 NEWTONS PER COULOMB

Q-3; Short Answer: Used normally, a 150-watt, 120 volt light bulb requires how many
amps of current?
ANSWER: 1.25 AMPS

Q-4; Short Answer: If 10 joules of energy are required to move 5 coulombs of charge
between two points, the potential difference between the two points is equal to how many volts?
ANSWER: 2 VOLTS

Q-5; Multiple Choice: Induced electric currents can be explained using which of the
following laws?
w) Gauss's Law
x) Faraday's Law
y) Ohm's Law
z) Ampere's Law
ANSWER: X -- FARADAY'S LAW

What is the name of the first American physicist to win two Nobel prizes?

Q-1; : What is the name of the first American physicist to win two Nobel prizes?
ANSWER: (JOHN) BARDEEN

Q-2; Multiple Choice: Which of the following scientists is responsible for the exclusion
principle which states that two objects may NOT occupy the same space at the same time? Wasit:
w) Heisenberg
x) Bohr
y) Teller
z) Pauli
ANSWER: Z -- PAULI

Q-3;  Short Answer: Who shared the Nobel Prize in Physics in 1909 with Guglielmo Marconi for his contribution to the development of wireless telegraphy?
ANSWER: (CARL FERDINAND) BRAUN

Q- 4; Short Answer: Who first theoretically predicted the existence of the positron, a positively charged electron? He received the Nobel Prize in Physics in 1933.
ANSWER: (PAUL ADRIEN MAURICE) DIRAC

Q-5;  Short Answer: Name the female physicist who received the Nobel Prize in 1963 for her discovery concerning the shell structure of the nucleus.
ANSWER: (MARIA GOEPPERT) MAYER

Q-6;  Short Answer: The constant potential difference across a 2 ohm resistor is 20 volts How many watts of power are dissipated by this resistor?
ANSWER: 200 WATTS

Q-7; Short Answer: The potential difference across a 4 ohm resistor is 20 volts. Assuming
that all of the energy dissipated by this resistor is in the form of heat, how many joules of heat are radiated in 10 seconds?
ANSWER: 1000 JOULES