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