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1

The ratio of energy to frequency for a photon gives

Planck's constant

2

In the relativistic case, doubling the speed of an electron causes its wavelength to

decrease to less than one-half

3

If the position of an electron is measured very precisely there is an uncertainty in measuring its

momentum

4

The elements in the periodic table that have completely filled shells or subshells are referred to as

noble gases

5

Ionic bonding is caused by

the transfer of electrons between atoms

6

An unfilled electron state in the valence band is called

a hole

7

In beta minus decay, the number of neutrons in the nucleus

is decreased by 1

8

The fuel for nuclear fission

U

9

If the Earth is located 10% nearer to the Sun than the real location, what is the total sunshine energy on the Earth?

about 20% more

10

The Sun and planets formed about -- years ago

5 billion

11

What is the electric charge of d-quark?

-1/3

12

What element (oxygen, iron, carbon, silver, silicon) was made only by the supernova explosion?

silver

13

The dark matter is expected to be attracted by --

gravity

14

The most stable element in the universe, one that is energetically unfavorable to both fission and fusion is

iron

15

The temperature of the universe at 1 second after the Big Bang was about

10^10 K

16

When light enters a material of higher index of refraction, its speed

decreases

17

A light ray is reflected by two mirrors that are perpendicular. The new direction of the ray is -- degrees from the original direction

180

18

An object is placed in front of a convex mirror at a distance larger than twice the focal length of the mirror. The image will appear

upright and smaller

19

The chromatic aberration in lenses is due to the -- of light by the lens

dispersion

20

A piece of wood is floating in a bathtub. A second piece of wood sits on tops of the first piece, and does not touch the water. If the top piece is taken off and placed in the water, what happens to the water level in the tub?

It does not change

21

Bernoulli's principle is a statement of the conservation of

energy

22

When a bimetallic strip is heated, the strip will bend toward the side with the -- coefficient of linear expansion

smaller

23

When both the pressure and the absolute temperature of an ideal gas are increased each by a factor of two, the volume occupied by the gas will

not change

24

A mole of diatomic oxygen molecules and a mole of diatomic nitrogen molecules at STP have the same number of --

molecules

25

A sample of an ideal gas is slowly compressed to 1/2 its original volume with no change in temperature. What happens to the average speed of the molecules in the sample?

it does not change

26

The heat required to change a substance form the solid to the liquid state is referred to as the

heat of fusion

27

The process whereby heat flows by means of molecular collisions is referred to as

conduction

28

Relative to a stationary observer, a moving object appears -- than normal

shorter

29

What property of the beam of light applies to a laser beam?

it is coherent

30

The spreading of white light into its spectrum is called?

dispersion