The specific heat of a substance is the energy required to produce a certain change in

A.

state

B. appearance

C. volume

D. temperature

Which statement correctly explains mechanical advantage? A. It is the factor by which a machine shortens the length of time needed to do a certain job. B. It is the number of times a machine multiplies the effort force put into the machine. C.

Which factors affect absorption and reflection of thermal energy? Check all that apply. color of the material mass of the material texture of the material volume of the material weight of the material

What is the period of a sound wave having a frequency of 340. hertz? (1) 3.40 * 10^2 s (3) 9.73 * 10^-1 s (2) 1.02 * 10^0 s (4) 2.94 * 10^-3 s

The air you breathe is an example of a (n) ?

If a 10kg block is at rest on a table and a 1200N force is applied in the eastward direction for 10 seconds, what is the acceleration on the block?

The entropy of a hot baked potato decreases as it cools. is this a violation of the increase of entropy principle? explain.

When aluminum-27 is bombarded with a neutron, a gamma ray is emitted. what radioactive isotope is produced?

A sonar device on a ship sends ultrasound waves under the water to locate a sunken ship. It takes the ultrasound wave 0.6 seconds to travel from the device to the sunken ship and back again. How far below the surface is the sunken ship?

How can you determine the type of radiation an atom emits as its nucleus decays

The atoms of which elements are most likely to share many electrons among many atoms? Check all that apply.