Sodium-22

Sodium-25

# of protons

# of neutrons

# of electrons

A solid block of metal has a density of 6 kg/m^3. what happens to the density if the block is cut in half?

The energy of motion is called A. kinetic energy. B. potential energy. C. thermal energy. D. work.

How much potential energy does a 40-kg medicine ball gain when it is lifted 5 m? Use the formula: GPE = mass X gravity (9.8 m/s2) X Height Question 16 options: A 20.4 J B 100 J C 1960 J D 200 J

Sound waves travel the fastest through which of the following? A. cold gas B. hot gas C. Hot vacuum D. Cold vacuum

A quanta is best described as?

you often hear people particularly TV announcers talk about "high rate of speed" what do you think they mean according to the specifics of physics definitions what are they really saying

What is the value of x in the equation Ix - 3y = 30, when y = 15?

32. How much work is done pushing an 80 N box 2 m across ue surtout What work is done? a. 40 J c. 160 J b. 20 J d. 240 J

Which is a resource that the National Park Service manages? A. memorials B. wildlife refuges C. ecosystems D. endangered species

Write two examples (mathematical expression) of physical laws that change inversely with the square of the distance.