You place your pencil on your desk it stays there

Planck's constant allows for the conversion of energy to: frequency wavelength photons choice a and b

A 1500 kg car travels 400 m in 12s. What is it's momentum? An electron has a mass of 9.1 * 10^-31 kg. What is it's momentum if it is traveling at a speed of 3.5*10^6m/s?

A diver shines a flashlight upward from beneath the water (n=1.33) at a 36.2° angle to the vertical. At what angle does the light leave the water? Express your answer using three significant figures?

What is the average speed of a soccer ball that travels 34m in 2s?

A disturbance sends ripples across water in a tub. These ripples are an example of a rarefaction

StarsA. begin as protostars, which fire up when they collapse and become denser and hotter. B. create elements by splitting the nuclei of small atoms into the nuclei of larger atoms. C. have unlimited amounts of fuel and therefore exist indefinitely.

The "atomic weight" of an atom reflects the average number of A) protons. B) neutrons. C) electrons. D) protons + neutrons. E) protons + neutrons + electrons.

How fast would a 2-kilogram object need to move to have the same kinetic energy as a 4-kilogram object moving at 8 meters per second?

The frequency of the George Washington Bridge is 2.05 Hz. What is its period?

Is speed and average speed the same thing?