A tennis ball weighs 2 kg and is traveling at 10 meters per second. What is the tennis ball's kinetic energy? Find the exponent first and then solve

10 J

20 J

100 J

200 J

Suppose you want to search for brown dwarfs using a space telescope. Will you design your telescope to detect light in the ultraviolet or the infrared part of the spectrum? Why?

Early in the morning, when the temperature is 5.0°C, gasoline is pumped into the 51-liter steel tank of a car until it is filled to the top. Later in the day the temperature rises to 25°C. Given that the coefficient of volume expansion is 0.

Beat frequency problem. Your ear simultaneously hears waves from different sources, so it can hear beats from the two speakers.

A box of mass 3.0 kg is accelerated from rest across a floor at a rate of 3.0 m/s2 for 4.0 s. what is the net work

What is the key variable for calculating potential energy

A ball is moving across a level platform 1.6m above the floor. After rolling off the ball hits the floor 20 from the base of the platform.

Which of the following is an effect of increasing the wavelength of an electromagnetic wave?

a mass of 0.400 is raised by a vertical distance of 0.450m in the earths growth gravitational field. what is the change in its gravitatioanal potential energy? show your work

G davisson and germer performed their experiment with a nickel target for several electron bombarding energies. at what angles would they find diffraction maxima for 48 ev and 60 ev electrons?

A friend tells you that a rowboat is propelled forward by the force of its oars against the water. First explain whether the statement is correct and then identify the action and reaction forces