A leaf floating down from a tree is an example of an object in free fall.

A. True

B. False

List three characteristics of chemical reactions and three characteristics of nuclear reactions

What is the wavelength of a soundwave moving at 340 m/s with a frequency of 265 Hz?

A baseball catcher is performing a stunt for a television commercial. He will catch a baseball (mass 145 g) dropped from a height of 66.0 m above his glove. His glove stops the ball in 0.0118 s.

Which of the following electron configurations for neutral atoms is correct? helium: 1s1, 1p1 nitrogen: 1s2, 2s2, 2p3 silicon: 1s2, 2s2, 3s2, 2p63p2 the third sub-level Li

The temperature of a 50 g sample of aluminum is raised from 20°c to 60°c when 440 cal of heat are added. the specific heat capacity of the aluminum is

If you could see the electric field coming off a proton you would notice that electric field lines are

We wrap a light, nonstretching cable around a 10.0 kg kg solid cylinder with diameter of 38.0 cm cm. The cylinder rotates with negligible friction about a stationary horizontal axis. We tie the free end of the cable to a 14.

A 0.5kg baseball experiences a 10N force for a duration of 0.1s. What is the change in velocity of the baseball

A beam of light passes from air into a cube of zirconium if the angle of incidence is 40"what is the angle of refraction?

Which element combines chemically with sodium to form ordinary table salt? A) aluminum B) argon C) carbon D) chlorine