Which of the following is not a form of radiation

radio waves

sound waves

microwaves

gamma waves

Why is air a pure substance?

The x and y component of a force are 2 and - 3N the force is A) 2i-3j B) 2i+3j C) - 2i-3j D) 3i+2j

Take the north direction as the positive y-direction and east as positive x. The origin is still where the student starts biking. Let dN be the displacement vector corresponding to the first leg of the student's trip. Express dN in component form.

You place the spring vertically with one end on the floor. You then drop a book of mass 1.10 kg onto it from a height of 0.600 m above the top of the spring. Find the maximum distance the spring will be compressed.

Which of the following is a displacement? a. 5 m/s c. - 0.7 m/s2 b. 10 ft d. 3 blocks east

When friction is reduced

Compared with ultraviolet radiation, infrared radiation has greater (a) wavelength; (b) amplitude; (c) frequency; (d) energy.

What is the weight on earth of a girl with a mass of 16 kg?

An elephant, which has a mass of 2200 kg., is moving with a velocity of 11.0 m/s across a frozen lake in Africa when itbegins to slide across the ice. The sliding elephant then collides with a massive 4000.

What sets sound waves?