Which of the following is an example of a contact force? A magnet repelling another magnet without touching it A ball falling the ground when it is dropped A child pushing a toy car Gravity keeping the earth in order around the sun

What is it called when a neutral object is given a temporary charge?

A uniform solid sphere rolls down an incline without slipping. if the linear acceleration of the center of mass of the sphere is 0.19g, then what is the angle the incline makes with the horizontal?

What is the maximum and minimum wavelength of echolocation?

To receive a different radio channel, you must change the A. wave frequency being received B. wave speed being received C. wave amplitude being received D. wave crest being received

The speedometer on your car reads 35 mph. What is this measuring? A. average speed B. instantaneous speed C. velocity D. acceleration E. none of these

What is the name of the fine soil particles deposited by rivers?

A ball of mass 200 g rolls along the ground at a speed of 5.2m/s. calculate the kinetic energy of the ball. Give answer to one decimal place.

A light bulb that is connected to a 120 V source drawers 1.7 A. What is the resistance of the light bulb? A. 14 B. 71 C. 200 D. 0.014 E. 0.0

Which of the following is an example of heat transfer through radiation? A. A pot of soup warming on a hot burner. B. A crayon melting on a hot sidewalk. C. Beach sand getting warmed by the sun. D. An egg getting cooked in a pot of boiling water.

Which of the following best describes each particle? A. Protons are negative, neutrons are neutral, and electrons are positive. B. Protons are neutral, neutrons are positive, and electrons are negative. C.