In what respect is the universal law of gravitation similar to Einstein's view of gravity in his general theory of relativity? •Gravity is an attractive force.
•The mass of an object affects gravity.
•The distance between objects affects gravity.

Students design a model roller-coaster track. they place a rubber ball at the highest point on the track and let it go. the ball rolls along the track pulled only by the force of gravity. eventually, it comes to a stop. which change to the design will result in the ball moving the greatest distance?

Which of these is constant for all types of electromagnetic radiation in a vacuum? select one: a. wavelength b. frequency c. photon energy d. amplitude e. velocity

Acamcorder has a power rating of 20 watts. if the output voltage from its battery is 9 volts, what current does it use?