What determines whether a charged object gains or loses electrons

A ball is released from a hot air balloon moving downward with a velocity of - 10.0 meters/second and a height of 1,000 meters. How long did it take the ball to reach the surface of Earth? Given: g = - 9.8 meters/second2

What is is the ratio of the distance over which the force is applied to the distance over which the load is moved

Which of the following does not describe the human brain? 1. Weighs about pound and a half 2. Wrinkled like a walnut 3. Size of a grape fruit 4. Texture of tofu

When it is burned, 1 gallon of gasoline produces 1.3Ã108j of energy. 1500 kg car accelerates from rest to 37 m/s in 10 s.

A ball is thrown straight up at 15m/s. How long does the ball take to reach apex? What is the ball's total time of flight? ... ?

They are generally thought to be blank naturally occurring emotions that are present from birth

If an aircraft is loaded 90 pounds over maximum certificated gross weight and fuel (gasoline) is drained to bring the aircraft weight within limits, how much fuel should be drained?

3. Shortwave radio is broadcast between 3.50 and 29.7 MHz, To what range of wavelengths does this correspond? Why do you suppose this part of the spectrum is called shortwave radio?

How does a star's temperature change as the star ages from a main sequence star to a red giant and from a red giant to a white dwarf?

What factors in the atmosphere seem to have the greatest effect in the amount of radiation received from the sun?