How much power does an average person input into their body

Which of the following processes alwaysresults in an increase in the energy of a system? A) The system loses heat and does work on the surroundings. B) The system gains heat and does work on the surroundings.

How can a force change the motion of an object that is already moving?

What is the speed of an eagle that travels 200 meters in 4 seconds?

A 7.6 kg watermelon is placed at one end of a 5.9 m, 245 N scaffolding supported by two cables. One supporting cable is at the opposite end of the scaffolding, and the other is 0.63 m from the watermelon.

A penny dropped into a wishing well reaches the bottom in 1.5 seconds. what was the velocity at impact?

What is one important role that ocean waters have in heating Earth? absorb and transport solar energy transport nutrients and waste create and emit solar energy wear away rock and soil

Shelly was surprised to learn the dwarf planet Pluto used to be considered a planet. What would have had to be true for Pluto to remain categorized as a planet? Pluto would need to have an atmosphere.

Two uncharged metal spheres, #1 and #2, are mounted on insulating support rods. A third metal sphere, carrying a positive charge, is then placed near #2. Now a copper wire is momentarily connected between #1 and #2 and then removed.

Which waves can travel through a vacuum? A) light waves Eliminate B) ocean waves C) sound waves D) mechanical waves

Select the statement that best describes gravity. Gravity is the force that draws objects closer to the Earth because of the positive or negative charge.