Our friend Peter back at the zoo is using a crane to lift an elephant into an enclosure. The elephant weighs 10,000 N. The crane lifts the elephant 5 meters in 25 seconds. How much power was used to accomplish this task?

25 miles/hour represents a

Fluids at rest possess no flow energy. a) - True b) - False

Which rocky planet has the strongest magnetosphere? A) Mars B) Earth C) Mercury D) Venus

What is the acceleration of an object in free fall?

Nuclear reactions result in tremendous amounts of?

If an object moving in one direction slows down, then the direction of its acceleration is the same as the direction of its motion.

How long does it take for light to travel from the sun to earth?

Two very small spheres are initially neutral and separated by a distance of 0.30 m. Suppose that 2.50 1013 electrons are removed from one sphere and placed on the other. (a) What is the magnitude of the electrostatic force that acts on each sphere?

Why is it important to balance a chemical equation? A. It is not important to balance a chemical equal B. To make sure you have the correct products C. To make sure you have the correct reactants D. To obey the law of conservation of mass

The presence of icicles hanging off the eaves of a wood-framed structure is most likely due to: heavy snow followed by a thaw. improper insulation in wall cavities. use of a poor-quality roof sheathing material. lack of proper roof ventilation.