An automobile use a 75,000 J of chemical energy from Gosselin produce 10,000 J of useful output energy

A. calculator it's efficiency

B. where does the lost energy go, that part of the input work that doesn't become useful work?

The units of density for a rectangular piece of wood are?

Which of the following circuits will stop producing light if one bulb burns out? * Circuit 1 - two light bulbs one battery Circuit 2 - three light bulbs 1 battery Circuit 3 - two light bulbs one battery Circuit 4 - three light bulbs 1 battery

What are things that we can do to protect our climate for future generations?

If two electrons in the same atom have the same four quantum numbers, then they must have the same energy. a. trueb. falsec. They cannot both have the same four quantum numbers.

When chasing a hare along a flat stretch of ground, a greyhound leaps into the air at a speed of 10.1 m/s, at an angle of 16.9° above the horizontal. (a) What is the range of his leap? (b) For how much time is he in the air?

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.