A machine has an efficiency of 80% how much work must be done on the machine so to make it do 50000 J of outfit work

Newton's Laws of Motion 2 Pair the item from the item bank with its corresponding match. ITEM BANK: a. 1st Law b. 1st law c. 2nd Law d. 2nd Law e. 3rd Law a. A fireman turns on his hose and is knocked backwards. b.

How is energy related to the change of state represented by the model? Atoms gain energy as a gas changes to a solid. Atoms gain energy as a gas changes to a liquid, Atoms lose energy as a gas changes to a solid.

Non metals are good conductors of heat and electricity true or false

Describe the motion of the blocks before and after they are knocked down. Also describe the interactions of the blocks with other objects as they are knocked down and fall.

People will buy more of a good when its price falls and less when its price rises, according to the ...

Which element combines chemically with sodium to form ordinary table salt? A) aluminum B) argon C) carbon D) chlorine

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