Name 3 objects that have gravitational potential energy?

A heat engine with a thermal efficiency of 45 percent rejects 500 kj/kg of heat. how much heat does it receive

A sound changes from 25dB to 5 dB. How much louder does the 25 dB seem to us

Calculate the amount of gravitational potential energy at the top of each hill and at the bottom of each valley. Be sure to convert your distance measurements to meters. Use an approximated value of 58.0 g for the mass of the tennis ball, and 9.

Mac and tosh are arguing. Macs says that if he flings the Jell-O with a greater speed it will have greater inertia.?

Complete this equation that represents the process of nuclear fusion. Superscript 226 Subscript 88 Baseline R a yields Superscript A Subscript B Baseline R n + Superscript 4 Subscript 2 Baseline H e A: B:

What is normal distribution in statistics?

Which of the following water samples would be considered acidic

A linearly-polarized electromagnetic (EM) wave has an electric field with amplitude 1000 V/m. You hold a a linear polarizer in front of it and rotate the polarizer so that all of the EM wave is blocked. You then rotate the polarizer 30 degree.

Let y'=4 x. find all values of r such that y = rx^{2} satisfies the differential equation. if there is more than one correct answer, enter your answers as a comma separated list.

What are the starting materials for nuclear fission