How much work must be done to accelerate an 8.5*10^5 kg train from a) 10m/s to 15m/s b) 15m/s to 20m/s and c) to an Initial stop of 20m/s

An ideal gas in a piston is placed in a refrigerator, which removes 413 J of energy from the gas via cooling. The plunger on the piston is pushed down, which does 70 J of work on the gas.

Number of electrons in Na

If you are transported to a planet that has the same mass as Earth, but is larger in size, how would this affect your weight when standing on the planet's surface? Explain your answer.

Two pulses of exactly the same size and shape are traveling toward each other along a stretched rope; they differ only in that one is upright while the other is inverted.

A factory has a solid copper sphere that needs to be drawn into a wire. The mass of the copper sphere is 76.5 kg. The copper needs to be drawn into a wire with a diameter of 9.50 mm. What length of wire, in meters, can be produced?

The period of a 440 Hertz sound wave is __ seconds. 1/440 1/220 220 440

Match the term to the correct description. ~A type of circuit where part of the loop is broken. ~The flow of electrons. ~A loop that creates a pathway for electricity to follow. ~A type of circuit with only one path for the electricity to follow.

What is the mass of an object that is accelerating at 10 m/s^2 when a force of 2,386 N is exerted

According to the U. S. Green Building Council, what percentage of the world's energy use and greenhouse gas emissions can be attributed to buildings?

Magnets are often fitted to the doors of refrigerators and cupboards WHY?