The motion of a piston in an auto engine is simple harmonic. If the piston travels back and forth over a distance of 10 cm, and the piston has a mass of 1.5 kg, what is the maximum speed of the piston and the maximum force acting on the piston when the engine is running at 4 200 rpm?

What will be an ideal response?


22 m/s, 14,500 N

Physics & Space Science

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A horizontally-projected beam of protons travelling at 55 km/s travels between two parallel plates separated by 7.4 cm, and 12 cm long, between which there is an electric field of 7.2 mV/m upward. If the beam enters the region at exactly midway vertically between the plates, and exits the region 7.2 microns closer to the lower plate, where relative to the lower plate would a beam of electrons – injected into the region at the same location – exit? The proton mass is 1.67 x 10-27 kg and that of the electron is 9.11 x 10-31 kg.

A. 0.9 cm B. 5.1 cm C. 2.3 cm D. 4.6 cm

Physics & Space Science

Kepler’s Third Law relates

•(a) density and pressure •(b) period and semi-major axis •(c) semi-major axis and orbital velocity •(d) period and orbital velocity

Physics & Space Science

Uranus has 10 large regular moons

a. True b. False Indicate whether the statement is true or false

Physics & Space Science

The number of moles of solute per liter of solution is called the ______________ of the solution

Fill in the blank(s) with correct word

Physics & Space Science