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
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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
Uranus has 10 large regular moons
a. True b. False Indicate whether the statement is true or false
The number of moles of solute per liter of solution is called the ______________ of the solution
Fill in the blank(s) with correct word
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