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A rocket of mass m is fired vertically upwards. The interaction between its engine and the surroundings produces an upward force of magnitude F=Fmax-Ct^2 (where t is in seconds) until F=0 then the engine shuts off. Determine the speed of the rocket at the instant the enine shuts off, voff, as a function of Fmax, C, m, and g.
Imagine removing one electron from every atom in a tiny cube of gold 1 mm on a side. (Never mind how you would hold the resulting positively charged cube together.) Do the same thing with another such cube a meter away.
A 85.1 kg astronaut is working on the engines of a spaceship that is drifting through space with a constant velocity. How long does it take the astronaut to reach the ship
A wheel with c=4/9, a mass of 43.8kg, and a rim radius of 31.1cm is mounted vertically on a horizontal axis. Find the angular acceleration of the wheel
Monochromatic light falls on a slit that is 3.50 multiplied by 10-3 mm wide. what is the frequency of the light used
A camera flashtube requires 8J of energy per flash. The flash duration is 2m/ss}. What power does the flashtube use while it's flashing?
A reflecting, spherical Christmas tree ornament has a diameter of 6.0 cm. Where is the image located
When you irradiate a metal with light of wavelength 425 nm in an investigation of the photoelectric effect, Find the work function of the irradiated metal
An air molecule is moving at a speed of 438m/s. How many meters would molecule move during 7ms (milliseconds) if it didn't collide with any other molecules.
An open container holds ice of mass 0.530 kg at a temperature of -15.7 Celsius . The mass of the container can be ignored. How much time passes before the ice starts to melt
A 4.8-kg bucket of water is raised from a well by a rope. find the force exerted by the rope on the bucket
think about the modes of substances in the gas phase and explain why potential energy is included in the thermal energy of some substances in the gas phase, when a monatomic solid/liquid turns into a gas, what are the PE and KE equal to then
The fastest pitched baseball was measured at 46 m/s, what force did he produce on the ball during this record-setting pitch
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