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A 1960 kg weather rocket is launched straight up. The rocket motor provides a constant acceleration for 22.03 s, then the motor stops. The rocket altitude 26.3 s after launch is 6641. You can ignore any effects of air resistance. What was the rocket's acceleration during the first 22.03 s? What is the rocket's speed as it passes through a cloud 6641 m above the ground?
A point charge 4.20 mu C is held fixed at the origin. A second point charge 1.60 mu C with mass of 2.80×10-4 kg is placed on the x axis, 0.280 {rm m} from the origin. The second point charge is free from rest. What is its speed when its distance f..
Two overlapping beams of light of different wavelength ?a = 840 nm and ?b = 460 nm co-propagate through air, What is the angle between the beams travelling through the material
A 35-mm slide (picture size is actually 24 by 36 {mm) is to be projected on a screen 2.10 m by 3.15 m placed 5.30 m from the projector. What focal-length lens should be used if the image is to cover the screen? Answer to be in mm please.
A certain particle of mass m has a momentum of 0.9mc. (For the following questions, leave all your answers in terms of m and/or c.) a) What is the particle’s speed? (Careful here….the answer is not 0.9c)
Steam enters a turbine in a Rankine cycle power plant at 200 psia and 500 degrees F. Calculate the isentropic thermal efficiency if the condenser pressure is 14.7 psia
Two charges are held 0.5 m apart and exert a force of 32 N on one another. what is the force they exert on one another
Consider on an inclined air track, the inclined angle is 2 degrees. If in our experiment, find the distance d between the two photogates
A whale swims due east for a distance of 1.5 km, turns around and goes due west for 5.7 km, and finally turns around again and heads 4.5 km due east. What is the total distance traveled by the whale
A 0.21-kg coffee mug is made from a material that has a specific heat capacity of 900 J/(kg · C°) and contains 0.36 kg of water. determine the minimum power rating of this heater
A yo-yo with a mass of 5 kg is attached to a rope and is swung at constant speed around a vertical circle. what is the length of the rope in meters
A hydraulic lift has pistons with areas 0.40m2 and 5.95m2 , and they're at the same height. how much mass can the larger piston support
A tennis ball of mass m = 0.070 kg and speed v = 25 m/s strikes a wall at a 45° angle and rebounds with the same speed at 45°
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