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There are two horizontal forces acting on a 10 kg crate on a frictionless floor: 20 N - left and 8N - right. According to the Newtons Law of dynamics what should be the magnitude and direction of the third force to make the crate move horizontally at constant velocity.
A styrofoam cooler (K = .030 W/mo C) has an average surface area of 0.338 m2 and an average thickness of 2.8 cm. How much heat is required to melt the ice in the cooler
In an ideal Rankine Cycle, steam exhausts a turbine at the rate of 10.1 million lbm per hour into a condenser at a temperature of 102 degrees F (Tsat for 1.0 psia), What is the rate of heat rejection by the condenser
What are the pressure pb and the volume Ve? If the methane does WOS = 1.73 kJ of work during the original Stirling cycle, how much work WMS does the methane do during one cycle of the modified Stirling cycle?
Consider three identical metal spheres, A, B, and C. Sphere A carries a charge of -4q. Sphere B carries a charge of -9q. How much charge ends up on sphere C
Over a time interval of 2.01 years, the velocity of a planet orbiting a distant star reverses direction, changing from +21.9 km/s to -24.4 km/s. Find the total change in the planet's velocity
A layer of oil of thickness 200nm floats on top of a layer of water of thickness 400nm resting on a flat metallic mirror. The index of refraction of oil is 1.24 and that of the water is 1.33. A beam of light is normally incident on these layers. W..
The question reads: A spaceship is approaching a space station at aspeed of 1.8 x 105 m/s. What is the change in frequency
A simple harmonic oscillator with m=0.815 kg and total energy E=135 J has amplitude 1.35m, Find the maximum acceleration
suppose a trucks mass is 2000 kg while the cars mass is 1000kg. and suppose the truck slows down by 5 ms during the
An astronaut travels at a speed of 0.98c from the Earth to a distant star that is 6.4*1017 m away. If the astronaut is 26 years old when she begins her trip, how old is she when she arrives at the star?
17.8 grams of liquid water are at 0 degrees celesius and another 17.8 grams are at 100 degrees celsius. What is the mass (in grams) of the liquid water that remains
Two 0.8-lb balls are to be put successively into the center C of the slender 4-lb tube AB. Knowing that when the first ball is put into the tube the initial angular velocity of the tube is 8 rad/s and neglecting the effect of friction
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