What is the power in watts of the heat engine
There are 200 students riding bikes each producing 110W of heat out put which is used for a heat engine which has an efficiency of 44.1% runing between 30c and -5c. what is the power in watts the heat engine.
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A 2.54kg block is pulled across a floor by a 15.64 N force. The coefficients of static and kinetic friction are 0.4 and 0.2. What is the speed of the block after 4.59 m?
Q1. A forceof 5.0 N moves a 6.0 kg object along a rough floor at a constant speed of 2.5 m/s. (a) How much work is done in 25 s? (b) What power is being used? (c) What force of friction is acting on the object?
A slide projector needs to create a 98-cm-high image of a 2.0-cm-tall slide. The screen is 300cm from the slide. Assume that the projector has a thin lens. (a) What focal length does the lens need? (b) How far should you place the lens from the s
A car travels up a hill at a constant speed of 55 km/h and returns down the hill at a constant speed of 22 km/h. Calculate the average speed for the round trip.
A beam of red light of wavelength 700nm shines on a pair of narrow slits of separation 176um. The light falls on a screen 0.8 m away from the slits. calculate the separation between bright and dark bands on the screen.
The Child can push with a constant force of 3.20N. Use the Work-Kinetic Energy Theorem to find the speed of the car at the end of a 1.50m push.
Sound produced at a point is heard by a person after 5 second, while the same sound is heard by another person after 6 seconds. If the speed of sound is 300 m/s, what could be the maximum and minimum distances between the two persons?
A block of mass 2.10 kg is pushed 2.24 m along a frictionless horizontal table by a constant 19.0 N force directed 27.7o below the horizontal. a) Determine the work done by the applied force.
A baseball is thrown with 34.8 m/s at an angle of 40.8 degree above the horizontal. It is caught at the same height by another player a distance of 38 yards away. What is the speed of the ball, just before it is caught?
A hoop and a disk, both of 0.38- m radius and 3.0- kg mass, are released from the top of an inclined plane 3.3 m high and 9.0 m long. What is the speed of each when it reaches the bottom? Assume that they both roll without slipping. What is the sp
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