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 roach that runs for its life because you try to hit it with your physics book runs off the horizontal tabletop with a speed of 0.872 m/s. It strikes the floor a horizontal distance 0.296 m away from the edge of the table. Ignore air resistance.
What is the magnitude of the force exerted by the water on the bottom of the container?
Suppose the mirror is convex. The distance between the image and the object is the same as in part (a), but the image is 0.500 the size of the object. Determine the focal length of the mirror.
A particle travels along the X axis with a constant accelerations of +3.0 m/s^2 . it is at X = -100 m at time t = 4.0 s. In addition. it has a velocity of +15m/s at a time 6.0 s later. Find its position at thes later time.
A 6.0 mC charge is placed at the origin and a second charge is placed on the x-axis at x = 0.30 m. If the resulting force on the second charge is 5.4 N in the positive x-direction, what is the value of its charge?
Comet orbits are highly elliptical. A periodic comet orbiting a two solar mass star with an orbital period of 200 years comes to a periastron distance of 0.7 AU. Using only Keplers third law calculate a) the semimajor axis of the comet's orbit b)
Assume you pay $0.10 per kW-hour for electricity. How much would it cost just to keep the hot water inside the heater for one week? If the heat lost is 6.87*10^12.
A solenoid of length 6.3 cm and diameter 0.77 cm is wound with 178 turns per cm. The current is decreasing at a rate of 37.8 A/s. (a) What is the induced emf in one of the windings? (b) What is the induced emf in the entire solenoid?
Starting at a distance of 1.88 m and moving radially outward, how many of the additional equipotential surfaces are crossed by the time the electric field has shrunk to one-half of its initial value? Do not include the starting surface.
Sand is dumped onto a conveyor belt at the rate of 25 kg per second. What force is needed to keep the belt running at a linear speed of 2 m/s?
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