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When an automobile moves with constant speed down a highway, most of the power developed by the engine is used to compensate for the mechanical energy loss due to frictional forces exerted on the car by the air and the road. If the power developed by the engine is 151 hp, estimate the total friction force acting on the car when it is moving at a speed of 35 m/s. One horsepower equals 746 W.
An instructor wants to use a lens to project the real image of a light bulb onto a screen 1.23 m from the bulb. In order to get the image to be two times as large as bulb, what focal length lens will be required.
Two cylinders have the same radius R = 0.6 m and length 0.6 m, but one is a solid cylinder of massM1 = 4.5 kg, What is the ratio of the final speed of the solid cylinder to that of the hollow cylinder
A 2.00 µC charge is experienced by 0.438 N force in an electric field. What is the magnitude of the electric field?
An electromagnetic wave in a vacuum has a maximum magnetic field amplitude of 5.67×10?7 T. find the maximum electric field amplitude of the wave
A thin lens has a focal length of 10.00 cm for red light. If the index of refraction for the lens material tends to decrease with increasing wavelength
At the instant a traffic light turns green a car that has been waiting at the intersection starts ahead with a constant acceleration of 2.00 m/s2. Determine the speed the car when it passes the truck
You have decided to make a large cooler to store meat. Calculate the net rate of heat flow per second out of the cooler if the interior temperature is 5 C and the exterior temperature can be 45 C
A 75-W, 120-V bulb is connected in parallel with a35-W, 120-V bulb. What is the net resistance
in what way is the npv consistent with the principle of shareholder wealth maximization? what happens to the value of a
when the dried up seed pod of a scotch broom plant bursts open it shoots out a seed with an initial velocity of 2.4 ms
A ball of mass m makes a head-on elastic collision with a second ball (at rest), What is the mass of the second ball
Find out the altitude of the plane
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