What is the weight of the car at the top of the hill
A car with a mass of 1000 kg is driving over a hill at a constant speed of 60 m/s. The top of the hill can be approximated by an arc length of a circle with a radius of 370 m. What is the weight (in N) of the car at the top of the hill?
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Estimate the electrical energy stored in the atmosphere, if the earth's electric field extends upward for 1700 m. and has an average magnitude of 170 V./m.
A 5 cm by 5 cm square loop of wire is rotating at 30 rpm in a uniform magnetic field of strength 3.0T. The direction of the field is perpendicular to the axis of rotation of the loop. What is the emf in the loop?
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The top of the hill can be approximated by an arc length of a circle with a radius of 370 m. What is the weight (in N) of the car at the top of the hill?
A model train moves along a horizontal circular track with a radius of 0.5 m. Starting from rest, the train accelerates at 0.2 m/s2. What is the angular acceleration (in rad/s2) of the train?
Two converging lenses with focal lengths 2cm and 12cm, respectively, are placed 30 cm apart. An object of height= 5 cm is placed15cm to the left of the 2-cm lens. What will be the position and height of the final image produced by this lens system
As a high-power laser engineer you need to focus a 1.17-mm diameter laser beam to a10.3-µm diameter spot20.6cm behind the lens. What focal length lens would you use?
A heat engine operates as a reversible Carnot cycle transfers 6.0 kW of heat from a reservoir at 1000 K and then rejects it to the atmosphere at 300 K. Calculate the thermal efficiency of the engine.
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