What is the angular acceleration of the train
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?
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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?
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.
A proton beam in an accelerator carries a current of 115 µA. If the beam is incident on a target, how many protons strike the target in a period of 26.0 s?
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