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Q. An electric field of 9.45 105 V/m is desired between two parallel plates, each of area 37.0 cm2 and separated by 2.45 mm of air. What charge must be on each plate?
Q. A crankshaft with a diameter of 3.0 , rotating at 2400 comes to a halt in 1.90. What is the tangential acceleration of a point on the surface of the crankshaft?
A crate of 31.9- tools rests on a horizontal floor. You exert a gradually increasing horizontal push on it and observe that the crate just begins to move while your force exceeds 345. After that you must reduce your push to 247 to keep it moving at a..
As a function of time t, force component Fx that acts on a 3.00 kg ice block that can move only along the x axis. At t=0, the block is moving in positive direction of the axis, with a speed of 3.0 m/s. what are its (a) speed and (b) direction of trav..
Two circus performers, Jack and Jill, whose total mass is 120 kg, start a swing which is 5 m long such that initially the rope attached to their swing makes an angle of 36 degrees with the horizontal.
A car entering a freeway ramp accelerates from 14 m/s to 25 m/s in 10 seconds. what is the cars average acceleration during this 10 seconds.
Basic science concepts in optics like Which types of electromagnetic radiation can be seen from the surface of Earth.
A spring stiffness 900 N/m and relaxed length 1m stands vertically on a table. You hold a block of mass 1 kg barely touching the top of the spring. Assume you let the mass down onto the spring certain distance very slowly and view the mass is not mov..
A 130 block on a frictionless table is firmly attached to one end of a spring with = 40. The other end of the spring is anchored to the wall. A 21 ball is thrown horizontally toward the block with a speed of 6.6.
A capacitor C stores charge Q when there is a potential difference V. When a potential difference of V + 12.5Volts is used, an extra 45.50 microC of charge is stored. What is the capacitance C.
A map of a burned area obtined from remote sensing contains 120 pixels. The remote sensing image shows that the fire is isolated to 73 of 120 pixels.
A sanding disk with rotational inertia 8.1 x 10-3 kg·m2 is attached to an electric drill whose motor delivers a torque of magnitude 20N·m about central axis of the disk. About that axis and with torque applied for 29 ms, what is the magnitude of (..
Presume your local government wants to raise your taxes in order to support the construction of wind and solar power plants that can give your town with low-polluting energy and help decrease your town's dependence on fossil fuels for energy. Would y..
When two tuning forks of 128 Hz and 149 Hz, respectively, are sounded simultaneously, how various beats per second are heard.
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