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Suppose one night that the radius of the earth decreased by two (was half as big as normal), but the mass stayed the same. What would be the new value for the free fall acceleration at the surface of the earth?
An iron bolt of mass 63.4 g hangs from a string 32.6 cm long. The top end of the string is fixed. Without touching it, the magnet attracts the bolt so that it remains stationary, displaced horizontally 28.5 cm to the right from the before vertical li..
q1. earth takes about 365 days to orbit once around the sun. mercury the innermost planet takes less than a fourth of
A negative charge of -6.0 10-6 C exerts an attractive force of 64 N on a second charge 0.044 m away. What is the magnitude of the second charge
A 65ohms resistor, an 8.0uF capacitor, and a 35 mH inductor are connected in a series in an ac circuit. Calculate the impedance for a source frequency of 300Hz
So a bike went 10m in 4 seconds and the acceleration was constant the whole way. What Was the instantaneous velocity at 5m? If it helps the whole race was 1000m
Does the change in speed of the downward-moving rock agree with the magnitude of the speed change of the rock moving upward between the same elevations? Explain physically why it does or does not agree.
A ray of light strikes the midpoint of one face of an equiangular (60°-60°-60°) glass prism (n = 1.5) at an angle of incidence of 32.5°. find the angles of reflection at the surfaces
A football player with a mass of 89 kg and a speed of 2.1 m/s collides head-on with a player from the opposing team whose mass is 120 kg. Find the speed of the second player
q1.a square coil of wire with 15 turns and an area of 0.40 m2 are placed parallel to a magnetic field of 0.75 t. the
A ball is shot from the ground into the air. At a height of 10.60 m, the velocity is observed to be v = (8.60 m/s) i + (6.50 m/s) j
A proton travels with a velocity of v = (1.5 x 10^5)m/s i + (4.0 x 10^5)m/s j ? and then enters a magnetic field B = (1.5T)i? . Describe the motion the proton will experience
When a potential difference of 140V is applied to the plates of an air-filled parallel-plate capacitor the plates carry a surface charge density of 4.20E-10
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