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Q1. Earth takes about 365 days to orbit once around the sun. Mercury, the innermost planet, takes less than a fourth of this time to complete one revolution. Assume some mysterious force causes Earth to experience an average angular acceleration of 6.05 × 10-13 rad/s2, so that after 12.0 days its angular orbital speed is the same as that of Mercury. Calculate this angular speed and the period of one orbit.
Q2. A 48.9 kg pole vaulter running at 13.0 m/s vaults over the bar. Assuming that the vaulter's horizontal component of velocity over the bar is 1.7 m/s and disregarding air resistance, how high was jump?
What is the ratio of the amplitude
A 21 g bullet travelling at 255 m/s is fired into a 0.452 kg wooden block anchored to a 100 N/m spring. How far is spring compressed to the nearest thousandth of a meter.
What is the maximum displacement of the bridge deck?
A 120 granite cube slides down a 45 frictionless ramp. At the bottom, just as it exits onto a horizontal table, it collides with a 210 steel cube at rest.
Two wires are identical, except that one is aluminium and one is gold. The aluminium wire has a resistance of 0.18. What is resistance of the gold wire.
What mass (in grams) of steam at 100°C should be mixed with 257 g of ice at its melting point, in the thermally insulated container, to produce liquid water at 84.0°C.
What is clowns total displacement
Find out the magnetic force on the rod
An average temperature of the rest of the universe
Compute magnitude of the average emf
Find out the effective coefficient of kinetic friction
Find out the magnetic field strength
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