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A wire has a resistance of 22.9 ohm. It's melted down, and from the same volume of metal a new wire is made that is four times longer than the original wire. Find what is the resistance of the new wire?
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A 10000 N car comes to a bridge during a storm and finds the bridge washed out. The 750N driver must get to the other side, What is the speed of the car just before it lands safely on the other side
On the Apollo 14 mission to the moon, astronaut Alan Shepard hit a golf ball with a golf club improvised from a tool. How much farther would it have traveled on the moon than on earth
q1. according to the guinness book of world records 1990 edition p. 169 the highest rotary speed ever attained was 2010
A flask with a volume of 2.40L , provided with a stopcock, contains ethane gas (C2H6) at a temperature of 284 K and atmospheric pressure 1.013×105 Pa. What is the final pressure of the ethane in the flask
an arch of 120 degrees carries a total charge of q. the radius of the arch is r ignore the thickness of the wire. what
A corner reflector is made from a triangular prism with an index of refraction of n=2.54 (in a right angle 45 45 90 triangular prism). What is the maximum angle of incidence
Using Gauss' Law, find the electric field (magnitude and direction) between the cylindrical shell and the rod. The electric field will depend on the distance r from the central axis of the solid rod. Find the amount of charge enclosed by the surfac..
A mass M = 95.0 kg is suspended by a massless string from the ceiling of a van which is moving with constant acceleration a, what is the acceleration a of the van
A 3.83 long organ pipe is open on both ends. Find its fundamental frequency Find its first three overtone frequencies
A projectile is launched straight up at 59 m/s from a height of 73 m, at the edge of a sheer cliff. The projectile falls, just missing the cliff and hitting the ground below.
A 2.3kg cart is rolling across a frictionless, horizontal track toward a 1.5kg cart that is held initially at rest. find the velocity of the first cart when the second cart was still at rest
A size-5 soccer ball of diameter 22.6cm and mass 426g rolls up a hill without slipping, reaching a maximum height of 6.50m above the base of the hill. At what rate was it rotating at the base of the hill
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