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A wire 4.38m long and 6.00 mm in diameter has a resistance of 15.0mΩ. A potential difference of 28V is applied between the ends.
a) What is the current in the wire?b) Calculate the resistivity of the wire material.
A satellite of mass 310 kg is launched from a site on the Equator into a circular orbit at 8000 km above Earth's surface. DATA: Rearth=6.38×106 m. a) What is the acceleration of gravity at this altitude? b) What is the speed of the satellite? c) What..
Assume a distant star functions as a blackbody at a temperature of 12,000 K and produces light at a rate of 7.72 x 1030 W. What is the radius of the star
A hockey puck is hit on a frozen lake and starts moving with a speed of 13.4 m/s. Five seconds later, its speed is 5.40 m/s. What is its average acceleration
The captain of an infamous ship spots an iceberg ahead. Currently the ship is travelling east at a speed of 37.0 knots. How many seconds will it take before the iceberg is directly ahead of the ship
Wrongly called for a foul an angry basketball player throws the ball straight down to the floor.if the ball bounces straight up and returns to the floor 2.8s after first striking it, what was the ball's greatest height above the floor?
A person with a mass of 81Kg and a volume of .089M^3 floats quietly in water. What is the volume of the person that is above water
a 100N force acts for 0.05s on a .10kg ball with an initial velocity of -20m/s, What is the final momentum of the ball
It again strikes the floor. Find (c) the time interval from when the ball was launched to when the ball strikes the floor and (d) the horizontal distance from the point where the ball was launched to the point where the ball strikes the floor.
A gymnast with mass m1 = 41 kg is on a balance beam that sits on (but is not attached to) two supports. The beam has a mass m2 = 108 kg and length L = 5 m. Each support is 1/3 of the way from each end. at least the gymnast stands at the left end of..
A merry-go-round starts from rest and accelerates uniformly over 10.5 s to a final angular velocity of 6.90 rev/min. Find the person's maximum radial acceleration
A 1530 kg car is traveling with a speed of 14.5 m/s. What is the magnitude of the horizontal net force
Gold, which has a density of 19.32 g/cm3, is the most ductile metal and can be pressed into a thin leaf or drawn out into a long fiber, If a sample of gold with a mass of 2.477g, is pressed into a leaf of 4.116 ?m thickness, what is the area (in m2)..
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