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A 500-kg ball at the end of a 30-m cable suspended from a crane is used to demolish an old building.
If the ball has an initial angular displacement of 10o from the vertical, determine its speed at the bottom of the arc.
After 10.0 second, a spinning roulette wheel at a casino has slowed down to an angular velocity of +2.00 rad/s. Find the angular displacement of the wheel
a 5kg ball is hanging from a long but very light flexible wire when it is struck by a 1.5kg stone traveling
A 0.34 kg iron horseshoe that is initially at 616 ?C is dropped into a bucket containing 25 kg of water at 28 ?C. What is the final equilibrium temperature? Avoid any energy transfer to or from the surroundings and assume the specific heat of iron is..
0.0029 J of energy are stored in a parallel-plate capacitor whose plates each have area 0.30 m2 and are 1.5 mm apart
A cyclist intends to cycle up a hill whose vertical height is 170m. Assuming the mass of bicycle plus cyclist is 75kg , calculate how much work must be done against gravity
A microscope has an objective lens by a focal length of 16.22 mm and an eyepiece by a focal length of 9.50 mm. With the length of the barrel set at 30.0 cm, the diameter of a red blood cells image subtends an angle of 1.43 m rad with the eye.
a plane leaves the airport in galisto and flies 155 at 68.0east of north and then changes direction to fly 270 at
An air-filled cylindrical inductor has 2500 turns, and it is 3.8 in diameter and 32.6 long. What is its inductance? How many turns would you need to generate the same inductance
Calculate the average speed of the toy car
A factory worker pushes a 28.4 kg crate a distance of 4.9 m along a level floor at constant velocity by pushing downward at an angle of 32degrees below the horizontal. How much work is done on the crate by friction during this displacement
A large tank is filled with methane gas at a concentration of 0.585 kg/m3 The valve of a 1.38-m pipe connecting the tank to the atmosphere is inadvertently left open for fourteen hours. What is the cross-sectional area of the pipe
a steam pipe is covered with 1.50 cm thick insulating material with a thermal conductivity of 0.200
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