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The Eiffel tower in Paris is made of iron. It is 300 meters tall on a cold day (T = - 5 degrees Celsius). What is its height on a hot day when the temperature is 35 degrees Celsius? (your answer should be in SI units and rounded to 3 decimal places)
How much energy is lost through your hands in one minute after touching on a cold surface at 10 C compared to being exposed to cold air at 10 C
A 7.00-cm-long wire is pulled along a U-shaped conducting rail in a perpendicular magnetic field. The total resistance of the wire and rail is 0.350?. How big is the pulling force
A pitcher throws a ball weighing 0.3 lb at a velocity of 90 miles per hour (horizontally). The mass moment of inertia of a spherical body is 0.4mR2, What is the total energy of the ball
On an essentially frictionless horizontal ice-skating rink, a skater moving at 3.3 m/s encounters a rough patch that reduces her speed by 41% to a friction force that is 20% of her weight
A car tire is 64.0cm in diameter. The car is traveling at a speed of 16.0m/s. What is the tire's rotation frequency
A 1.00 kg beaker containing 2.0 kg of oil (density=916-kg/m3) rests on a platform scale. A 2.00 kg block of iron is suspended from a spring scale and is completely submerged in the oil.
An oscillating block-spring system has a mechanical energy of 2.78 J, an amplitude of 6.73 cm, and a maximum speed of 4.12 m/s. find the spring constant and the mass of the block
You are designing a hydraulic lift for an automobile garage. It will consist of two oil-filled cylindrical pipes of different diameters. What should be the diameter of the pipe under the platform
A spacecraft in a circular orbit wishes to transfer to another circular orbit of quarter the radius by means of tangential thrust to move into an elliptical orbit and second tangential thrust at the opposite end
Find speed of the block at the bottom of the ramp. What is tangential acceleration of a bug on the rim of a 78 rpm record of diameter 7.41 in. if the record moves from rest to its final angular speed in 4 s.
find magnitude of the tension in the wire and magnitudes.
A shopper standing 2.40 m from a convex security mirror sees his image with a magnification of 0.240. What is the focal length of the mirror
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