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A.) A 1328.0 g mass is on a horizontal surface with μk = 0.32, and is in contact with a massless spring with a force constant of 550.0 N/m which is compressed. When the spring is released, it does 8.91 J of work on the mass while returning to its equilibrium position. Calculate the distance the spring was compressed.
B.) What is the velocity of the mass as it loses contact with the spring?
C.) How much work is needed to push a 137- kg packing crate a distance of 2.05 m up an inclined plane that makes an angle of 29 o with the horizontal, when inclined plane is frictionless?
D.) the coefficient of friction between the crate and the inclined plane is 0.30?
An ancient club is found that contains 120.00 g of pure carbon and has an activity of 7 decays per second. Determine its age assuming that in living trees the ratio of 14C/12C atoms is about 1.10x10-12. Note that half life of carbon-14 is 5700 yea..
Find the electric field inside the cylinder
A satellite has a mass of 5825 kg and is in a circular orbit 4.34 × 105 m above the surface of a planet. What would be the true weight of the satellite if it were at rest on the planet's surface
A nearsighted patient's far point is 0.723 m from her eyes. What is the distance between her eyes and the glasses
Starting from rest, you pull the string with a constant force F = 8 N along a nearly frictionless surface. At the instant while the center of the disk has moved a distance x = 0.12 m, a length d = 0.27 m of string has unwound off the disk.
A 250 gram sample of a metal is warmed from 60 degrees celcius to 85 degrees celcius when 1000 cal are added. What is the specific heat constant of the metal.
A U-shaped tube open to the air at both ends contains some mercury. Calculate the vertical distance h from the top of the mercury in the right-hand arm of the tube to the top of the water in the left-hand arm
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The focal lengths of the objective and the eyepiece in a microscope are 0.29 cm and 2.50 cm, respectively, What is the final overall magnification of the microscope
What was the change in velocity of the scooter.what mass may be placed 2 cm away from the other end of the bar to keep the bar horizontal.
It takes sound waves of frequency 500 Hz 14.7 ms to make a round trip through a hollow pipe of length 7.5 m filled with helium. What is the speed of sound in helium
A 100 W lightbulb produces 4.0 W of visible light. What is the light intensity on a wall 3.0 m away from the lightbulb
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