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A person wants to determine the spring constant of an exercise stretch cord. He pulls the cord with a force probe that exerts a 45-N force on the cord, causing it to stretch 20cm. Using the Hooke's law find the spring constant of the cord. Assume that the stretch does not exceed the elastic range of the material.
A dog sits 1.53-m from the center of a merry-go-round with an angular speed of 1.65 rad/s. If the magnitude of the force that maintains the dog's circular motion is 38-N, what is the dog's mass.
A block of mass m sits on a horizontal frictionless tabletop. It is connected by a light rope that passes over a light frictionless pully to a block of mass 5 kg that is suspended from the end of the rope. What is the mass m of the block on the tab..
Consider a parallel-plate capacitor with an area of 0.9 cm2, with a plate spacing of0.19 mm, and filled with quartz. At what voltage will this capacitor exhibit dielectric breakdown?
A 53.6 kg crate is dragged across a floor by pulling on a rope attached to the crate and inclined 16.0° above the horizont, If the coefficient of static friction is 0.510, what minimum force magnitude is required from the rope to start the crate mo..
Neutron stars consist only of neutrons and have unbelievably high densities. Calculate the density of such a star
A 20.0 kg wood ball hangs from a 1.70 m-long wire. The maximum tension the wire can withstand without breaking is 500 N. What is the largest speed this projectile can have without causing the cable to break
question1a 8kg mass moves in a circular path of 4m radius on a frictionless horizontal table. it is attached to a
A dolphin at Seaworld is to jump through a hoop held in the air by a trainer, At what speed did the dolphin leave the water
A planoconcave lens (n = 1.52) has a focal length of -24.6cm. What is the radius of the concave surface
you are driving through town at 12 when suddenly a car backs out of a driveway in front of you. you apply the brakes
Magnus has reached the finals of a strength competition. In the first round, he has to pull a city bus as far as he can. One end of a rope is attached to the bus, while the other is tied around Magnus\'s 48 inch waist. If a force gauge placed half..
Considering Wiener's experiment (fig. 7.14) in monochromaticlight of wavelength 550nm, determine the number of bright bands per centimeter that will appear on it
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