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A man ties one end of a strong rope 8.20 m long to the bumper of his truck, 0.621 m from the ground, and the other end to a vertical tree trunk at a height of 2.91 m. He uses the truck to create a tension of8.17 102 N in the rope. Compute the magnitude of the torque on the tree due to the tension in the rope, with the base of the tree acting as the reference point.
N · m
A mass of 1.85 kg is moving 0.413 m/s when it drops into a student's hand. What is the average force that the hand exerts on the mass
A microscope has a 15.0? eyepiece and a 60.0? objective lens 20.0 cm apart. Calculate the focal length of the eyepiece
Like all stars, our sun converts mass into energy which radiates (spherically) in all directions. Calculate the rate at which the sun is losing mass
A 800 kg rocket sled can be accelerated at a constant rate from rest to 1300 km/h in 2.4 s. What is the magnitude of the required net force
A girl with a mass of 40 kg is swinging from a rope with a length of 3.2 m. What is the frequency of her swinging
Multiple-Concept Example 1 discusses the concepts that are relevant to this problem. obtain the rise in its temperature
A man weighing 730 and a woman weighing 410 have the same momentum. What is the ratio of the man's kinetic energy to that of the woman.
A sinusoidal voltage ?v = (75 V) sin (140t) is applied to a series RLC circuit with L = 20 mH, C = 100 ?F, and R = 46 ?. What is the impedance of the circuit
Four 8.5 kg spheres are located at the corners of a square of side 0.80 m. Calculate the magnitude and direction of the total gravitational force
Consider the driven, damped harmonic oscillaror discussed in Section 13-8. Calculate the power dissipated by the damping force
A spring with an elastic constant of 26 N/m, and want it to oscillate once every 0.75 seconds. What mass would you need to attatch to the spring
A baby elephant is fixed in a mud hole. To help pull it out game keepers use a rope to apply a force A as part a. By itself, though, force A is insufficient.
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