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A soccer player extends her lower leg in a kicking motion by exerting a force with the muscle above the knee in the front of her leg. She produces an angular acceleration of 30.0 rad/s2 and her lower leg has a moment of inertia of 0.750 kg•m2. Determine the force exerted by the muscle if its effective perpendicular lever arm is 1.90 centimeter?
A 2.0 meter long string that has a mass of 24.0 grams is under 45 N of tension. What is the maximum speed of a particle on the string
The current in a 44 ohm resistor is 0.10 Amp. This resistor is in series with a 28 ohm resistor, and the series combination is connected across a battery. Determine what is the battery voltage
A highway curve has a radius of 128 m. At what angle should the road be banked so that a car traveling at 27.2 m/s has no tendency to skid sideways on the road
A fisherman is hauling in a fish at a speed of 0.14 m/s. The fishing line is being spooled onto a reel whose radius is 0.030 m. What is the angular speed of the reel
the magnetic field of the earth at a certain location is directed vertically downward and has a magnitude of 50.0
A 768 kg car moving at 27 m/s brakes to a stop. The brakes contain about 16 kg of iron that absorb the energy. What is increase in temperature of the brakes
A 821 kg car is going 29 m/s and the driver has to slam on his brakes to prevent an accident. what is the change in temperature of the brake pads and rotors
A wave with a frequency of 230Hz and a wavelength of 12.9cm is traveling along a cord. The maximum speed of particles on the cord is the same as the wave speed. What is the amplidute of the wave?
define the term linear mass density. also what is implied if it is assumed that the linear mass density of an object
A wooden plank rests on 2 soup cans laid on their sides. Each can has a diameter of 6.5 centimeter, and the plank is 3.0 meter long. Determine how many rotations does each can make
A 5.75 kg mass explodes into three pieces. A 2.25 kg piece moves north at 6 m/s; a 1.25 kg piece moves east at 4 m/s. Find the total energy release by the explosion.
A parallel-plate air capacitor is made from two plates 0.205m square, spaced 0.830cm apart. It is connected to a 120 V battery. What is the energy stored in the capacitor
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