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The figure shows a lower leg being exercised. It has a 49-Nweight attached to the foot and is extended at an angle with respect to the vertical. Consider a rotational axis at theknee, as indicated. (a) When =89°, find the magnitude of the torque that the weight creates.(b) At what angle does the magnitude of the torque have a value of 15 N·m?
A bottle has a mass of 35.00 g whenempty and 98.40 g when filled with water. What is the specific gravity of this other fluid
A Ferris wheel is moving at an initial angular velocity of 1.0 rev/54 s. If the operator then brings it to a stop in 3.4 min, what is the angular acceleration of the Ferris wheel
Assuming no water resistance, a big fish is gliding through the water with momentum 2.0kg m/s. What was the final velocity of the big fish after the meal
Calculate the electrical potential at the center of the square described as follows: Four charges are placed at the corners of a 20 cm square
an electron with kinetic energy 4.90 kev circles in a plane perpendicular to a uniform magnetic field. the orbit radius
John shoves a 0.50-kg block from the bottom of a frictionless 30.0° inclined plane. He performs 4.0 J of work and the block slides a distance s along the incline before it stops. Determine the value of s.
95.8 kg of ice is melted into water then raised to a temperture of 325.8 K. How much energy is needed to complete this process?
A Mercedes-Benz 300SL (m = 1850 kg) is parked on a road that rises 20° above the horizontal, What is the static frictional force that the ground exerts on the tires
Consider a gas of fermions at temperature T=0 in 3D space with dispersion law E(p) = v lpl^3 where v is a constant. calculate the Fermi energy and the ground energy
A pile driver drives apost into the ground. The mass of the pile driver is 2 500 kg andit is dropped through a height of 8.0 m on each stroke. how far is the postdriven in on each stroke
question1. nbspgravity you shouldnrsquot need a calculator for these problems a sum up the universal law of gravitation
A particle in a 702m-long particle accelerator is moving at0.875c. How long does the particle accelerator appear to the particle
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