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A large turntable rotates about a fixed vertical axis, making one revolution in 7.00 s . The moment of inertia of the turntable about this axis is 1300 kg·m2. A child of mass 40.0 kg , initially standing at the center of the turntable, runs out along a radius. What is the angular speed of the turntable when the child is 2.50 m from the center, assuming that you can treat the child as a particle?
Bolts work because they act like very strong springs and extend slightly when they are tightened. Suppose a steel bolt has spring constant 1.8x108 N/m. How far would it have to stretch in order to provide a force 2000N?
A robot probe drops a camera off the rim of a 388 m high cliff on Mars, where the free-fall
the specific gibbs function of a gas is given by g rt ln ppo-ap where a is a function of t. find expressions fora the
Two stationary positive point charges, charge 1 of magnitude 3.10 nC and charge 2 of magnitude 1.74 nC, are separated by a distance of 36 cm. An electron is free from rest at the point midway between the two charges, and it moves along the line con..
An electron is placed in a region with a constant, uniform electric field pointing in the positive x direction. In what direction is the electric force on the electron
question 2.25 moles of n2 in a state define t1 300 k and vi 1.00l undergoes an isothermal reversible expansion until
a wrecking ball weight 4620 n is supported by a boom which may be assumed to be uniform and has a weight of 2510 n. as
a crane massless boom is used to lift a 2000 lb car. the boom is 60 degrees above the horizontal. the cable above the
Three point charges are placed at the corners of an isosceles triangle. At the left and right end points of the base are 6 micro coulomb and 6 micro coulombrespectively, What is the magnitude of the electric field at the midpoint of the baseline
What are the two major sub-fields of mechanics, and what are they concerned with. Additionally, why is this important to understand
Suppose that two objects attract each other with a gravitational force of 16 units. If the distance between the two objects is doubled, what is the new force of attraction between the two objects
q1. a steel paper clip is bent by a force of 10.2 n exerted on it through a distance of 4.85 cm. by how much does
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