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An ice dancer with her arms stretched out starts into a spin by an angular velocity of 2.00 rad/s. Her moment of inertia with her arms stretched out is 3.42 kg·m2. What is her angular velocity when she pulls in her arms to make her moment of inertia 1.20 kg·m2?
A 100-turn square wire coil of area 0.04m2 rotates about a vertical axis at 1500 rev/min, as indicated. The horizontal component of the Earth's magnetic field at the location of the loop is 2.0 × 10-5 T. compute the maximum emf induced in the coil..
A rocket is fired at a speed of 71.0 m/s from ground level, at anangle of 56.0 ° above the horizontal. The rocket is firedtoward an 20.6-m high wall, which is located 20.0 m away.
A 1N apple which is 5 m from the ground breaks from its stem and falls to the ground. When it has fallen a distance of 2 meters, calculate its mechanical energy relative to the ground
Suppose a monatomic ideal gas is contained within a verticalcylinder that is fitted with a movable piston. The piston isfrictionless and has a negligible mass. Through what distance does the piston drop
Light is shining perpendicularly on the surface of the earth with an intensity of 131 W/m2. determine the number of photons per second per square meter that reach the earth
A charge of 140 µC is at the center of a cube of edge 60.0 cm. No other charges are nearby. (a) Find the total flux through each face of the cube. (b) Find the flux through the whole surface of the cube. N·m2/C (c) Would your answers to parts (a) ..
You are shining ultraviolet light on a gas of an unknown element. You know that an electron starts in a ground state with an energy of -13.10 eV. What is the energy of the first photon emitted
A block of mass 7.37 kg in outer space is moving at 1.82 m/s by no external forces acting on it. After an explosion, the block is split into two parts both having mass equal to half the mass of the original block. The explosion supplies the two masse..
An isolated conductor of arbitrary shape has a net charge of 6.0 uC. Inside the conductor is a cavity within which is a point charge 66.5 uC, What is the charge on the outer surface of the conductor
a proton traveling at 3.60 kms suddenly enters a uniform magnetic field of 0.750. t traveling at an angle of 55.0
You slide a box of books at constant speed up a 34 degree ramp, applying a force of 190 Newton directed up the slope. Calculate what is the mass of the box
An astronaut leaves Earth in a spaceship at a speed of 0.960c relative to an observer on Earth. how long does the trip take
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