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A thin spherical shell of mass 0.400 kilogram and diameter 0.250 meter is filled with alcohol (ρ = 806 kg/m3). It is then released from rest at the bottom of a pool of water. Determine the acceleration of the alcohol-filled shell as it starts to rise toward the surface of the water. m/s2
Two balls of radius 2.00 mm have a separation between theircenters of 5.33 cm. The same electric charge is placed on bothballs so that there is a repulsive force between them of2.65 N. Assume that the charge is uniformlydistributed over each ball.
A brass rod is 48.7 cm long and an aluminum rod is 70.6 cm long when both rods are at an initial temperature of 0° C. The rods are placed in line with a gap of 0.7 cm between them.
Two astronauts, each having a mass M, are linked by a rope of length d having negligible mass. They are isolated in space, orbiting their center of mass at speeds v.
The energy gap in silicon is 1.1eV. The average electron effective mass is 0.31m, where m is free electron mass. Calculate the electron concentration in the conduction band of silicon at T=300K
The internal energy of a gas is 1000 J. The gas is compressed adiabatically, and its volume decreases by 500 cm3. what is the internal energy of the gas
A block of ice rests across the whole of a rectangular table. A wire on which we attach a 10 kg weight surrounds the ice. Explain why the wire will go through the ice block without the ice breaking into two pieces.
A 600 turn solenoid, 25 cm long, has a diameter of 2.8 cm. A 10 turn coil is wound tightly around the center of the solenoid. If the current in the solenoid increases uniformly from 0 to 5.0 A in 0.48 s, what would be the induced emf magnitude in the..
A compact disk on a CD player rotates clockwise. The disk completes one revolution in 0.234 s, what is the angular velocity of the disk and its speed at 1.42 cm from the axis of rotation
A wire lying along a y axis from y = 0 to y = 0.276 m carries a current of 1.62 mA in the negative direction of the axis. The wire fully lies in a nonuniform magnetic field given by = (0.466 T/m)y + (0.293 T/m)y. What is z components of the magnetic ..
A car is moving with a velocity (3.0m/s)x + (1.0m/s)y and 3.0 seconds later its velocity is (6.0m/s)x - (3.0m/s)y.
Suppose a star experiences an outburst in which its surface temperature doubles but its average density, By what factors do the star's radius and luminosity change
In a region of space where the electric field is constant everywhere, as it is inside a parallel plate capacitor, is the potential constant everywhere? Explain
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