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A person on a rotating stool with arms stretched out rotates at an angular speed of 5.00 rad/s. By what factor does the moment of inertia change
Calculate the self-inductance of a 55.0 cm long, 10.0 cm diameter solenoid having 1000 loops. How fast can it be turned off if the induced emf cannot exceed 3.00 V
For the real or imaginary nucleus of 83X^193, find the net electrical charge of the nucleus and the number of nucleons
Some birthmarks can be removed by exposure to 585 nm laser light. Pulses are strongly absorbed by hemoglobin in the capillaries in the birthmark, What is the power of the laser pulse
A volleyball play jumps into the air by first lowering his body by. .4 m and then accelerating by straightening his legs rapidly. what is the force exerted by his feet on the floor
A high diver leaves the end of a 5-m-high diving board, and strikes the water 1.3 s later, 3 m beyond the end of the board. determine the velocity with which she enters the water
A tennis ball is hit with a speed of 27 m/s at an angle of 45o. It lands on the flat roof of a 13-m-tall building. What is its velocity at landing
A 1.10kg block is attached to a spring with spring constant 17.5N/m . While the block is sitting at rest, determine The amplitude of the subsequent oscillations
an inclinced plane mass is .5kg inclinced plane at 30 degrees is 6.40m long, a book has kinetic friction with the incline of .2, find out the speed at the bottom of the incline
What is the minimum energy of a 2.7 g Ping-Pong ball in a 10-cm-long box, What speed corresponds to this kinetic energy
A nuclear power plant generates 3000 MW of energy from nuclear reactions in reactor%u2019s core. What is the maximum thermal efficiency of the power plant
In a science museum, a 130kg brass pendulum bob swings at the end of a 13.7m -long wire. how many oscillations will the pendulum have completed
A spring with spring constant 11N/m hangs from the ceiling. A ball is attached to the spring and allowed to come to rest. What is its the mass of the ball
A 12.6 V battery (assuiming the internal resistance = 0) is connected to two resistors in series. What is the resistance of each resistor
A 1.15kg block is attached to a spring with spring constant 18.0N/m . While the block is sitting at rest, a student hits it with a hammer, find The amplitude of the subsequent oscillations
Ions having equal charges but masses of M and 2M are accelerated through the same potential difference, what is the radius of the arc followed by the lighter
A resistor draws 5.00A from an ideal 12.0-V battery. If this current is used to calculate the resistance, by what percent will the result be in error
A vertical straight wire carrying an upward 30-A current excerts an attractive force per unit length of 8.0*10^-4 N/m on a a second paralled wire 7.0 cm away
Two Stars of equal mass revolve in a circular orbit about a center of mass midway between them. Find the mass of each star
An air gap capacitor is constructed of two parallel 20.0cm x 2.00 cm metal plates separated by a distance of 100.0 um. calculate The charge density on the plates
A charge of 15.0 uC is plaed at the center of a cube. Each side of the cube has an area of 4.50 cm^2 calculate The total electric flux passing through the surface of the cube
An electron is accelerated from rest to 5.60x10^6 m/s in 1.50 us by a uniform electric field calculate the work done by the electric field
A 0.80 kg body oscillates on a spring that, when extended 3.0 mm from equilibrium, has a restoring force of 5.0 N. find the angular frequency of oscillation
Find the self-inductance of a solenoid 44cm long and 6.0cm in diameter that contains 2000 turns of wire
A power station delivers 530 kW of power at 12,000 V to a factory through wires with total resistance 3.5. How much less power is wasted