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A 0.017-kg record with a radius of 15cm rotates with an angular speed of 29rpm. Find the angular momentum of the record.
A mover's dolly is used to deliver a refriger- ator up a ramp into a house. What gravitational potential energy is gained by the refrigerator
A laser pulse has an energy of 24 J and a beam radius of 2 mm. Find the rms values of the electric and magnetic fields in the pulse
A copper sheet with length 1.77 m, width 0.587 m, and thickness 1.27 mm is oriented so that its largest surface area is perpendicular to a magnetic field of strength 4.93 T. What is the magnitude of the force on this sheet
A small office building air conditioner operates on 250 V AC and consumes 3.88 kW, What is its effective resistance and How is energy related to power? Check units for consistency
An impulse of150 Ns is required to stop a person's head in a carcollision. If the face is in contact with the steering wheelfor 0:0304 s, what is the force on the cheekbone
An experimenter arranges to trigger two flash bulbs simultaneously, What is the time interval between them according to her
A mass of 0.2 kg attached to a spring oscillates on a frictionless horizontal surface. Its motion is described by x = 0.05 m cos(50 rad/s t + 1.57 rad). find the force constant and the mechanical energy
A wire loop of radius 0.50 m lies so that an external magnetic field of magnitude 0.30 T is perpendicular to the loop. Find the magnitude of the average induced emf in the loop
A probe from earth, with a mass of 10^6 kg, is in orbit aroun planet Pud in another solar system. find the acceleration due to gravity on the surface of the planet Pud
A small plastic sphere with a charge of - 5.0 nC is near another small plastic sphere with a charge of - 12 nC. what is the distance between the spheres
A small disk (not sphere) of radius a and charge +Q is concentric with larger disk, connected to a thin ring of radius b and charge -Q. What is the total capacitance
Jack and Jill are maneuvering a 3400 kg boat near a dock. Initially the boat's position is m and its speed is 1.0 m/s. How much work does Jill do
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