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The wheel of a car has a radius of 20cm. It initially rotates at 120rpm. In the next minute it makes 90 revolutions.
(a) What is the angular acceleration?
(b) How much farther does the car travel before coming to rest? There is no slipping.
An electric heater consumes electrical energy at a rate of P = 200 W when connected to a battery with an emf of 120 V. What is the current in the heater
This question requires two answers. The isotope 12N undergoes radioactive decay to form 12C. What charged particle is emitted in the decay process
A proton travels with the speed of 8.34×105 m/s at an angle of 32.3° with the direction of a magnetic field. The field exerts a force of 3.00×10-17 N on the proton. What is the strength of the field.
A 1000-N uniform beam is attached to a vertical wall at one end and is supported by a cable at the other end. A 1960-N crate hangs from the far end of the beam.
A closed steel object is known to have a hollow cavity withint it. It weights 4800 N in air and 3200 N when wieghed under water. What is the outside volume of the object
DEFINE the terms " Cofficient of Static Friction" and " Cofficient of Kinetic Friction, The force probe reading will represent the frictional force
A pressure of 10 Pa is applied through a piston uniformly on the surface of water in a cylinder. How much of this pressure if it is 80 cm deep?
The weight of the block on the table is 484 N and that of the hanging block is 165 N. Ignore all frictional effects, and assuming the pulley to be massless. Find the acceleration of the two blocks
A 9.0-g piece of Styrofoam carries a net charge of -.65, What is the charge per unit area on the plastic sheet
Suppose the ring rotates once every 4.40s . If a rider's mass is 56.0kg , with how much force does the ring push on her at the top of the ride
Points A and B have electric potentials of 257 V and 129 V, respectively. When an electron released from rest at point A arrives at point C its kinetic energy is KE1, What is the electric potential at point C
A diver in a swimming pool shines a flashlight up from below the water%u2019s surface at an angle of 30.0 degrees from the normal. at what angle to the normal does the light leave the water
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