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A box of unknown mass begins at the base of a 30 degree ramp with an initial velocity of 10.0 m/s. It coasts up the ramp to some maximum height, and then falls back down to its original position. If the coefficient of kinetic friction between the box and the ramp is 0.3, calculate the maximum distance up the ramp which the box will reach?
A certain type of laser emits light that has a frequency of 5.2 x 10^14 Hz. The light, however, occurs as a series of short pulses, each lasting for a time of 2.7 x 10-11 s. How many wavelengths are there in one pulse.
A small block with a mass of 0.120kg is attached to a cord passing through a hole in a frictionless, horizontal surface. The block is originally revolving at a distance of 0.50 m from the hole with a speed of 0.70m/s. The cord is then pulled from ..
The rotor in a certain electric motor is a flat, rectangular coil with 82 turns of wire and dimensions 2.25 cm by 3.88 cm. The rotor rotates in a uniform magnetic field of 0.800 T. Find the maximum torque acting on the rotor
A charge of -2.655uC is located at (2.660m , 4.621m ), and a charge of 1.495uC is located at (-2.574m , 0). Find the electric potential at the origin
A circular coil enclosing an area of 200 cm2 is made of 210 turns of copper wire. The wire making up the coil has resistance of 3.0 ?, what is the average current in the coil during that time
If you drop an aspirin and it takes 0.18 sec to hit the table, how high above the table was the aspirin when it released?
Find the work done by this force on the particle and the final speed of the particle as it moves along a path.
A billiard ball strikes and rebounds from the cushion of a pool table perpendicularly. find the average net force exerted on the all by the cushion
A shopper pushes a cart 50 m south down one aisle and then turns 90° west and moves 28 m. He then makes another 90° turn and moves 11 m.
A beam of light in air strikes a piece of glas (n = 1.59), Find the angle of incidence if the angle of reflection is twice the angle of refractio
The intersection is 15 m wide. Her car's maximum deceleration is -5.20 m/s2, whereas it can accelerate from 44km/h to 70km/h in 7.8 s. overlook lengths of her car and her reaction time.
An X-ray photon with a wavelength of 0.260nmscatters from a free electron at rest. Find the final momentum of the photon
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