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A 2.5 kg box is held released from rest 1.5 meters above the ground and slides down a frictionless ramp. It slides across a floor that is frictionless, except for a small section 0.5 meters wide that has a coefficient of kinetic friction of 0.4. At the left end, is a spring with spring constant 250 N/m. The box compresses the spring, and is accelerated back to the right. What is the speed of the box at the bottom of the ramp? What is the maximum distance the spring is compressed by the box? What is the maximum height to which the box returns on the ramp?
A sinusoidally varying voltage is represented by V(t) = (75 V)sin(120?t). What are its frequency and peak voltage
A block is given an initial velocity of 5 m/s up a frictionless 20 ° incline. How far up the incline does the block slide before coming (momentarily) to rest.
A 120 gram ball on a 75 centimeter long string is swung in a vertical circle above a point 220 above the floor. Evaluate the tension in the string an instant before it broke
Motor oil, with a viscosirt of 0.250 Ns//m^2, is flowing through a tube that has a radius of 3.00 mm and is 1.00 mm long. What is the average speed of the oil
A nonconducting solid sphere of radius 8.40 cm has a uniform volume charge density. The magnitude of the electric field at 16.8 cm from the sphere's center is 2.21 103 N/C.
Two rocks are thrown off the edge of a cliff that is 15.0 m above the ground. The first rock is thrown upward, at a velocity of +12.0 m/s. The second is thrown downward, at a velocity of 12.0 m/s.
Find the total charge in the sphere. Find an expression for the electric field inside the sphere, a distance V from the center. Find an expression for the electric field outside the sphere, a distance Y from the center.
A particle with a positive charge q= 8.6x10^-6C and a mass m= 0.45g moves with velocity v = 8m/s parallel to a wall. Find the sign and magnitude of the magnetic field
On a summer day in Houston, thetemperature is 35C and the relative humidity is 77%. What is the humidity
A typical household uses 500 kwh (kilo-watt-hours note: the kwh works out to be units of energy if you think about it) of energy in one month. Find how much mass is converted to produce this
A 58 ice cube can slide without friction up and down a 28 slope. The ice cube is pressed against a spring at the bottom of the slope, When the ice cube is released
question1a 52 kg mountain climber starting from rest climbs a vertical space of 730 m. at the top she is again at rest.
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