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A 1kg block at the bottom of a ramp is on a compressed spring with the spring constant k=300N/m. The spring is intitially compressed 5cm. If the coefficient of friction with the ramp is 0.1 and the angle of the ramp is 30 degrees, what is the initial acceleration of the block up the ramp? Be careful with the direction of friction.
Water flows at 0.25L/s through a 7.0-m-long garden hose 2.0cm in diameter that is lying flat on the ground. What is the gauge pressure of the water where it enters the hose
A coil is placed in a changing magnetic field and an emf is induced. What happens to induced emf if the rate of change of magnetic field quadruples.
A 79, 37--long rod hangs vertically on a frictionless, horizontal axle passing through its center. A 13 ball of clay travelling horizontally at 2.6 hits and sticks to the extremely bottom tip of the rod.
How fast should a car move toward you for the car's horn to sound 2.88% higher in frequency than as the car is stationary? The speed of sound is 343 m/s.
if the magnitude of the force between two identical 100. microcoulomb negative charges is 9N. How far apart are the charges
A function generator with output V(t) = 12cos(500t)V is connected with a resistor R = b15?, What is the maximum current passing through the resistor
A rectangular plate has a length of (20.4 0.2) cm and a width of (8.7 0.1) cm. Calculate the area of the plate
Two 5.5 5.5 metal plates are separated by a 0.21--thick piece of Teflon. compute the maximum potential difference between the disks
What is the resistance of the light bulb? A light bulb is wired in series with a 120-? resistor, and they are connected across a 120.0-V source
Two conductors are made of the same material and have the same length. Conductor A is a solid wire of diameter 1.5 mm. What is the resistance ratio RA/RB, measured between their ends
A device known as Atwood\'s machine consists of two masses hanging from the ends of a vertical rope that passes over a pulley. Assume the rope and pulley are massless and there is no friction in the pulley.
What is diameter of the circle
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