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Suppose a block with mass 2.80 kg is resting on a ramp. If the coefficient of static friction between the block and the ramp is 0.440, What is the new coefficient of static friction if the maximum angle turns out to be 39.7°? Find the maximum static friction force that acts on the block?
The minute hand of a wall clock measures14 cmfrom its tip to the axis about which it rotates. find angle from a quarter after the hour to half past
For an electromagnetic wave propagating in sodium, Determine the penetration depth for 10^6, 10^15, and 2*10^15 Hz
A laser that produces a spot of light that is 1.20 mm in diameter is shone perpendicularly on the center of a thin, what is the power of the laser
A street lamp weighs 180 N. It is supported by two wires that form an angle of 150° with each other. The tensions in the wires are equal.
That is the sound from the organ bounces back and forth off the church walls many times before the sound inentsity decays away completely. If the reverberation time is 10s and the church has the approximate shape
A ball is attached to one end of a wire, the other end being fastened to the ceiling. The wire is held horizontal, Find the velocity (magnitude and direction) of the ball
Nichrome wire of cross-sectional radius 0.753 mm is to be used in winding a heating coil, Find the required resistance of the coil
A spherical cavity of radius 4.31 cm is at the center of a metal sphere of radius 15.0 cm, Determine the electric field at a point 3.06 cm from the center of the cavity
Two large identical flat metal plates are placed parallel to one another, seperated by a small distance compared to their linear size. One plate is given a charge per unit area 1.80E-5 C/m2 and the other a charge per unit area -1.80E-5 C/m2. Using..
An electromagnetic wave in a vacuum has a magnetic field with a magnitude of 1.4 10-6 T. What is the intensity S of the wave
A battery in a circuit has an emf of 8.8 V. The only other component in the circuit is a resistor. 4.4 A of current flows in the circuit. What is the potential difference across the battery
A 9820 kg sailboat is moving through the waters of the Atlantic. Initially, the boat is traveling at 20 mph, 29 degrees East of North. What is the net force (Fnet) acting on the boat
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