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A 26 Newton block rests on a horizontal surface. The coefficients of kinetic and static friction between the surface and the block are 0.4 and 0.7, correspondingly. A horizontal string is attached to the block and a constant tension is maintained in the string.
Find the force of friction acting on the block if the tension is14 Newton?
Find the force of friction acting on the block if the tension is 35 Newton?
the index of refraction for red light in water is 1.331 and that for blue light is 1.340. what are the underwater angles of refraction for the blue and red components of the light
A circuit consists of an ideal ac generator, a 25 µF capacitor, and an 90? resistor, all connected in series. Find the average power supplied by the generator
a wave travels along a string at a speed of 280 ms. what will be the speed if the string is replaced by one made of the
A flywheel in a motor is spinning at 530 rpm when a power failure suddenly occurs. The flywheel has mass 40.0kg and diameter 75.0cm. how many revolutions would the wheel have made during this time
Draw the circuit with the following criteria; double acting cylinder used for broaching holes into metal plates. The cylinder is 24" long mounted vertically, What is the minimum horsepower required by the prime mover
A 150-gm ball is attached to a 3-m long string to form apendulum. The pendulum is pulled until it forms an angle of 45degrees with the vertical. calculate its maximum speed after it was released
Olaf is standing on a sheet of ice that covers the football stadium parking lot in Buffalo, New York; there is negligible friction between his feet and the ice. what is his speed after the collision
A farm boy studying physics believes that he can fit a 15.0m long pole into a 12.0m long barn if he runs fast enough, How does this fit with the idea that when he is running the barn looks even shorter to him than 12.0m
A 3.18-nF parallel-plate capacitor is charged to an initial potential difference ?Vi = 100 V and is then isolated. How much work is required to withdraw the porcelain sheet
You are studying standing sound waves in an organ pipe of length L with both ends open, What is the frequency of the musical tone produced by the organ pipe in the situation described in part b
A 0.26 kg rock is thrownvertically upward from the top of a cliff that is 33 m high. Assuming thatair resistance can be ignored, find the initial speed of the rock
A crate is sliding down a ramp that is inclined at an angle of38.0o above the horizontal. Find the acceleration of the moving crate
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