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Consider a block on an incline plane of angle 300, with a force F, applied at an angle a with respect to the horizontal as shown. The coefficient of static friction μs between the block and incline is 0.25. What angle a minimizes the amount of force, F needed to put the block on the verge of slipping? (Draw a free body diagram of all the forces in your solution).
A bullet with mass 12.5 g and speed 94.9 m/s is fired into a wooden block with a mass of 113 g which is initially at rest on a horizontal surface. What is the speed of the block-bullet system immediately after collision
We have a 1-D periodic structure made of alternating layers with their index of refraction being n1 and n2. Derive the time-independent wave equation
Four point charges are at the corners of a square of side a as shown in the figure below. Determine the magnitude and direction of the resultant electric force on q, with ke, q, and a left in symbolic form. (B = 1q and C = 5q. Let the +x-axis be poin..
A capacitor is charged to a potential of 12.0 V and is then connected to a voltmeter having an internal resistance of 3.30M. After a time of 3.90s the voltmeter reads 3.2V. What is the capacitance? What is the time constant of the circuit?
You are on a train traveling east at speed of 28.0 m/s with respect to the ground. what is your velocity with respect to your friend
Calculate the mass of ice required to reach a final state of all liquid water at 0.00 degrees celsius. Assume no heat is gained or lost to the surroundings.
Consider a string with length 36 cm. The two ends are attached to the ceiling, separated by distance 30.0 cm. Determine the tension in the right segment of the string
A circular loop of flexible iron wire has an initial circumference of 165cm , but its circumference is decreasing at a constant rate of 12.0 cm/s.
(a) Calculate the approximate rms speed of an amino acid whose molecular mass is 89 u in a living cell at 38°C.
the bent rod is supported at a b and c by smooth journal bearings. determine the magnitude of f2 which will cause the
You determine that it takes 400 days for the planet to make one orbit around the star. One scientist says that the planet has to have semi-major axis that is greater than 1 AU. Another scientist corrects him and says that it is possible for the ..
Its initial position is x0= 2 meter at t0=0 second. At t=2 second, Find the particle velocity and the particle acceleration
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