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Q. A door of width 1.01 and height 2.03 weighs 279 and is supported by two hinges, one a distance 0.500 from the top and the other a distance 0.500 from the bottom. Each hinge supports half the total weight of the door.
Q. Two strings, one having linear density and length L1, the other having linear density 3 and length L2, are tied at a knot shown by the "X", and the ends are attached to walls as shown. The strings are held under the same tension. The total length of the strings is 4 m. A physics student plucks the knot, sending waves traveling towards the walls. What must lengths L1 and L2 be if the waves reach the walls at the same time.
A rocket is fired at a speed of 75.0 m/s from ground level, at an angle of 60.0 degrees above the horizontal. The rocket is fired toward the ground 11.0-m high wall, which is located 27.0 m away. By how much does the rocket clear the top of the wa..
Two speakers, one straight behind the other, are each generating a 285 Hz sound wave. What is the smallest separation distance between the speakers that will produce destructive interference at a listener standing in front of them? Suppose that the s..
An electron is accelerated by a 4.5 kV potential difference. How strong a magnetic field must be experienced by the electron if its path is a circle of radius 5 cm.
Find out kinetic energy of the merry-go-round
What magnetic field strength produced by Helmholtz coils
A helium-neon laser intended for instructional use operates 7.5 mW. Find out the maximum value of the electric field at a point where the cross sectional area of beam is 10 mm.
Calculate the shear stress of the crude oil at the walls, and plotting the velocity distribution graph for the same.
A 54 {rm kg} ice skater spins about a vertical axis through her body with her arms horizontally outstretched, making 2.5 turns each second. The distance from one hand to other is 1.5 {rm m}. Biometric measurements indicate that each hand typically..
Agree on the mass of the earth knowing that the mean radius of the moon's orbit about the earth is 248,910 mi and that the moon requires 28.32 days to complete one full revolution about earth.
A hunter aims directly at a target (on the same level) 84.2m. If the bullet leaves the gun at a speed of 193 m/s, by how much will it miss the target.
The stairs are 83 long and inclined at the angle of 31. If a player has a mass of 87, estimate his average power output on the way up. Overlook friction and air resistance.
The speed of light in a transparent medium (such as glass) is less than the speed of light in a vacuum. Is this a violation of the theory of relativity.
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