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A 56 kg student runs at 5.0 m/s, grabs a hanging rope, and swings out over a lake (as shown in the figure below). He releases the rope when his velocity is zero.
(a) What is the angle ? when he releases the rope?
(b) What is the tension in the in the rope just before he releases it?
(c) What is the maximum tension in the rope?
A helicopter, starting from rest, accelerates straight up from the roof of a hospital. The lifting force does work in raising the helicopter. What is the average power generated by the lifting force
Suppose you have a thin, uniform rod with a total mass of 3.00 kg and a total length of 2.00 m. By what percent- age does the moment of inertia decrease if you rotate it about a point located 20% (0.40 m) from one end, instead of at that end?
A sinusoidal transverse wave traveling in the positive direction of an x axis has an amplitude of 1.0 cm, a wavelength of 22 cm, find the speed of the wave
Which of these do you think would allow sound to travel fastest? Explain the answer. Give two reasons - one relating to the density of molecules and the second to the elasticity of your choice - air, water, solid wood. Confirm to specifically stat..
On a workday the average decibel level of a busy street is 65 kb, with 121 cars passing a given point every minute. If the number of cars is reduced to 33 cars every minute on a weekend, what is the decibel level of the street.
Four charged particles are at the corners of a square of side. (Let A = 3, B = 4, and C = 5.) (a) Determine the electric field at the location of charge q.
The press box at a baseball park is 30 ft above the ground. A reporter in the press box looks at an angle of 18 degrees below the horizontal to see second base. What is the horizontal distance from the press box to second base.
As the block has raised a vertical height of 0.725, the tension in the cord is 4.66 .What is the velocity of the bullet originally.
What is current temperature and peak wavelength What is the proper description of their situation
A 7.5 nC charge is located 1.8m from a 4.2 nC charge. Find out the magnitude of the electrostatic force that one charge exerts on the other. Is the force attractive or repulsive.
At t=0 a grinding wheel has an angular velocity of 24.20 rad/s. It has a constant angular acceleration of 24.2 rad/s^2 until a circuit breaker trips at t = 1.2 seconds.
An electron (mass: 9.11x10-31 kg; charge:1.60x10-19 C) moves from location A to location B solely under the influence of conservative forces, what is the speed of the electron at this point
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