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Consider the conical pendulum, a mass on the end of a string, with the other end of the string fixed to the ceiling. Given the proper push, this pendulum can swing in a circle at an angle ? of 31o with respect to the vertical, maintaining the same height throughout its motion. If the mass of the pendulum M is 15 kg, and the length of the string L is 2.5 m, what is the speed (in m/s) of the mass as it swings?
When pulling a mass hanging from a spring at a constant rate down then releasing it so it bobs up and down, what is its maximum amount of kinetic energy
q1. suppose the gravitational force between two massive spheres is 100 n. if the distance between the spheres is
Block A, with a mass of 2.4 kg, is stationary, while block B, with a mass of 8.6 kg, is moving at 8.1 m/s. What is the speed of the center of mass of this two-block system
A rock is thrown vertically upward with a speed of 17.0 m/s from the roof of a building that is 70.0 m above the ground. Assume free fall. What is the speed of the rock just before it strikes the ground
The Royal Gorge bridge over the Arkansas River is 310 m above the river. A 61-kg bungee jumper has an elastic cord with an unstressed length of 60 m attached to her feet. Assume that, Find the maximum speed of the jumper
A device used in radiation therapy for cancer contains 0.83 g of cobalt-60 (59.933 819 u). The half-life of this isotope is 5.27 yr
A battery with a 12-V EMF has a terminal voltage of 11.4 V when it delivers 20A to the starter of a car. How much energy is dissipated per unit time by internal resistor
Incoming UNPOLARIZED light of intensity 17 LUX passes through a linear polarizer, with its transmission axis oriented vertically. Calculate the final intensity of the light after it has passed through both polarizers
A 60 (g} tennis ball with an initial speed of 32 {m/s} hits a wall and rebounds with the same speed. The figure shows the force of the wall on the ball throughout the collision.
A waterpipe of radius 0.02 m delivers water at a flow rate of 0.01m^3/ s^1 at 20 degrees C. What is the average velocity of the water
Find out the magnitude of that push.
A person bounces up and down on a trampoline, while always staying in contact with it. What is the maximum speed attained by the person
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