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A bowling ball weighing 71.2{\rm N} is attached to the ceiling by a 3.70{\rm m} rope. The ball is pulled to one side and released; it then swings back and forth like a pendulum. As the rope swings through its lowest point, the speed of the bowling ball is measured at 4.40{\rm m}/{\rm s} .
A. At that instant, find the tension in the rope.
A particular heat engine has a useful power output of 4.90 kW and an efficiency of 27.0%. In each cycle, Find the time interval for each cycle
Suppose a chimpanzee swings through the jungle on vines. If it swings from a tree on a 13 m long vine that starts at an angle of 45 degrees, what is the chimp's velocity when it reaches the ground.
A planet of mass 6.00 1025 kg is in a circular orbit of radius 2.00 1011 m around a star. The star exerts a force on the planet of constant magnitude 5.03 1023 N. The speed of the planet is 4.09 104 m/s. All through this half "year", how much work is..
An amount of ideal gas is con?ned to a sealed box at one-half atmospheric pressure, i.e., 50.65 kPa. With clever control, the volume of the box is reduced to 1/8 of its original value (without any gas leaking in or out), while the temperture is ke..
An ideal gas has a pressure of 2.0 atm and temperature 27 degrees celcius. what is the volume of this gas
Consider the driven, damped harmonic oscillaror discussed. (a) Calculate the power dissipated by the damping force. (b) Calculate the average power loss, using the fact that the average of sin2( ?t+?) over a cycle is one-half.
A solid circular disk has a mass of 1.2 kg and a radius of 0.12 m. Each of three identical thin rods has a mass of 0.16 kg. Find the moment of inertia of the stool
Find out the tension in the strap; given that the suitcase moves with constant speed and that the coefficient of kinetic friction between the suitcase and the floor is 0.40.
Assume that the blocks accelerate as shown with an acceleration of magnitude a= 0.550 m/s^2 and that the coefficient of kinetic friction between block 2 and the plane is μ= 0.400. Find out the mass of block 2, m2, when θ= 30.0.
A football player carrying the ball runs straight ahead at the line of scrimmage and directly into a wall of defensive linemen. Find the magnitude and direction of his average acceleration
A construction worker accidentally drops a brick from a high scaffold. What is the velocity of the brick after 4.0 s
Suppose that a disk rotates through two revolutions in 4.2 seconds. What is its displacement in radians in this time
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