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A helicopter blade has an angular speed of 6.50 rev/s and an angular acceleration of 1.30 rev/s^2. Find the magnitudes of the tangential speed and acceleration for a point (a) 3.00m from the center of rotation and (b) a point on the blade 6.70 m from the center of rotation.
Starting from rest, a 12-cm-diameter compact disk takes 2.6s to reach its operating angular velocity of 1600rpm. How much torque is applied to the disk
A lightning bolt consisting of electrons moves from the cloud to the ground near the equator. What direction is the bolt deflected by the Earth's magnetic field
A tennis ball with a speed of 11.9 m/s is thrown perpendicularly at a wall. what is the average magnitude of acceleration of the ball while it is in contact with the wall
A football is kicked at ground level with a speed of 15.0 m/s at an angle of 37.0° to the horizontal. How much later does it hit the ground
A simple pendulum consists of a small object of mass 3.0 kilogram hanging at the end of 2.0 meter long light string that is connected to a pivot point. Obtain the magnitude of the torque (due to the force of gravity) about this pivot point
A block of mass m1 = 21.5kg and a block of mass m2 = 5.50kg are connected by a massless string over a pulley in the shape of a solid disk having radius R = .250m, Determine the acceleration of the blocks
A single slit is illuminated with 660nm light, and the resulting diffraction pattern is viewed on a screen 2.3 m away. If the linear distance among the first and the second dark fringes of the pattern is 12 cm, what is the width of the slit?
A 23 kg boom of length 6 m is supported by a cable that has a breaking tension of 1200N. The cable is perpendicular to the boom and is attached 4.5m from the pivot. What is the utmost load that can be suspended from the end of the boom.
question a rectangular piece of paper is folded so that one corner lands on the opposite corner. the crease is as long
a 5-kg block is sent sliding across a frictionless table at a speedof 0.75 ms. it strikes the free end of an ideal
Each croquet ball in a set has a mass of .50kg. The green ball travels at 10.5m/s and strikes a stationary red ball. what is the final speed of the red ball after the collision
Lightbulbs with the power ratings giving in the figure are connected in a circuit as shown. Find the power dissipated to each bulb
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