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A 2-kg solid sphere and a 2-kg solid cylinder are held at rest 5-m up an incline of 42 degrees.Both have a radius of 0.125-m. Assuming that the sphere and the cylinder roll down the incline without slipping, what speed will they have upon reaching the bottom of the incline. I(solid sphere)=(2/5)mr^2 I(solid cylinder)=(1/2)mr^2.
A speedboat moving at 33.0 m/s approaches a no-wake buoy marker 100 m ahead. The pilot slows the boat with a constant acceleration of ?3.20 m/s2 by reducing the throttle. (a) How long does it take the boat to reach the buoy? (b) Find the total tim..
A 69.0 kg person throws a 0.0400 kg snowball forward with a ground speed of 35.0 m/s. What are the velocities of the two people after the snowball is exchanged
A proton moving at 7.20 106 m/s through a magnetic field of magnitude 1.74 T experiences a magnetic force of magnitude 7.40 10-13 N. What is the angle between the proton's velocity and the field
An electron is released from rest at the point midway between the two charges, and it moves along the line connecting the two charges. What is the speed vfinal of the electron
Astronomers discover an exoplanet (a planet of a star other than the Sun) that has an orbital period of 3.35 Earth years in its circular orbit around its sun, Find the radius of the exoplanet\'s orbit
A 1000-kg rocket has a net propulsion force of 20 kN (kiloNewtons). What is the net work done on the rocket in kilojoules (kJ)
a light ra reflects from a mirror hanging vertically on a wall in your bathroom, and the ray strikes a particular point on the opposite wall. what is the length L of the room
Light from a sodium lamp (= 589 ) illuminates two narrow slits. What is the spacing between the two slits
why do you only report 2 sigfigs when calculating freezing point
A car of mass 1200 kilogram is traveling at 28.0 m/s. Determine the retarding force acting on the car
A proton moving at 3.000 * 10^4 m/s is projected at an angle of30.00 degrees above a horizontal plane. If an electric fieldof 400.0 N/C is directed downwards, how long does it take the proton to return to the horizontal plane. Ignore the effectsof gr..
a block is pushed across a rough horizontal surface by a horizontal force of magnitude P= 25 . The coefficient of kinetic friction between the block and the ground is 0.3 if the blck started from rest
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