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In 9.5 s a fisherman winds 2.1 m of fishing line onto a reel whose radius is 3.0 cm (assumed to be constant as an approximation). The line is being reeled in at a constant speed. Determine the angular speed of the reel.
A lens for a 35mm- camera has a focal length given by = 40mm, What is the magnification of the image on the film
find the tension in the wire.Find the maximum height above the ground reached by the package.
On a clear day at a certain location, a 150-V/m vertical electric field exists near the Earth's surface. At the same place, the Earth's magnetic field has a magnitude of 4.800 10-5 T. Compute the energy density of the electric field.
a uniform current density of 2.0 ampsm2 is flowing down a cylindrical region of radius 3.0 meters.a use amperes law to
The lob in tennis is an effective tactic when your opponent is near the net. It consists of lofting the ball over his head, forcing him to move quickly away from the net (see the drawing). Suppose that you lob the ball with an initial speed of 17...
a rubber ball dropped from a height of 2 bounces back to a height of 1. draw the balls position and velocity graphs
Find out the object position p for the image to be erect and 7 times the size of the object. Focal length is 46 cm.
two narrow slits 58 microm apart are illuminated with light of wavelength 540 nm. what is the angle of the m 2 bright
A baseball approaches home plate at a speed of 46.0 m/s, moving horizontally just before being hit by a bat. What is the average vector force the ball exerts on the bat during their interaction
a. a lever is used to lift a heavy load. when a 40 n force pushes one end of the lever down 2.2 m the load rises 0.8 m.
A projectile is shot from the edge of a cliff h = 105 m above ground level with an initial speed of v0 = 145 m/s at an angle of 37.0° with the horizontal. Find the maximum height above the cliff top reached by the projectile
In fair weather, over flat ground, there may be a downward electric field of 155 N/C. (a) Assume that the Earth is a conducting sphere with charge on its surface.
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