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A 44-kg girl is bouncing on a trampoline. During a certain interval after leaving the surface of the trampoline, her kinetic energy decreases to 230 J from 410 J. How high does she rise during this interval? Neglect air resistance.
A cubic metal box with sides of 18 cm contains air at a pressure of 1 atm and a temperature of 311 K. Find the force due to the internal air pressure on each wall
A bead of mass m is restricted to slide on a frictionless wire. The wire lies in a vertical plane and has the shape described by the equations
a model rocket launches with an initial velocity of 6 ms at an angle of 77 degrees with respect to the horizon. the
A 199.9 kg satellite is in a circular orbit of 26,273 miles (42,300,000 m) in radius. What is the velocity (speed) of the satellite
A relief airplane is delivering a food package to a group of people stranded on a very small island. The island is too small for the plane to land on, and the only way to deliver the package is by dropping it. What is the speed of the package when ..
question a force of 75n is applied horizontally to a box of mass 10kg moving with an initial speed of 4ms on a level
a generator is designed to produce a maximum emf of 170 v while rotating with an angular speed of 3600 rpm. each coil
illustrate what is the magnitude of the acceleration of the box and hanging mass.
A certain brand of hotdog cooker works by applying a potential difference of 142 V across opposite ends of a hot dog and allowing it to cook by means of the thermal energy produced.How much electrical energy is transferred to thermal energy.
A radio receiver can detect signals with electric field amplitudes as small as 250?V/m. What is the intensity of the smallest detectable signal
You want to take a full-length photo of your friend who is 2.00m tall, using a 35.0mm camera having a 50.0mm lens. How far should your friend stand from the lens
An electron with kinetic energy of 6.0 x 10-16 J is moving to the right along the axis of a cathode-ray tube. There is an electric field vector = (2.0 x 104 N/C) j in the region between the deflection plates.
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