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A 1.53 kg ball is attached to a ceiling by a 3.06 m longstring. The height of the room is 5.12 m. The acceleration of gravity is 9.8 m/s2.
What is the gravitational potential energy associated with the ball relative to the ceiling? Answer in J.What is the gravitational potential energy relative to the floor? Answer in J.What is its gravitational potential energy relative to a pointat the same elevation as the ball? Answer in J.
an electron moving with a velocity of 2.7 x106 ms in the positive x direction enters a region where there is a uniform
A projectile is fired at 67.5 o above the horizontal. Its initial speed is equal to 90.0 m/s. evaluate the maximum height reached by the projectile
In many cars, the passenger's side mirror has the following warning "Objects in mirror are closer than they appear" embossed on the mirror surface. What is focal length of passengers mirror
A hollow plastic sphere is held below the surface of a freshwater lake by a cord anchored to the bottom of the lake. find the buoyant force exerted by the water on the sphere
Find the maximum current in a series circuit with a 25.0 mH inductor and an AC generator with an output rms voltage of 78.0 V
If the rope tension is 120 N, and if the rope does 2500 J of work on the box, what angle theta does the rope make with the horizontal
The International Space Station, launched in November 1998,makes 15.65 revolutions around the earth each day in a circularorbit. Apply Newton's second law to the space station and find itsheight (in kilometers) above the earth's surface.
A hiker is wearing wool clothing of 0.40 cm thickness to keep warm. Her skin temperature is 39° C and the outside temperature is 8.0° C. what is the rate of heat conduction through her clothing
A 2.93-kg model rocket is launched vertically upward with sufficient initial speed to reach a height of 3.71·102 m, even though air resistance (a nonconservative force) performs -6.11·102 J of work on the rocket.
information is transmitted along a cable in the form of short electric pulses at 100000 pulsessecond. a what is the
A 20lb weight is suspended from the end of a vertical spring of negligible mass. This much weight stretches the spring by 6nches. It is then pulled 2 inches down and released.
You are visiting a friend in the hospital and realize someone is following you. If you hare 2.50 m from the mirror and the focal length of the mirror is 75.0 cm, how far is the stalker really from you
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