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A stone is dropped from the top of a tower 400 m high and at the same time another stone is projected upward vertically from the ground with a velocity of 100 ms -1 . Find where and when the two stones will meet.
The potential at the center of a uniformly charged ring is45 kV, and 15 cm along the ring axis the potential is 33 kV. Find the ring's radius and its total charge.
A running house cat has 13.5 J of kinetic energy at speed "v". What would her kinetic energy be if she ran half as fast as the speed in part A
During the current year it reported net income of $875,000. It had cash provided by operating activities of $734,000, paid cash dividends of $70,000, and had capital expenditures of $280,000. Calculate the company's free cash flow.
Although the evidence is weak, there has been concern in recent years over possible health effects from the magnetic fields generated by electric transmission lines. What is the magnetic field strength on the ground directly under such a transmissi..
A double-convex lens is to be made of a transparent material by an index of refraction of 1.4. One surface is to have twice the radius of curvature of the other and the focal length is to be 50mm. What is the magnitude of the (a) smaller and (b) larg..
a student ate a thanksgiving dinner that totaled 2400 cal. He wants to use up all that energy by lifting a 27 kg mass a distance of 1.0 m. How many times must he lift the mass
A hand pump is being used to inflate a bicycle tire that has a gauge pressure of 36.9 psi. how far down must the piston be pushed before air will flow into the tire
A 2cm x 2cm square loop of wire in the xy plane with resistance .010 ohms has one edge parallel to a long straight wire. What is the current in the loop
question two students with vibrating 440-hz tuning forks walk away from each other with equal speeds. how fast must
1. a batter hits a 0.140-kg baseball that was approaching him at 30.0 ms and as a result the ball leaves the bat at
toby has two vertical hanging springs one on his left l and the other on his right r. he hangs his left shoe on spring
The hot resistance of a flashlight bulb is 1.90, and it is run by a 1.37-V alkaline cell having a 0.100-? internal resistance. 685A Calculate the power supplied to the bulb. in watts
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