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Assume you wish to make a solenoid whose self-inductance is 3.0 mH. The inductor is to have across sectional area of 1.20 x 10-3 m2 and a length of 0.053 meter. Determine how many turns of wire are needed?
What is the acceleration at the top of a jump?
A student sits on a stool that is free to rotate about a vertical axis. He holds his arms extended horizontally with a 4.0-kg dumbbell in each hand. Find the final angular speed of the student
A satellite rocket weighing 200,000 N acquires a speed of 2000 m/s in 1 minute after launching. What is its kinetic energy one minute after launching
a cessna aircraft has a lift-off speed of 120 kmh.a what minimum constant acceleration does the aircraft require if the
A particle undergoes two displacements. The first has a magnitude of 119 cm and makes an angle of 106 degrees with the positive x axis. The resultant displacement has a magnitude of 111 cm and is directed at an angle of 37.7 degrees to the positive x..
some asteroid is a whoping 2 x106km from planet earth. it moves at speed of 10 kms. without gravitation pull this
Magnetic resonance imaging needs a magnetic field strength of 1.5 T. The solenoid is 1.8 m long and 75 cm in diameter. It is tightly wound with a single layer of 1.70-mm-diameter superconducting wire.
A 497-turn solenoid has a radius of 8.75 mm and an overall length of 12.4 cm. If the solenoid is connected in series with a 2.50-? resistor and a battery, what is the time constant of the circuit
Some enterprising physics students working on a catapult decide to have a water balloon fight in the school hallway. At what angle must they be launched to just graze the ceiling
An 8m, 200 N uniform ladder rests against a smooth wall. The coefficient of static friction between the ladder and the ground is 0.55, and ladder makes a 50.0° angle with the ground. How far up the ladder can an 800 N person climb before the ladde..
a dock worker applies a constant horizontal force of 78.0 to a block of ice on a smooth horizontal floor. the
What is the spring constant (k) of the bungee cord.At what time will the object be moving with a speed of 15 m/s.
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