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A piece of Nichrome wire has a radius of 5.50 10-4 m. It is used in a laboratory to make a heater that uses 3.00 102 W of power when connected to a voltage source of 120 V. Ignoring the effect of temperature on resistance, estimate the necessary length of wire.
To demonstrate the tremendous acceleration of a top fuel drag racer, you attempt to run your car into the back of a dragster that is "burning out" at red light before the start of a race. (Burning out means spinning the tires at high speed to heat..
A partial record of a freely falling body showed only 3 consecutive points. The distance from the first to the second point was 24.550 cm. that from the first to the third was 58.92 cm.
A space traveler weighs 580 N on earth. What will the traveler weigh on another planet whose radius is three times that of earth and whose mass is twice that of earth?
It is possible to produce artificial gravity on a space station by having the station rotate. Explain how this would work. What would be some benefits and drawbacks to this approach?
define what is the unknown capacitance. what focal length eyepiece should she use.
you accelerate your car starting from rest. while the car is increasing its speed, the frictional force acting from the road on the tires? A) directed backword, opposing the motion B)IS directed vertically uo, C) is directed forward, in the direct..
The velocity of the wave traveling on a string is higher if you increase the length of the string (keeping the kind of string, and the tension of the string, unchanged)
Briefly describe: (a) Charging by friction (b) Charging by contact (c) Charging by induction *In one sentence if possible.
What is the total displacement and the angle of displacement
A 4.20 kg sphere makes a perfectly inelastic collision with a second sphere that is initially at rest, What is the mass of the second sphere
Two stationary positive point charges, charge 1 of magnitude 3.10 nC and charge 2 of magnitude 1.74 nC, are separated by a distance of 36 cm. An electron is free from rest at the point midway between the two charges, and it moves along the line con..
The electric potential energy stored in the capacitor of a defibrillator is 58 J, What is the potential difference across the capacitor plates?
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