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A) Find the resistance in ohms of an aluminum wire that is 15 m long and has diameter 0.0025 m.
B) Suppose the current in the wire causes the temperature of the wire to increase 20 degrees
C. What is the new resistance of the wire?
a support cable runs from the top of the boom to the tractor. The angle between the support cable and the horizontal is 32°, and the angle between the boom and the horizontal is 48°.
Assume a uniform mass distribution before and after. Icm for a solid sphere of uniform density is 2/5 mr2.
We have a container of compressed air. Assume that air is a diatomic ideal gas. The volume of the container is 1.35 liters. Find the final volume of the gas
A refrigerator has a 1000 W compressor, but the compressor runs only 20% of the time, If electricity costs $0.10/kWh, what is the monthly (30 day) cost of running the refrigerator
A thin copper rod 1 m long has a mass of 50 g. What is the minimum current in the rod that would allow it to levitate above the ground in a magnetic field of magnitude 0.100 T.
A battery having an emf of 11.10 V delivers 102 mA when connected to a 61.0 load. Find out the internal resistance of the battery.
A person walks 34.0? north of east for 4.10 km. Another person walks due north and due east to arrive at the same location. How large is the east component of this second path?
A set of crash tests consists of running a test car moving at a speed of 13.0 m/s (28.6 m/h) into a solid wall. Calculate the size of the average force which acts on the dummy during that time
The magnitude FN of the normal force that each side of the tread channel exerts on the stone is 1.8 N. Suppose that only static friction supplies the centripetal force, & find the radius r of the tyre.
How far below the release point is the center of mass of two stones at t = 550 ms? (Neither stone has yet reached the ground.)
Determine the mass of a 4.6 meter beam, if it is balanced on a fulcrum 2.16 meters from the left end. A 820 N man stands on the very left end
What is the average speed in m/s of nitrous oxide molecule when the temp is 300K? The molar mass of oxygen is 0.032 kg/mol
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