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A standard 100 (120 ) lightbulb contains a 7.80 -long tungsten filament. The high-temperature resistivity of tungsten is . What is the diameter of the filament? A 3.4--diameter wire carries a 20 current when the electric field is 5.1×10?2 . What is the wire's resistivity? The terminals of a 0.300 watch battery are connected by a 120 gold wire with a diameter of 0.100 . What is the current in the wire? The resistance of a very fine aluminum wire with a 17 17 square cross section is 1100 . A 1100 resistor is made by wrapping this wire in a spiral around a 2.7--diameter glass core. How many turns of wire are needed? A typical American family uses 700 of electricity a month. What is the average current in the 120 power line to the house? On average, what is the resistance of a household?
The drawing shows a block at rest on an incline. What is the static frictional force that acts on the block
A motorist drives south at 28.0 m/s for 3.00 min, then turns west and travels at 25.0 m/s for 2.20 min, find the total vector displacement
The end milling cutter has two teeth and its diameter = 15.0mm. Find out the feed rate and time to complete the cut.
a 100 Watt electric light bulb is plugged into 120 Volt, 60 HZ AC voltage source. What is the peak current in the bulb
An air traffic controller has two aircraft on radar. The first is at an altitude of 0.5 km, a horizontal distance of 3 km measured along the ground to the point directly underneath the plane, and a bearing of 115° west of north.
Two free point charges +q and +4q are a distance l apart. Find the location, magnitude, and sign of the third charge
Two spheres are cut from a certain uniform rock. One has radius 4.30cm. The mass of the other is six times greater. Find its radius.
Describe the process of fission, the products resulting from fission, and the fate of the different neutrons resulting from fission
A loudspeaker of mass 19.0 kg is suspended a distance of h = 2.00m below the ceiling by two cables that make equal angles with the ceiling. Each cable has a length of l= 3.50m. Illustrate what is the tension T in each of the cables?
A glass soda bottle is emptied of soda and filled to the very top with water. A cork is carefully fitted into the top of the bottle, leaving no air between the cork and the water.
A spring with 58 hangs vertically next to a ruler. The end of the spring is next to the 11- mark on the ruler. If a 2.5- mass is now attached to the end of the spring, illustrate where will the end of the spring line up with the ruler marks?
A screen is placed 1.0 meter away from the slits. Initially, you measure the interference pattern from the 2 slits on the screen. You then place the guanine film directly behind one of the slits, Determine the thickness of the guanine film
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