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Discussion: Forces on Strands of Wire
Question: High-voltage power is often carried in wire bundles made up of individual strands. In your initial post to the discussion, discuss the forces on the strands of wire due to the current flowing through them. What would happen if the force acted the opposite of its known behavior? Provide a detailed description.
A capacitor is connected in series with a resistor and a switch. With the switch open, the capacitor is charged to 9.0 V. When the switch is closed, how long will it take for the voltage across the capacitor to drop to 6.0 V if the time constant of t..
Running on a treadmill is slightly easier than running outside because there is no drag force to work against. Determine the drag force on the runner during the race
A diver releases an air bubble of volume 2.9 cm3 from the depth of 18 m below the surface of a lake, where the temperature is 7.2°C. What is volume of the bubble when it reaches just below the surface of the lake, where the temperature is 22°C.
Two resistances, one 62? and the other 88?,are connected in parallel. The resistors are then connected to a 12-V battery. a. What is the equivalent resistance of the parallel combination?
Consider a thin, uniform rod of mass m and length L (and negligible other dimensions) lying on the x axis (from x=-L to 0). Derive a formula for the gravitational ?eld “g” at any arbitrary point x to the right of the origin (but still on the x-axi..
To practice Problem-Solving Strategy 5.2 Dynamics problems. A 30.0kg- box is being pulled across a carpeted floor by a horizontal force of 230N, What is the acceleration of the box
Pushing on the pump of a soap dispenser compresses a small spring. When the spring is compressed 0.45 {\rm cm}, its potential energy is 0.0030 {\rm J}. Find the distance through which the strip is flexed
Water is being sprayed from a nozzle at the end of a garden hose of diameter 2.0 cm. what is the speed of the water inside the hose
Light of frequency 6.00 x 1014 Hz illuminates a soap film (n=1.33) having air on both sides of it. When viewing the film by reflecting light, What is the minimum thickness of the film
While driving on the (straight) highway at a constant speed v0, significantly above the speed limit, you pass in front of a parked police car without noticing it. After a few seconds, during which time you have moved a distance d, the police car s..
A community plans to build a facility to convert solar radiation to electrical power. They need 3.00 MW of power, and the system to be installed has an efficiency of 30.0% (that is, 30.0% of the solar energy incident on the surface is converted to us..
Each second, a nuclear power plant generates 2000 MJ of thermal energy from nuclear reactions in the reactor's core. What is the maximum possible thermal efficiency of the power plant
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