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A tungsten wire has a radius of 0.070 mm and is heated from 20.0 to 1416 oC. The temperature coefficient of resistivity is ? = 4.5 x 10-3 (Co)-1. When 180 V is applied across the ends of the hot wire, a current of 1.0 A is produced. How long is the wire? Neglect any effects due to thermal expansion of the wire.
What is the total work W_fric completed on the block by the force of friction as the block moves a distance 8 rm m up the incline.
If the surface of the water is calm and the pool is h = 1.52 m deep, find out the minimum diameter of the raft that would prevent the diamond from being seen.
Assume air resistance is negligible; from what height (in cm) above the compressed spring was the block dropped.
A car was seen driving off the edge of a cliff at an angle of 10 ° above the horizontal. The cliff is 95m high and the car impacted the ground at a distance of 156m from the base of the cliff. What is the speed of the car.
What is the mass of the rim.
A worker on a scaffolding 65 ft above the ground needs to lift a 390 lb bucket of cement from the ground to a point 30 ft above the ground by pulling on the rope weighting 2 lb/ft . Set up the integral of how much work is required (just give the i..
An ideal gas is compressed at constant pressure to one-half its initial volume. a)If the pressure of the gas is 150kPa , and 770J of work is done on it, find the initial volume of the gas.
Find the force on each side of the loop and the torque acting on loop.
After that, specify which muscles are pulling on which bones and what type of joints is involved in lifting the glass. (Part two) at last, trace the path of the water from the mouth to the urethra, detailing gastrointestinal and renal / urinary an..
An initially motionless test car is accelerated uniformly to 145km/h in 8.28s before striking a simulated deer. The car is in contact with the faux fawn for .815s, after which the car is measured to be traveling at 82.0km/h. What is the magnitude ..
What is the total negative charge, in coulombs, of all the electrons in a small 1.05g sphere of carbon? One mole of C is 12.0g, and each atom contains 6 protons and 6 electrons.
How much energy was added to accomplish the transformation. What force must be exerted on the smaller piston to support the load.
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