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If 61.4 cm of copper wire (resistivity = 1.69x 10-8Ω•m, diameter = 0.943 mm) is formed into a circular loop and located perpendicular to a uniform magnetic field that is increasing at the constant rate of 12.6 mT/s, find at what rate is thermal energy generated in the loop?
A bicyclist rides 3.01 km due east, while the resistive force from the air has a magnitude of 7.71 N and points due west. Find the work done by the resistive force during the round trip
calculate the diameter of a disk 10 centimeners thick required to store 1 megajoule of energy if this disk is rotating
A particle moving north with a speed of 5600 m/s in a uniform magnetic field pointing upward with a strength of 0.42 T feels a force of 230 N toward the east
How many nitrogen molecules must strike a 1 cm2 surface each second to exert a pressure of 1 atm (Assume that the molecules are all moving at the same speed, at a temperature of 300K, and 45 degree angle to the wall).
The equation of a transverse wave on a string is given by the formula below. Find the linear density of this string in grams per meter
A 2 kg mass, attached to a string, is on a frictionless surface and moves in a horizontal circle. At what speed will the string break
Six pendulums of mass and length are released from rest at the similar angle from vertical. Rank the pendulums according to the number of complete cycles of motion each pendulum goes through per minute.
Three blocks with masses m1=5kg, m2=10kg and m3=7kg are connected by two pieces of very light strings. Find the tensions in both pieces of string
A 300kg piano is being lowered into position by a crane while two people steady it with ropes pulling to the sides. What is the tension in the vertical main cable supporting the piano
A bugle is simply a tube of fixed length that behaves as if it werean open organ pipe. (open at both ends) A bugler, by adjusting his lips correctly and blowingwith proper air pressure, can cause a harmonic (usually other than the fundamental) of ..
q1. an artillery shell is fired with an initial velocity of 370 ms at 76deg above the horizontal. to clear an avalanche
A common flashlight bulb is rated at 0.270 A and 3.36 V (the values of current and voltage under operating conditions). estimate the temperature of the tungsten filament when the bulb is turned on
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