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Consider a square loop. It has an edge length L = 0.38 m and carries a current I = 7.74 A (runing clockwise). The magnetic field B = 0.28 T is perpendicular to the plane of the loop (downward). What is the magnitude of the torque on the loop?
A defibrillator consists of a 15.3-µF capacitor that is charged to 8.4 kV. What is the average power delivered to the tissues?
In order for Sasha (in A-5) to feel weightless at the top of the ride, a) at what linear speed must the Ferris wheel tum? b) At this speed, how much would she appear to weigh at the bottom of the Ferris wheel.
A stone is thrown vertically downward from a cliff 186.0-m tall. During the last half second of its flight, Find the initial speed of the stone
Why is it better for some purposes to use a medium size telescope on a mountain instead of a telescope in space?
A guitar string is tuned to an E4, The concert pitch standard A440 has a frequency of 440 Hz. What is the wavelength of this pitch in air
A hunter aims directly at a target (on the same level) 140 m away.
Biological muscle cells can be thought of as nanomotors that use the chemical energy of ATP to produce mechanical work. How much work is done by such proteins
The coil of a galvanometer has a resistance of 18.6 ?, and its meter deflects full scale when a current of 6.48 mA passes through it. What is the maximum current that this ammeter can read
A 1500-kW heat engine operates at 25 percent efficiency. The heat energy expelled at the low temperature is absorbed by a stream of water that enters the cooling coils at 20 degrees C. If 60 L flows across the coils per second, determine the incre..
You are traveling on an airplane, The velocity of the plane with respect to the air is 190 m/s due east, What is the speed of the plane with respect to the ground
Kaitlynne is using a magnifying glass (f = 0.098 m) while trying to solder a computer circuit board. find the distance between the glass and the circuit board
The dialectric breakdown of air is approximately 3E6 V/m. This is the electric filed required to create a spark, What is the approximate voltage on the sphere at that instant
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