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Nichrome wire of cross-sectional radius 0.791 mm is to be used inwinding a heating coil. If the coil must carry a current of 9.25 Awhen a voltage of 1.20 x 102 V is applied across itsends, find:
a) the required resistance of the coil and
b) the length of wire you must use to wind the coil.
An object moves uniformly around a circular path of radius 20.5 cm, making one complete revolution every 2.40 s. What is the translational speed of the object
In a friendly game of handball, you hit the ball essentially at ground level and send it toward the wall with a speed of 15 m/s at an angle of 32° above the horizontal. How long does it take for the ball to reach the wall if it is 4.2 m away
An object moves according to x = 3 m e^(-2/s t), y = 4 m sin(3/s t), z = -5 m cos(3/st) . a. Find its velocity. b. Find its acceleration. Note: s is seconds ex:-2/s means -2 per second and m is meters
why must a water skier moving with constant velocity lean backwards? what determines how far back she must lean? draw a
An iron wire has a cross-sectional area equal to 3.50x10^-6 m2. Carry out the following steps to determine the drift speed of the conduction electrons in the wire, Calculate the drift speed of conduction electrons in this wire
two resistors one of 5 ohms and the other of 3 ohms are connected in series to a 6v battery. a what is the resistance
Consider an elastic collision in one dimension that involves objects of mass 2.7 kg and 4.3 kg. Find the velocities of the two objects after the collision
question1a tank of water sits at the edge of a table of height 1.0 m. the tank springs an extremely small leak at its
water is poured into a container that has a leak. the mass m of the water is given as a function of time t by m
q1. an engine does 20000 j of work and rejects 6120 j of heat into a cold reservoir whose temperature is 285 k. what
A particle with a charge of +8.7 ?C and a speed of 45 m/s enters a uniform magnetic field whose magnitude is 0.35 T. find the magnitude of the magnetic force on the particle
A spring can be compressed 2.0 cm by a force of 329 N. A block with a mass of 9.0 kg is released from rest at the top of a frictionless incline as shown. What is the speed of the block just as it touches the spring
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