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A magnetic field points perpendicular into a 5x12 cm rectangular coil of 44 turns and resistance .25 omega. wa a certain instant, there is a 16 A induced current in the coil.
A. what magnitude of emf is being induced in the coil?
B. at what rate is the magnetic field changing in telsa per second?
A severe thunderstorm dumped 2.4 in of rain in 30 min on the town of area 21 km2. What mass of water (in kg) fell on the town? One cubic meter of water has a mass of 103 kg.
A professor's office door is 0.95 wide, 2.2 high, 4 thick; has a mass of 22 , and pivots on frictionless hinges. A "door closer" is attached to door and the top of door frame. When the door is open and at rest, the door closer exerts a torque of 5..
A man sitting in a bosun's chair that dangles from a massless rope, which runs over a massless, frictionless pulley and back down to the man's hand. The combined mass of the man and chair is 86 kg. With what force magnitude should the man pull on ..
A crate of weight W=550 lb has been attached to a pickup truck by a rope whose tensile strength is T_max=350 lb. determine the maximum acceleration of the truck
They then turn together around the spindle with their centers superposed. What is an angular frequency in of the combination.
Two small metallic spheres, each of mass m = 0.212 g, are suspended as pendulums by light strings of length L as shown in the figure below. The spheres are given the same electric charge of 7.9 nC, and they come to equilibrium when each string is ..
A block of mass M is attached to a spring (spring constant k) which is attached to a wall. what is the amplitude of the resulting simple harmonic motion
A 0.954-kg toy car is powered by three D cells (4.50 V total) connected directly to a small DC motor. What is the average current supplied to the car\'s motor
The tortoise can run with a speed of 0.1 m/s and the hare can run with a speed of 2 m/s. They start their race at the same time, but the hare, feeling confident, stops along the way for a two minute nap, and the tortoise wins by the length of his ..
The coil is flipped so its plane is vertical to the magnetic field in 0.050 s. What is the magnitude of the average induced emf.
An electric vehicle starts from rest and accelerates at a rate of 2 m/s2 in a straight line until it reaches a speed of 25.00 m/s. The vehicle then slows at a constant rate of 1.1 m/s2 until it stops. (1) How much time elapses from start to stop? ..
An ambulance passes a bus stop at 50m/s with a siren of 340Hz, What is the wavelength heard by the bus stop costumers as the ambulance approaches
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