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A current of 4.0 A is maintained in a single circular loop having a circumference of 80 cm. An external magnetic field of 2.0 T is directed so that the angle between the field and the plane of the loop is 20. Determine the magnitude of the torque exerted on the loop by the magnetic forces acting upon it
A chair is pulled away as a person is moving downward to sit on it, causing the victim to land hard on the floor. Suppose the victim falls 0.50m, the masss that moves downward is 70kg, and the collision on the floor lasts 0.082s.
A student uses an audio oscillator of adjustable frequency to measure the depth of a water well. He reports hearing two successive resonances at 50.5 Hz and 59.5 Hz. How deep is the well
There is one mass on that ramp which is 5.0kg. The other mass which is hanging freely off the ramp is 20.0kg. The force of kinetic friction between the 5.0kg mass and the ramp is .26. The 5.0kg mass is accelerating up the ramp and once it reaches ..
The distance between two telephone poles is d = 52.0 m. How much tension does the bird produce in the wire
A capacitor with air between its plates is charged to 130 V and then disconnected from the battery. Whena piece of glass is placed between the plates, the voltage acrossthe capacitor drops to 25 V. What is the dielectric constant of the glass?
A charge of -330e is uniformly spread through thevolume of a sphere of radius 1.95 cm. What is the volume charge density in that sphere
A baskerball player makes a jump shot. The 0.600 kg ball is released at a height of 2.0 m above the floor with a speed of 7.20 m/s. What is the work done on the ball by air resistance
A concrete highway is built of slabs 13 m long at 20 degrees Celsius. How wide should the expansion cracks between the slabs (15degrees Celsius) be to prevent buckling if the range of temperature is -30 degrees Celsius to 51 degrees Celsius.
A 1600 kg car starts from rest at A, coasts 180m through a dip and comes to stop at B after coasting a distance d on level ground. If the rolling resistance is a constant force of 280N, conclude the distance d.
A lens is located 30 centimeter to the right of an object, with an image clearly focused on a screen 45 centimeter from the lens. Evaluate the focal length of each lens
A horse draws a sled horizontally on snow at constant speed. The horse can produce a power of 1.095 hp. What is the speed with which the sled moves across the snow
question a 60 year old person has a threshold of hearing of 75.0 db for a sound with frequency f 10000 hz. by what
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