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An electric power line carries a current of 1400 A in a location where the earth's magnetic field is 6.0 ? 10-5 T. The line makes an angle of 75° with respect to the field. Determine the magnitude of the magnetic force on a 100 m length of line.
A grinding wheel is initially at rest. A constant external torque of 47.2 N· m is applied to the wheel for 18.8 s, Find the frictional torque, which is assumed to be constant
A spring is hung from the ceiling. A 0.400-kg block is then attached to the free end of the spring. When released from rest, the block drops 0.130 m before momentarily coming to rest, after which it moves back upward.
The top of Mt. Everest is 8750 m above sea level. Assume that sea level is at an average Earth radius of 6.38×10^6 m. What is the magnitude of gravitational acceleration at the top of Mt. Everest? Mass of the Earth is 5.97×10^24 kg.
A child operating a radio-controlled model car on a dock accidentally steers it off the edge. Find the car speed at the instant it drives off the edge of the dock
A particle known as a pion lives for a short time before breaking apart into other particles. What is the lifetime according to a hypothetical person who is riding along with the pion
a 120 g mass is attached to a spring with constant 20 nm. if the mass is pulled back 15 cm from the equilibrium
Two railroad tracks intersect at right angles at station O. At 10AM the train A, moving west with constant speed of 50 km/h, leaves the station O. Find minimum distance between these trains
A prism with angles 45ο , 45ο,and 90ο is to be utilized to turn a beam of light during a 90ο angle. What is the minimum index of refraction for the material of the prism that will give the total internal reflection required?
q1. a 14 g bullet travelling at 247 ms is fired into a 0.459 kg wooden block anchored to a 100 nm spring. how far is a
A copper wire is 6.00 meter long and has a cross-sectional area of 1.00 x 10-4 m2. find the maximum torque that can act on it
A series RLC circuit has a peak current of 4A with a frequency of 32kHz, determine the average power of the circuit over one cycle
Sketch a free-body diagram of the plank. How far can a painter of mass 70.0 kg walk on the overhanging part of the plank before it tips.
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