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Two long, parallel wires carry currents of 0.245 A in the same direction. If the wires are 0.034 m apart,
(a) what is the force per unit length between the wires?
(b) Is this force attractive or repulsive?
A 50 kg woman jumps straight into the air, rising 0.8m from the ground. What impulse does she receive from the ground to attain this height
two identical springs of spring constant 6770 N/m are attached to a block of mass 0.225 kg. What is the frequency of oscillation on the frictionless floor
Point A is located 0.259 m away from a charge of -2.11 x 10-9 C. Point B is located 0.487 m away from the charge. What is the electric potential difference VB - VA between these two points.
An electromagnetic wave has a magnetic field of rms value 3.0 x 10^-6 T. What is the intensity of the wave
An initially stationary box of sand is to be pulled across a floor by means of a cable in which the tension should not exceed 754 N. what is the weight of the sand and box in that situation
A wooden raft has a mass of 65 kg. When empty it floats in water (density 1000 kg/m3) with 41percent of its volume submerged. What mass of sand can be put on the raft without it sinking.
Heat Q flows spontaneously from a reservoir at 445 K into a reservoir at 265 K. Because of the spontaneous flow, 2620 J of energy is rendered unavailable for work when a Carnot engine operates between the reservoir at 265 K and a reservoir at 248 K. ..
An earth satellite is observed to have a height of pergee of 210 Kilometers and a height of apogee of 1,200 kilometers. Find the period of the orbit
A car makes a round trip for 100m in 10 seconds. What is the average velocity?
Assume, instead, that the observer had been moving away from Earth with a speed of 0.80c. How much time would observer have measured for the car to be filled in this case.
Water undergoes viscous flow through two pipes with the same pressure difference between the ends. what is the flow rate through pipe 2
The force of gravity due to the earth results in the balls each having a constant downward acceleration of 9.81 m/s2 How long after the blue ball is thrown are the two balls in the air at the same height
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