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A horizontal wire carries a current I1=80 A. A secondwire is suspended parallel to it. If the second wire carries 20 Aand has a mass per unit length of 0.2 g/m,a) find the relative positions of the wires,b) relative current directions,c) and the separation of the wires.
Astronauts put their spaceship into orbit about a planet. How far above the planet's surface are they orbiting
How much power is needed to push a 85kg chest at 0.72m/s along a horizontal floor where the coefficient of friction is 0.76
question a 15 kg block is on a ramp that is inclined at 20deg above the horizontal. it is connected by a string to a 19
Consider a small virus having a diameter of 10nm . The atoms of the intracelluar fluid are confined within this "box". What is the ground state energy (in eV) of a sodium ion confined in such a box
A 2.4 kg mass is placed on top of a vertical spring. the spring is compressed 4.2 cm. What is the energy stored in the spring
In static equilibrium a spring is stretched 0.25 m by a hanging mass. If the system is initially moved up to the unstretched position and released with zero velocity, determine position of the mass (in m) after 4.2s. Take the equilibrium position ..
A pitcher throws a 0.140-kg baseball, and it approaches the bat at a speed of 50m/s. The bat does Wnc = 70J of work on the ball in hitting it. Ignoring air resistance, determine the speed of the ball after the ball leaves the bat and is 25.0 m abo..
Assume that there is an announcement of a fantastic process capable of putting the contents of physics library on a very smooth postcard. Will it be readable with an electron microscope? Explain.
a taut rope has a mass of 0.170 kg and a length of 3.55 m. what power must be supplied to the rope to generate
Two steel wires of the same length, one with radius r and the other with radius 2r, are connected together, end to end, and tied to a wall. How far does the point where the two wires meet move
A coin with a diameter of 2.40 cm is dropped on edge onto ahorizontal surface. how far does the coin roll before coming to rest
A Girl is pushing on a 45 kg dresser with 300 N of force. The dresser has a coeficient of statice friction of 0.83 and a coeficient of kinetic friction of 0.55. How much is the force of friction on the dresser
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