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A 5.80 m length of 2.0 mm diameter wire carries a 750 mA current when 22.0 mV is applied between its ends. If the electron drift velocity is 1.7*10^-5 m/s, determine the following:
(a) the resistance R of the wire;
(b) the resistivity p of the material of the wire;
(c) the magnitude of the current density j;
(d) the electric field inside the wire;
(e) the number n of free electrons per unit volume in the wire.
A set of crash tests consists of running a test car moving at a speed of 11.8 m/s (26.4 mi/hr) into a solid wall. Calculate the size of the average force which acts on the dummy during that time
You've made the finals of the Science Olympics! As one of your tasks, you're given 1.1g of copper and asked to make a cylindrical wire, What length will you choose for your wire
Consider a 10.0 kilogram block of copper, specific heat = 387 J/kg*C. The initial temperature of the copper is 25*C, obtain the final temperature of the block
a block of mass 12.0 kg is connected to a spring on a horizontal frictionless surface. write the expression for the position of the block as the function of time
If the piston has a cross sectional area of 0.0100 m^2 and negligible mass, how high would it rise when the temperature is raised to 250°C.
Two very large parallel plates are oppositely and uniformly charged. The field between the plates is 1.7×106N/C, How much total charge is on each plate if they are 18.0cm on a side
When she lets go of the rope her initial velocity is 2.25 m/s at an angle of 35 degrees above the horizontal. If she is in flight for .616 s, explain how high above the water was she when she let go of the rope?
You are told that the linear "drag coefficient" due to air resistance for a particular object is 0.32 N · s/m, Find the magnitude of the terminal velocity of this object when dropped from rest
A ball is thrown at an angle of 52.5 degree above the horizontal at a speed of 8.2 m/s. What is the vertical component of the ball's velocity
A nearsighted student with a far point of 6.30 m wears contacts that allow him to see distant objects clearly. determine image distance for the tree
Assuming that the atom was initially at rest, determine the recoil speed of the hydrogen atom when it emits this photon
Cowboy joe wishes to shoot his assaiat by ricocheting a bullet off a mirrored metal plate. To do so, must he simply aim at the mirrored image of his assaiant? Explain.
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