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A 0.61-mm-diameter copper wire carries a tiny current of 2.6A. The molar mass of copper is 63.5 g/mole and its density is 8900 kg/m3. NA=6.02×1023.
Estimate the electron drift velocity. Suppose one free electron per atom. Express your answer to two important figures and include the appropriate units.
To stretch a certain spring by 2.70 cm from its equilibrium position requires 7.00 J of work. What was the maximum force required to stretch it by that distance
A sled is initially given a shove up a frictionless 26.0° incline. It reaches a maximum verticalheight 1.45 m higher than where itstarted. What was its initial speed
At a particular instant an electron is traveling in the +y direction, with speed 7105 m/s. find the magnitude of the magnetic force on the electron
The terminal speed of a sky diver is 124 km/h in the spread-eagle position and 338 km/h in the nosedive position. Assuming that the diver's drag coefficient C does not change from one position to the other
Two identical containers are open at the top and are connected atthe bottom via a tube of negligible volume and a valve that isclosed. Determine the fluid level in the left container when equilibrium is re established
A snowboarder starts from rest and glides down a hill that is 100m high. Assuming no friction, what is her speed at the bottom of the hill
A car traveling on a flat (unbanked) circular track accelerates uniformly from rest with a tangential acceleration of at. Determine the coefficient of static friction between the car and track from these data
A luge and its rider, with a total mass of 90 kg, emerge from a downhill track onto a horizontal straight track with an initial speed of 38 m/s. If a force slows them to a stop at a constant rate of 1.4 m/s2.
A 0.500-kg particle has a speed of 2.30 m/s at point A and kinetic energy of 7.40 J at point B a) what is its kinetic energy at pt A. b) what is its speed at pt B.
A handball is thrown straight upward and is in the air for a total time of 8 s. Draw a diagram, label time and velocity every second. Compute the maximum height of the ball in meters
A converging lens of focal length 8.490 cm is 19.8 cm to the left of a diverging lens of focal length -5.83 cm. Find the magnification of the coin's final image
a charge 39.41 mc is placed to the left of another charge 76.73 mc on a plane. another charge of -5.551 oc and mass
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