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Two long parallel wires carry unequal currents in opposite directions. The ratio of the currents is 3 to 1. The magnitude of the magnetic field at a point in the plane of the wires and 10 cm from each wire is 4.0 microT. what is the larger of the two currents?
Consider an elastic collision (ignoring friction and rotational motion). A queue ball initially moving at 2.9 m/s strikes a stationary eight ball of the same size and mass. After the collision, the queue ball’s final speed is 1 m/s. Find the queue ..
a block of mass 2.5 kg is placed at a distance d=0.300 m from the spring. from this posistion the block is projected toward the spring with a speed v
A ball of mass 0.275kg that is moving with a speed of 5.1m/s collides head-on and elastically with another ball initially at rest. Calculate the velocity of the target ball after the collision
Water is flowing at 100 lbm / s in a circular drain pipe of 1 m in diameter. This 1 meter diameter pipe comes to an abrupt constriction when the diameter suddenly reduces to 1.5 feet, Find the velocity of the water in both pipes
a jet moving at 500.0 km/h due east is n a region where the wind is at 120.0 km/h in a direction 30.00 degrees north of east
A window washer is standing on a scaffold supported by avertical rope at each end. What is the tension in each rope when the 710 N worker stands 2.00 m from one end
Four rays of light are incident on a surface of water. Their angles of incidence are 20, 30, 45, y 60 degrees. Calculate the angle of refraction for each ray
A point charge Q is located at the center of a very thin, spherical metal shell. what is the electric potential of the shell
What are the x- and y-components of the electric field at (x, y) = (0 m, +4 m)? (a)Two charges are placed on the x-axis: one is placed at x = 3 m and the other is at x = -3 m.
The magnitude of F is 306 newtons and it points at 93o measured counter clockwise from the positive x-axis. What is the y component (in newtons) of F.
Megan's mass is 27 kg. She climbs the 4.8 m ladder of a slide and reaches a velocity of 3.6 m/s at the bottom of the slide. How much work was completed by friction on Megan? Imagine that air resistance is negligible.
A student could either pull or push, at an angle of 30â?? from the horizontal, a 45kg crate on a horizontal surface, Calculate the minimum work required for both pulling and pushing
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