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A battery with an emf of 12 V and an internal resistance of 1Ω is used to charge a battery with an emf of 10 V and an internal resistance of 1 Ω. Discover the current in the circuit.
A 1000 kg cannon is pointed at 30 degrees to the horizontal. Its muzzle speed is 300 m/s. It fires a ball, mass 5 kg. At what angle and speed will the ball fly out
cientists are experimenting with a kind of gun that may eventually be used to fire payloads directly into orbit. In one test, this gun accelerates a 5.0kg projectile from rest to a speed of 4.0 x 103 m/s. The net force accelerating the projectile..
A hospital orderly pushes horizontally on two boxes of equipment ona rough horizontal floor, as show in figure 4.38. Make a free-bodydiagram of each box if the force applied to the 50lb boxis 115N and each box experiences frictional forces of 8.2N.
q1. an object falls because of gravity at a rate of -9.80 ms2 - sign is indicative of a downward direction for 10.00
A block is sent up a frictionless ramp along which an x axis extends upward. The figure below gives the kinetic energy ofthe block as a function of position x; the scale of the figure's vertical axis is set by Ks =34.0 J.
Draw a free body diagram of a container of water that you are holding, you walk with the container at a constant speed and then stop abruptly. Draw arrows for the force of gravity, the normal force (your hand pushing up on the container) and the s..
a 3.1 microc is at x 0 and a -2.0 microc charge is at x 4.2 cm. let v 0 at r infinity.a at what point along the
A drunk driver in a 1600 kg car plows into a 1500 kg parked car with its brake set. Police measurements show that the two cars skid together a distance of 19 m before stopping. If the effective coefficient of friction is 0.78, how fast was the dru..
A skier of mass 72 kg is pulledup a slope by a motor-driven cable. What power must a motor have to perform this task
Two parallel current carrying wires are separated by 12 cm and each are 50 cm in length. Determine the Force acting on each wire due to the other one
In the figure 29-49, four long straight wires are perpendicular to the page, and their cross sections form a square of edge length a = 30 cm. The currents are out of the page in wires 1 and 4 and into the page in wires 2 and 3, and each wire carri..
An airplane's takeoff speed is 320 km/h. If its average acceleration is 2.90 m/s^2, how long is it on runway after starting its takeoff roll.
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