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A 6500-kg satellite is in a circular earth orbit that has a radius of 3.4 x 107 m. A net external force must act on the satellite to make it change to a circular orbit that has a radius of 8.3 x 106 m. What work must the net external force do?
A stone is tied to a string (length = 0.950m) and whirled in acircle at the same constant speed in two different ways. First, the circle is horizontal and the string is nearly parallelto the ground. Next, the circle is vertical.
In the figure here, a red car and a green car move toward each other in adjacent lanes and parallel to an x axis. At time t = 0, the red car is at xr = 0 and the green car is at xg = 221 m. If the red car has a constant velocity of 29.0 km/h, the ..
A small conductive rod of length 1.4 m moves with a constant velocity v=11 m/s in a direction parallel to a long wire carrying a current of 34 A. Calculate the electric potential induced across the rod
a 6.40 tall cylinder floats in water with its axis perpendicular to the surface. the length of the cylinder above water
If the car continues to decelerate at this rate, how much more time is required for it to stop
A car of mass 920.0 kg accelerates away from an intersection on a horizontal road. When the car speed is 41.0 km/hr (11.4 m/s), Calculate the acceleration of the car at that time
Three astronauts, propelled by jet backpacks, push and guide a 114 kg asteroid toward a processing dock, exerting the forces, with F1 = 32 N, F2 = 52 N, F3 = 39 N, θ1 = 30°, and θ3 = 60°. What is the (a) magnitude and (b) angle (measured relative ..
Two particles with charges +6e and -2e are initially very far apart (effectively an infinite distance apart). They are then fixed at positions that are 4.92 x 10-10 m apart. What is EPEfinal - EPEinitial, which is the change in the electric potent..
At a distance r1 from a point charge, the magnitude of the electric field created by the charge is 345 N/C. At a distance r2 from the charge, the field has a magnitude of 120 N/C
A fish takes the bait and pulls on the line with a force of 2.1 N. How much line does the fish pull from the reel in 0.28 s
two large parallel conducting plates are 12 cm apart and have charges of equal magnitude and opposite sign on their
A person pushes a 21.9-kg shopping cart at a constant velocity for a distance of 23.8 m on a flat horizontal surface. What is the magnitude of the force that the shopper exerts
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