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A 2.9-kg cart is rolling along a frictionless, horizontal track towards a 1.6-kg cart that is held initially at rest. The carts are loaded with strong magnets that cause them to attract one another. Thus, the speed of each cart increases. At a certain instant before the carts collide, the first cart's velocity is +3.9 m/s, and the second cart's velocity is -1.1 m/s. (a) What is the total momentum of the system of the two carts at this instant? (b) What was the velocity of the first cart when the second cart was still at rest?
At what angle to the surface must a submerged diver in the lake look toward the surface to see the setting sun just along horizon.
if you plot a best-fit line for data on a graph of position vs. time, what units does the lines (vertical) intercept have
An airplane has a mass of 3.46 × 104 kg and takes off under the influence of a constant net force of 3.22 × 104 N. What is the net force that acts on the plane's 71.9-kg pilot
A 23-g lead bullet is shot with a speed of 320 m/s into a wooden wall. Assuming that 60% of the kinetic energy is absorbed by the bullet as heat (and 40% by the wall), what is the final temperature of the bullet
an alien spaceship traveling at a constant velocity of 13 in the x direction passes the earth call this event a at time
A 24 GeV proton in cosmic radiation moves in Earth's magnetic field B, with a velocity v perpendicular to B, What is the radius of the proton's curved path in that region
a solid insulating sphere of radius a 3.1 cm is fixed at the origin of a co-ordinate system as shown. the sphere is
A child and sled with a combined mass of 55.0 kg slide down a frictionless slope. what is the height of the hill
q1. an electric field of 8.55x105 vm is desired between two parallel plates each of area 35.00 cm2 and separated by
A 237 g mass is connected to a light spring of force constant 3 N/m that is free to oscillate on a horizontal, frictionless track. What is the maximum acceleration of the mass
A sailboat leaves a harbor and sails 1.1 km in the direction75 degrees north of east, where the captain stops for lunch. Ashort time later, the boat sails 1.8 km in the direction 15 degreessouth of east. What is the magnitude of the resultant disp..
An 8.00 gram bullet is fired into a 250gm block that is initially at rest at the edge of a table of height 1.0 m. The bullet remains in the block, and after the impact the block lands 2.0 meters from the bottom of the table. Find out the initial s..
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