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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?
A piece of Nichrome wire has a radius of 5.2 x 10-4 m. It is used in a laboratory to make a heater that dissipates 3.50×102 W of power when connected to a voltage source of 100 V. Ignoring the effect of temperature on resistance, estimate the necessa..
A wagon is rolling forward on level ground. Friction is negligible. The person sitting in the wagon is holding a rock. Find the speed of the wagon after the rock is thrown
A long string with a mass/length of 500 g/m is placed under a tension of 400 N, What is the wavelength of the resulting wave
A particle with charge 94.5 nC is moving in the region where there is a uniform magnetic field of magnitude 0.45 T pointing in the negative x-direction. What is the magnetic field vector in vector notation
A 0.70-kg mass attached to a vertical spring of force constant 140N/m oscillates with a maximum speed of 0.40m/s, Find the maximum magnitude of the acceleration
It is important for the body to have mechanisms to effectively cool itself; if not, moderate exercise could easily increase body temperatures to dangerous levels. by how much would his body temperature rise during this exercise
A wooden block with m1 = 3.1kg is sliding across a frictionless surface in the ?x direction at 5.2 m/s. What is the velocity of the m2 block in the lab frame after the collision
At its narrowest point the femur bone in the human leg resembles a hollow cylinder that has an outer radius of roughly 1.1 cm, how much force will be required to rupture it
Light of wavelength 588.0 nm illuminates a slit of width 0.68 mm. Calculate the width of the central maximum
Five vectors of equal magnitude 190mm, make angles26o, -26o, 41o,-41o,and 90o with respect to the x-axis. What is the length in (mm) of the sum of these vectors?
q1. show a analyse to find the time in years that it would take to travel to relatively nearby barnards star which is
What is the tension in (a) the nearer (relative to the person) cable and (b) the farther (relative to the person) cable.
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