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A 2.5-kg cart is rolling along a frictionless, horizontaltrack towards a 1.5-kg cart that is held initially at rest. The carts are loaded with strong magnets that cause them to attract oneanother. Thus, the speed of each cart increases. At a certaininstant before the carts collide, the first cart's velocity is +4.5m/s, and the second cart's velocity is -2.5m/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 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), the net power which the engine supplies is 4300.0 W (in addition to the extra power required to make up for air resista..
calculate the molarity and the molality of an nh3 solution made up of 30.0 g of nh3 in 70.0g of water. the density of
When responding to sound, the human eardrum vibates about its equilibrium position. Supposed an eardrum is vibrating with an amplitude of the 6.3*10^7 m and a maximum speed of 2.0*10^-3 m/s.
what is the reed solomon code defined over f7 with crarr 3 b 4 and 4? what is its dimension and distance?what is
A space traveller weighs herself on Earth, at a location where the acceleration due to gravity is 9.82 m/s2, and finds a value of 571 N. What is the traveller\'s mass on the planet
Inversely proportional to the square of the fields
A tennis player hits a 1.45 kg tennis ball with a racket of mass 2.5 kg. what impulse did he imply on the ball
Your friend's 15.3 graduation tassel hangs ona string from his rearview mirror. When he accelerates from astoplight, the tassel deflects backward toward the rear of the carat an angle of 5.16 relative to the vertical.
A horizontal rifle is fired at a bull's-eye. The muzzle speed of the bullet is 655 m/s. What is the horizontal distance between the end of the rifle and the bull's-eye
the acceleration of a particle is directly proportional to the square time t. when t 0 the particle is at x 24m.
A whale swims due east for a distance of 1.5 km, turns around and goes due west for 5.7 km, and finally turns around again and heads 4.5 km due east. What is the total distance traveled by the whale
A 10-kg crate is placed in the bed of a truck at rest on horizontal ground. The truck accelerates uniformly at 1 m/s^2for 10 seconds. What is the sign of the work done on the crate
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