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A 2.6-kg cart is rolling along a frictionless, horizontal track towards a 1.7-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 +5.9 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?
How much work must be done to bring three electrons. calculate the mass of an ice cube.
An inquisitive physics student and mountain climber climbs a 55 m cliff that overhangs a calm pool of water. She throws two stones vertically downward 0.8 s apart and observes that they cause a single splash.
A spring is mounted from the ceiling. As a mass is attached, the spring stretches 1.04 m. What will be the frequency of the resulting oscillation
A real heat engine working between heat reservoirs at 970. K and 650. K produces 550. J of work per cycle for heat input of 2200. J. Calculate the total entropy change of the universe
A 0.300 kg glider is moving to the right on a frictionless, horizontal air track with a speed of 0.750m/s when it makes a head-on collision with a stationary 0.150 kg glider, Find the final kinetic energy of first and second glider
Charge Q = 10E-8 C is placed in the origin. Location A is -3.00m from the charge while location B is 2.00m from the charge.A) Find the potential difference VB - VA between the two points. B) Which point is at the higher potential? Type either "Poi..
A child sits on the edge of a spinning merry-go-round that has a radius of 2.9 m. What is the child's acceleration
q1. a thermos contains 175 cm3 of coffee at 85deg c. to cool the coffee you drop two 13-g ice cubes into the thermos.
q1. a vaulter holds a 31.67-n pole in equilibrium by exerting an upward force u with her leading hand and a downward
A block of weight 43.6 N is hanging from a rope. The tension from the rope is pulling upward on the block. The block is accelerating upward at a rate of 1.22 m/s^2. What is the magnitude of the tension in the rope?
A spaceship heads away from earth at 0.20C. The ship beams 400nm light towards Earth. What is the wavelength of light received by the ship
As a space craft approaches a planet, the rocket engines on it are fired to slow it down so it will go into orbit around the planet. how long must the engines be fired
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