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Q. Two air carts of mass m = 0.90kg and m = 0.44 kg are placed on a frictionless track. Cart 1 is at rest at first, and has a spring bumper with a force constant of 690 N/m. Cart 2 has a flat metal surface for a bumper, and moves toward the bumper of the stationary cart with an initial speed v=0.61 m/s . Assume that positive -axis is directed toward the direction of motion of cart 2.
What is the speed of the two carts at the moment while their speeds are equal?How much energy is stored in the spring bumper while the carts have the equal speed?What is the final speed of the cart 1 after the collision?What is the final speed of the cart 2 after the collision?
A hot ( ) lump of metal has a mass of 250g and a specific heat of 0.25 . John drops the metal into a 500g calorimeter containing 75g of water at . The calorimeter is constructed of a material that has a specific heat of 0.10 . When equilibrium is ..
How many revolutions does wheel make throughout the time
Speedboat A negotiates a curve whose radius is 198 m. Speedboat B negotiates a curve whose radius is 290 m. Each boat experiences the same centripetal acceleration. What is the ratio vA/vB of the speeds of boats.
A 29.0 kg sled is being pulled across a horizontal surface at a constant velocity. The pulling force has a magnitude of 85.0 N and is directed at the angle of 30.0° above the horizontal. Find out the coefficient of kinetic friction.
You want to take a bath with the water temperature at 35°C. The water temperature is 38°C from the hot water tap and 11°C from the cold water tap. You fill tub with a total of 191kg of water. How many kilograms of water from the hot water tap do y..
A projectile is fired at such an angle from the horizontal that vertical component of its velocity is 49 m/s. The horizontal component of its velocity is 61 m/s.
Two people with a combined mass of 120kg hop into an old car with worn-out shock absorbers. This causes the springs to compress by 8.30 cm. When the car hits a bump in the road, it oscillates up and down with a period of 1.70s.
A plane leaves the airport in Galisto and flies 165 at 68.0 east of north and then changes direction to fly 230 at 48.0 south of east, after which it makes an immediate emergency landing in a pasture.
Suppose the space shuttle is in orbit 460km from the Earth's surface, and circles the Earth about once every 93.80 minutes. Find the centripetal acceleration of the space shuttle in its orbit. Express your answer in terms of g, gravitational accelera..
A 9300 kg boxcar travelling at 23 m/s strikes a second boxcar at rest. The two stick together and move off with a speed of 15 m/s. What is the mass of the second car.
A 1300 N uniform boom is supported by a cable perpendicular to boom. The boom is hinged at the bottom, and a 2100N weight hangs from its top.
An electron is moving at a speed of 1.0 x10^4 m/s in a circular path of radius of 2.1cm inside a solenoid. The magnetic field of the solenoid is perpendicular to the plane of the electron's path. The solenoid has 25 turns per centimeter.
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