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Three air carts have masses, 4m,2m and m. the most massive cart hasan initial speed of Vo; the other two carts are at restinitially. All carts are equipped with spring bumpers that giveelastic collisions.
a) find the final speed of each cartb) verify that the final kinetic energy of the system is equalto the initial kinetic energy. (assume the air track is long enoughto accommodate all collisions)
The minute hand of a wall clock measures14 cmfrom its tip to the axis about which it rotates. find angle from a quarter after the hour to half past
At a particular instant a proton is traveling in the -y direction, with speed 4105 m/s. What is the magnitude of the magnetic force on the proton
Two forces F1 and F2 are acting on a mass M=6.0 kg. The force F1 = 5.0i + 7.0j + 2.0k, in N. The acceleration of the mass is given by a = 2.0i + 7.0j + 5.0k, in m/s2. Calculate the magnitude of F2.
The average distance of the planet Mercury from the sun is 0.39 times the average distance of the earth from the sun. How long is a year on Mercury in units of earth years
a rigid closed insulated container with a volume of 45 ft3 is filled with carbon dioxide at a pressure of 14.7 psia and
An unloaded Hummer has a standard ground clearance of 40cm, and an unloaded mass of 2000kg. What is the total mass of the hummer
Ball 1, with mass of 100g and traveling at 10 m/s, collides head-onwith ball 2, which has a mass of 300g and is initially at rest. What is the final velocity of each ball
An electric heater consumes electrical energy at a rate of P = 200 W when connected to a battery with an emf of 120 V. What is the current in the heater
The resistance of a metal rod depends on temperature. The resistance of a metal rod does not depend on itsconductivity. The resistance of a metal rod with fixed cross-sectional area dependson the shape of the cross sectional area.
A nuclear power plant operates at 79% of its maximumtheoretical (Carnot) efficiency between temperatures of660°C and 370°C. how much exhaust heat is discharged per hour
Two identical capacitors store different amounts of energy: capacitor A stores 2.4 x 10-3 J, and capacitor B stores 1.3 x 10-4 J. Find the voltage across the plates of capacitor A
a bb gun is fired at a cardboard box m2 1.85 kg on a frictionless surface. the bb has a mass of m1 0.044 kg and
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