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A cart of mass m1 = 0.500 kg moves with a velocity of 0.900 m/s to the right on a frictionless track. It collides with another cart of mass m2 = 0.500 kg at rest. Car m1 stops and m2 moves in the direction that m1 was traveling. What is the magnitude and direction of the velocity of m2?
A small oven has a surface area of 0.26 m2. The insulated walls are 1.3 cm thick with an average thermal conductivity of 0.040 W/moC. What is the rate of heat loss
A mountain climber stands at the top of a 32.5-m cliff that overhangs a calm pool of water. What initial velocity must the second stone have had, given that they hit the water simultaneously
The Youngs Modulus for copper is 130 Gpa. What is the strain in the the copper wire under a stress of 120Mpa
A gun fires a bullet with muzzle velocity 0.6c. If an alien is on a spaceship which moves at 0.8c and fires the gun in the forward direction, what is the bullet's velocity according to you
What is the total force on the bottom of a swimming pool 29.5m by 9.1m whose uniform depth is 1.6m, What is the absolute pressure on the bottom of a swimming pool
A car of mass M = 900kg traveling at 50.0km/hour enters a banked turn covered with ice. What is the radius r of the turn
A system of 1610 particles, each of which is either an electron or a proton, How many electrons are in this system
What is the magnitude of the acceleration of a modified Atwood machine if the mass of the cart is 3 kg and the hanging mass is 4 kg? (Use g = 9.8 m/s2. Express your answer to one decimal point.)
A 67.0-kg person throws a 0.0500-kg snowball forward with a ground speed of 25.0 m/s. A second person, with a mass of 59.0 kg, catches the snowball. Both people are on skates. The first person is initially moving forward with a speed of 2.10 m/s, and..
what is the maximum amount the spring may be stretched and the box remain at rest.
A 18--long nichrome wire is connected across the terminals of a 1.5 battery. What is the electric field inside the wire? What is the current density inside the wire? If the current in the wire is 3.0 , what is the wire's diameter? please show what fo..
The leg and cast weigh 220 N, with the center of mass as indicated by the blue arrow in the diagram. The counterbalance w1 weighs 135 N. find the weight w2 and the angle α needed so that no force is exerted on the hip joint by the leg plus cast.
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