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Block 1, of mass = 9.70 , moves along a frictionless air track with speed = 19.0 . It collides with block 2, of mass = 15.0 , which was initially at rest. The blocks stick together after the collision. Find the magnitude of the total initial momentum of the two-block system. Find , the magnitude of the final velocity of the two-block system. What is the change in the two-block system's kinetic energy due to the collision?
An iron brick measuring 200 mm / 20 cm / 0.05 m is submerged in pure water. (mass density 7860 kg/m^3/ weight 490 lb/ft/ specific gravity 7.86), What is the net force on the brick
High-speed stroboscopic photographs show that the head of a 240-g golf club is traveling at 52 m/s just before it strikes a 46-g golf ball at rest on a tee. Find the speed of the golf ball just after impact
An outfielder throws a 0.150 kg baseball at a speed of 20.0 m/s and an initial angle of 30.0°. What is the kinetic energy of the ball
A man slides along a long water slide and then being launched into the air to land in a water pool. Find the magnitude of the velocity at landing
A proton has a speed of 0.85c. FIRST Calculate the rest energy of the proton, Calculate the kinetic energy of the proton
A 116 g insulated aluminum cup at 15°C is filled with 140 g of water at 50°C. After a few minutes, equilibrium is reached. Estimate the total change in entropy
A 30-06 caliber hunting rifle fires a bullet of mass 0.0146 kg with the velocity of 314 m/s to the right. The rifle has a mass of 2.49 kg.
An RLC circuit has a sinusoidal voltage supplied to it at 632 kHz with a peak voltage of 748 V; a 25 k? resistance; a 16 µF capacitance; and a 30 H inductance
Measurements with microelectrodes have shown that a 0.30-nm-diameter potassium ion(K+) channel carries a current of 1.8 pA, How many potassium ions pass through if the ion channel opens for 1.0 ms
A car with its parking brake on starts sliding down an extremely slippery icy h=6 m high embankment into a level snowy muddy field with a coefficient of kinetic friction of 0.8
A 57-kg water skier is being pulled by a nylon tow rope that is attached to a boat. The unstretched length of the rope is 11 m, What is the change in the length of the rope when the skier has an acceleration whose magnitude is 0.90 m/s2
If the net work done on an object is zero, what can you determine about the object's kinetic energy?
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