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A cart with mass 200gmoving on a frictionless linear air track at an initial speed of 1.1m/sundergoes an elastic collision with an initially stationary cart of unknown mass. After the collision, the first cart continues in its original direction at 0.67m/s. What is the mass of the second cart?What is its (second cart) speed after impact? What is the speed of the two-cart center of mass?
A shotgun fires a large number of pellets upward, with some pellets traveling very nearly vertically and others as much as 1.0o from the vertical. suppose that the initial speed of the pellets is uniformly 150ms-1 and ignore air resistance.
What is the magnitude of the external force essential to hold a 2 kg cart motionless at the top of a 2m high incline which is 30 degrees.
A hammer strikes one end of a thick iron rail of length 5.83 m. A microphone located at the opposite end of the rail detects two pulses of sound, Which pulse reaches the microphone first
A pipe is closed at one end. A speaker attached to an adjustable signal source is placed very near the open end. The volume of the speaker is set very low so that the sound can barely be heard. However, as the frequency of the source is adjusted i..
The brick wall of a building has dimensions of by and is thick. How much heat ?ows through the wall a period when the average inside and outside temperatures are, in that order.
A force of 70.0 N is exerted at an angle of 30.0 below the horizontal on a block of mass 8.00 kg that is resting on a table
An atomic nucleus of mass m travelling with speed v collides elastically with a target particle of mass 2.000m (at first at rest) and is scattered at 90.
An eagle is flying horizontally at 5.7 m/s with a fish in its claws. How much time passes before the fish's speed doubles
A proton is released from rest inside a region of constant, uniform electric field E1 pointing due North, What is the ratio of the magnitude of E2 to the magnitude of E1
A 72.3 kg man carrying a 5.23 kg box gets on an elevator. As the elevator accelerates upwards at 0.224 m/s^2, he feels the box is heavier, During this time, what is the weight on the floor from his feet
A raindrop of mass 3.27 10-5 kg falls vertically at constant speed under the influence of gravity and air resistance, What is the work done on the raindrop by air resistance
A 0.45kg mass is attached to a spring with a force constant of 21N/m and released from rest a distance of 3.6cm from the equilibrium position of the spring, How far is the mass from the equilibrium position
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