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A toy car of mass 4 kilogram is sitting stationary when a child rolls a toy truck of mass 6.5 kilogram straight towards it in the negative x-direction with a speed of 5 m/s. Find the velocity of the center of mass of the system consisting of the two toys?
The drawing shows a positive point charge +q1, a second pointcharge q2 taht may be positive or negative, and a spot labeled P,all on the same straight line. The distance d between the twocharges is the same as the distance between q1 and the spot ..
at time t = 0 s, a puck is sliding on a horizontal table with a velocity 3.60 m/s, 35.0* above the + axis. What is the velocity of the puck at time t = 1.50 s
A phonograph record has an initial angular speed of 36 rev/min. therecord slows to 13 rev/min in 2 seconds. what is the record'saverage angular acceleration during this time interval? answer inunits of rad/s2
Discover the minimum aperture diameter of a camera that can resolve detail on the ground the size of a person(2.0 m) from an SR-71 Blackbird airplane flying at an altitude of 29 km.
A roller coaster car moves 200 ft horizontally and then rises 135 ft at an angle of 30 degrees above the horizontal, What is its displacement from its starting point
at t 0 a stone is dropped from the top pf a cliff above a lake. another stone is thrown downward 1.6s later from the
A geodesic dome constructed with an aluminum framework is a nearly perfect hemisphere; its diameter measures 56.0 m on a winter day at a temperature of 12.5°C.
the efficiency of a particular car engine is 26 when the engine does 6.3 kj of work per cycle. assume the process is
A softball of mass 0.220 kg that is moving with a speed of6.0 m/s (in the positive direction)collides head-on and elastically with another ball initially atrest. Calculate the velocity of the target ball after the collision
A tennis player hits the ball with her racket. Explain does this relationship of the magnitudes of the two forces change at any time during the collision
A string under a tension of 47.00N is used to whirl a rock in a horizontal circle of radius 2.60 m at a speed of 21.0 m/s. The string is pulled in and the speed of the rock increases.
Two resistors are connected in a series to a 15V battery. The voltage drop across the first resistor is 3.5V, What is the resistance of the two resitors
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