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a 1600 kg car traveling at 17.5 m/s to the south collides with a 3900 kg truck that is initially at rest at a stoplight. the car and truck stick together and move together after the collision. what is the final velocity of the two-vehicle mass? answer in units of m/s.
A 7.9 kg ball that is originally 3.93 m above a spring is released from rest. How far will the spring compress when the ball lands on it
a 2.50muc charge is located at a point a at the origin and a -6.00 muc charge is located at point b at 20.0cm on the
A -19 mC charge experiences a force of 60 N directed south. What is the electric field magnitude and direction at the location of the charge
a 2190 kg car moving east at 10.4 ms collides with a 3170 kg car moving east. the cars stick together and move east as
water flows with soeed1 m/s from a small hole made at the bottom of a tank filled with water. find height of the tank
A student is reading a lecture written on a blackboard. The lenses in her eyes have a refractive power of 56.03 diopters, and the lens-to-retina distance is 1.827 cm. How far is the blackboard from her eyes
How far should you place the lens from the slide. Express the direction as an angle with respect to the +x axis.
A Carnot engine operates between temperatures of 747 and 324 K. Calculate what the efficiency would be if (a) the temperature of the hot reservoir were raised by 42.5 K or (b) if the temperature of the cold reservoir were lowered by 42.5 K. (Give ..
A 415.00kg elevator accelerates upward at 5.00m/s2 , pulled by a cable of negligible mass. Find the tension force in the cable
in a little league baseball game the 145 rm g ball enters the strike zone with a speed of 15.0 rm ms. the batter hits
A 17.0-lb block rests on the floor. What force does the floor exert on the block, what is the force exerted by the floor on the 17.0-lb block
During a ballet performance a ballerina leaps into the air. If the dancer leaped at 90 degrees, what was the dancers initial speed
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