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A 1041 kg van, stopped at a traffic light, is hit directly in the rear by a 744 kg car traveling with a velocity of +2.00 m/s. Assume that the transmission of the van is in neutral, the brakes are not being applied, and the collision is elastic. What is the final velocity of the car?
four point charges have the same magnitude of 3.2 times 10-12 c and are fixed to the corners of a square that is 6.8 cm
the angular velocity of a runners thigh changes from 3 rads to 2.7 rads during a 0.5 s time period. what has been the
A child in a swing starts from rest, while pulled back at an angle of 30 degrees from vertical. Determine the velocity of the boy just before he hit the ground
Blocks of mass 20, 80, and 240 kg are lined up from left to right in that order on a frictionless surface so each block is touching the next one. What is the magnitude of the force that the left block exerts on the middle one
A current of 0.307 A through your chest can send your heart into fibrillation, ruining the normal rhythm of heartbeat and disrupting the flow of blood (and thus oxygen) to your brain. If that current persists for 2.90 min, how many conduction elec..
four solid plastic cylinders all have radius 2.51 cm and length 6.48 cm. find the charge of each cylinder given the
5 kg of water at 60 degrees are put in contact with 1 kg of ice at 0 degrees and are thermally isolated from everything else. What is the change in entropy of the universe while the ice melts
A person cooks a meal in a 30-cm-diameter pot that is covered with a well-fitting lid and lets the food cool to the room temperature of 20°C. The total mass of the food and the pot is 8 kg.
a river 8 km wide has a current with a speed of 3 kmhr. how much longer will it take a boat with a speed of 5 kmhr to
A playground is on the flat roof of a city school, 5.9 m above the street below (see figure). The vertical wall of the building is h = 7.40 m high, Find the speed at which the ball was launched
An 8,000 rocket is shot straight up from the Earth's surface with the initial speed of 800 m/s. How high does it go.
An air conditioner connected to a 120V rms ac line is equivalent to a 12.0 resistanceand a 1.40 inductive reactancein series. Calculate the impedance of the air conditioner
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