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A 500kg car traveling due east at 54.0km/h collides head on with a 3000kg van moving at 18.0km/h. If the two vehicles stick to each other as a result of the collision, calculate the velocity of the combined mass.
A stretched spring stores 2.2 of energy. How much energy will be stored if the spring is stretched three times as far
A machine in the factory operates from 12 V. To operate from a 240 V line, What would the voltage output be if the transformer were connected backward
linda pulls a sled with force 89 newtons at 30 degrees east of north. find the resultant force and direction
Consider a dielectric material with dielectric constant (e) and with a given free charge distribution per unit volume ?f. Show that the dielectric constant is > 1 and show that the bound charge per unit volume ?b and the total charge per unit volume ..
A 0.07-kg lead bullet traveling 296 m/s strikes an armor plate and comes to a stop. If all of the bullet's energy is converted to heat that it alone absorbs
In the process of changing a flat tire, a motorist uses a hydraulic jack. She begins by applying a force of 45 N to the input piston, which has a radius r1. find the force that the output plunger applies to the car
True false questions on physics
predict how to changing the variables may effect the distance traveled or the speed of the race car.
A blue car with mass mc = 547 kg is moving east with a speed of vc = 19 m/s and collides with a purple truck with mass mt = 1327 kg that is moving south with an unknown speed. FIND the magnitude of the initial momentum of the truck
four charges, given in multiples of 1.00×10-5 C form the corners of a square and four more charges lie at the midpoints of the sides of the square. find the direction of the electric field at the center of the square
If wind blows at 32 m/s over a house, what is the net force on the roof if its area is 238 m2 and is flat
a wooden box weighing 245 n is pushed across the floor by a workman who exerts a horizontal force of 172 n. if the
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