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A 1443 kg railroad car traveling at a speed of 10m/s strikes an identical car at rest. If the cars lock together as a result of the collision, what is their common speed afterward? Answer is in meters per second . Vf = ?
a 184x astronomical telescope is adjusted for a relaxed eye when the two lenses are 1.20 m apart. what is the focal length of the objective
during a racing event a 110 kg car accelerates from 0 to 29 m/s in 4.3 seconds. what is the net force exerted on the car
What type of car was involved in the hit and run
A thin metallic shell of radius 40 cm has a charge of -25 nC on it. At the center of sphere is a point charge of 35 nC. What is the electric field 15 cm from the center of the shell.
how long does it take the engine to lift the crate a vertical distance of 19.8 m? Friction in the system is negligible.
What is the mass of the block on the left. Find this angle of the thread.
If the velocity of the car is increased to 50 km/ hour, what is its kinetic energy. if the velocity is improved to 75 km/ hour, what is its kinetic energy.
A sport utility vehicle (SUV) and a sports car travel around the same horizontal curve. The SUV has a static stability factor of 0.80 and can negotiate the curve at a most speed of 18 m/s without rolling over.
One wire carries a current of 5.008 A into it. Another wire carries a current of 5 A out of it. Explain how long would it take for the sphere to increase in potential by 4000 volts?
A set of crash tests consists of running a test car moving at a speed of 11.8 m/s (26.4 mi/hr) into a solid wall. Calculate the size of the average force which acts on the dummy during that time
The helicopter view in the figure below shows two people pulling on a stubborn mule. What is the single equivalent force magnitude and direction
An ice skater is rotating at 3.4rev/seconds while her arms are beside her. The moment of inertia of the skater is 5kg x m^2. what is her new angular velocity
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