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A mechanic pushes a 2.40 103 kg car from rest to a speed of v, doing 4950 J of work in the process. During this time, the car moves 29.0 m. Neglecting friction between car and road, find each of the following.(a) the speed vm/s(b) the horizontal force exerted on the carN
A student sits at rest on a piano stool that can rotate without friction. The moment of inertia of the student-stool system is 3.5 kg*m^2. Calculate the initial and final kinetic energy of the system
The tub of a washer goes into its spin-dry cycle, starting from rest and reaching an angular speed of 2.0 rev/s in 8.0 s. Through how many revolutions does the tub turn during this 21-s interval
compute the magnitude of the magnetic force exerted on it.
What is the charge on each electrode.
The wingspan (tip-to-tip) of a Boeing 747 jetliner is 59 m. The plane is flying horizontally at a speed of 300 m/s. Find the emf induced between the wing tips
Use the following scenario for questions 8-10. The mass of Football Player A is 117 kg, and his linear velocity is 6.12 m/s. Calculate linear momentum of Football Player A
An iron meteorite melts when it enters the Earth's atmosphere. calculate the minimum velocity the meteorite must have had before it entered Earth's atmosphere
Net average force using the concepts of Newton’s second law.
Two runners start simultaneously from the same point on a circular 200-m track and run in the same direction. How far from the starting point will each have run at that instant
Each second, 5525 m3 of water flows over the 670-m-wide cliff of the Horseshoe Falls portion of Niagara Falls. How far from the base of the cliff is the barrel
What if, instead, you threw the flashlight away from you to change your momentum toward the spacecraft. If the flashlight had a mass of 2.00-kg and traveled at a speed of 10.0 m/s, how long would it take you to get back
The Beretta Model 92S (the standard-issue U.S. army pistol) has a barrel 127 long. What is the acceleration of the bullet while it is in the barrel
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