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1. A 53 newton horizontal force pushes a 5.0 kg mass sitting on a horizontal surface. Additionally, the horizontal surface exerts a 30 newton frictional force on the mass. What is the acceleration of the mass?
2. A 2200 kg car is moving at a speed of 38.0 m/s. Determine the stopping distance(in meters) if the brakes supply a force of 3500 newtons.
Two charged Ping-Pong balls separated by the distance of 1.62 m exert an electric force of 0.0234N on each other. What will be the force if the objects are brought closer, to a separation of only 31.4 cm.
Find the equation of the tangent to the curve at the point
A bowling ball weighing 71.2 is attached to the ceiling by a 3.50 rope. The ball is pulled to one side and released; it then swings back and forth like a pendulum. As the rope swings through its lowest point, speed of the bowling ball is measured a..
What was the absorbed dose in the carbon walls? The average mass stopping powers of graphite and CO2 for the photons are, respectively, 1.648 and 1.680 MeV cm^2/g.
A disk-shaped merry-go-round of radius 2.63 m and mass 155 kg rotates freely with an angular speed of 0.744 rev/s. find the initial and final kinetic energies for this system
a 71 kg baseball lplayer jumps straight up to catch a line drive. If the 140 g ball is moving horizontally at 28 m/s and the catch is made when the ball player is at the highest point of his leap what is his speed immediately after stopping the ba..
The drawing shows an adiabatically isolated cylinder that is divided initially into two identicalparts by an adiabatic partition. Both sides contain one mole of amonatomic ideal gas (γ=5/3) with the initial temperature being 525 K on the left and ..
A nuclear power plant has a power output of 1004 MW and operates with an efficiency of 32%. If excess heat is carried away from the plant by a river with a flow rate of 1e6 kg/s, what is the rise in temperature of the flowing water?
A 1 115.0 kg car traveling initially with a speed of 25.000 m/s in an easterly direction crashes into the back of a 8 200.0 kg truck moving in the same direction at 20.000 m/s. What is the velocity of the truck right after the collision
Assume the ball leaves Sarah's hand a distance 1.5 meters above the ground, reaches a maximum height of 15.0 m above the ground, and takes 2.692 s to get directly over Julie's head. What is the speed of the ball when it leaves Sarah's hand? m/s 6)..
For a base current of 10 μA, what is the value of collector current in common emitter if βdc= 100
A man strikes a long aluminum rod at one end. Another man, at the other end with his ear close to the rod, How long is the rod
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