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The only force on a 4.0-kg body as it moves along the x axis is given by Fx = (14 - 6.1x) N, where x is in m. The velocity of the body at x = 1.4 m is 3.9i m/s. What is the maximum kinetic energy attained by the body?
What are the x and y acceleration components of a 5 kg particle subject to Force 1 (F1x = 4.6 N and F1y= -2.1 N) and Force 2 (F2x=-2.8 N and F2y= 5 N)
A person whose mass is 72 kg sits on a piston of a hydraulic lift. The radius of this piston is 0.18 m, What is the mass of a puppy
Three equal point charges, each with charge 2.00, are placed at the vertices of an equilateral triangle whose sides are of length 0.650. Illustrate what is the electric potential energy of the system?
A 1kg block at the bottom of a ramp is on a compressed spring with the spring constant k=300N/m. what is the initial acceleration of the block up the ramp
A light string that does not stretch changes from horizontal to vertical as it passes over the edge of a table. The string connects m1, a 3.4 kg block, originally at rest on the horizontal table at a height 1.27m above the floor, to m2, a hanging ..
Using the equation for the period of a pendulum, determine the period of a pendulum that is 3.0m long, Estimate the spring constant for each of the four springs on a 1260kg car if the static weight of the car causes the springs to compress 10.0cm
You want to lift a heavy box with a mass of 98 kg using a two pulley system. If you lift the box by 1 m, how much work is done by gravity
A 1200 kg car moving north at 27 m/s is struck by a 2165 kg car moving east at 11.0 m/s. The cars are stuck together. How fast and in what direction do they move at once after the collision.
A person walks first at a constant speed of 5.10 m/s along a straight line from point to point and then back along the line from to at a constant speed of 2.95 m/s. (a) What is her average speed over the entire trip? (b) What is her average veloci..
A lens that has a focal length of 8.45 cm is used as a magnifying glass. (Take the near point of a normal eye to be 25 cm from the eye.) What is the angular magnification
A person pushes horizontally with a force of 210 N on a 53 kg crate to move it across a level floor. The coefficient of kinetic friction is 0.30. What is the magnitude of the frictional force
If you connect three resistors with values of 100 ohms, 250 ohms, and 400 ohms together in series, what is the effective resistance of the combination of the three
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