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Two blocks on a frictionless horizontal surface are on a collision course.One block with mass 0.25 kg moves at 1 m/s to the right collides with a 0.5 kg mass at rest and the two masses stick together. What is the final speed of the blocks after the collision?
Four people with a combined mass of 300kg are riding in a 1100kg car. When they drive down a washboard road with bumps spaced 5.1m apart, How much does the car rise up on its springs
In a World Cup soccer match, Juan is running due north toward the goal with a speed of 7.70{\rm m/s} relative to the ground. What is the magnitude of the ball's velocity relative to Juan
Suppose air, with a density of 1.29 kg/m3 is flowing into a Venturi meter. The narrow section of the pipe at point A has a diameter that is 1/3 of the diameter of the larger section of the pipe at point B. How fast is the air moving at point B
A 150g ball has a kinetic energy 27.2J. A) What's the magnitude of its momentum? Express your answer with the appropriate units. B) Use your answer to find its speed. Express your answer with the appropriate units.
A small plastic ball of mass 9.34×10-3 kg and charge +0.144C is suspended from an insulating thread and hangs among the plates of a capacitor (see the drawing). The ball is in equilibrium, with the thread making an angle of 30.0o with respect to the ..
A 700 kilogram car stopped at an intersection is rear-ended by a 1770 kilogram truck moving with a speed of 14.0m/s. evaluate what the final speed of the truck
a wooden crate of mass 25 kg is sitting on a horizontal cement floor. then one end of a horizontal pulley is attached
Calculate the energy to raise the temperature of 20 g of aluminum from 50 C to 80 C. The specific heat of aluminum is .21 cal/(g C).
An athlete swings a 3.60 kilogram ball horizontally on the end of a rope. The ball moves in a circle of radius 0.960 meter at an angular speed of 0.670 rev/s. Estimate what is its centripetal acceleration
A tuning fork generates sound waves with a frequency of 246Hertz. Calculate the phase difference between the reflected waves
A pendulum is released from rest extended horizontally. The mass ofthe pendulum is 0.5 kg and the length of the string to the centerof mass is 75 cm. What is the speed of the pendulum bob as itpasses through the vertical. Use the work energy theor..
A pair of power transmission lines each have a 0.800 ? resistance and carry 694 A over 9.14 km. If the rms input voltage is 38.1 kV. Calculate the power loss in the lines
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