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A dentist's chair with a patient in it weighs 1960 N. The output plunger of a hydraulic system begins to lift the chair when the dentist's foot applies a force of 56 N to the input piston. Neglect any height difference between the plunger and the piston. What is the ratio of the radius of the plunger to the radius of the piston?
A 2.5-m long board with a mass of 12 kg is placed on a bar so that it is perfectly balanced, i.e., A 22-kg child sits on the left end of the board. What is the torque they exert on the system
a fighter jet is launched from an aircraft carrier with the aid of its own engines and a steam-powered catapult. the
A 50 g marble moving at 2.0m/s strikes a 20g marble at rest. What is the speed of each marble immediately after the collision
A projectile is red with an initial speed of 65:2 m/s at an angle of 34.5 degrees above the horizontal on a long at ring range. Determine The total horizontal distance covered
Michael Phelps won a gold medal at the 2008 Beijiing olympics by swimming the 200 meter medley in 1:54:80. On an off-day Mike swims the medley in 1:58:32. What is the speed in mph? (Give the ans. to two decimal places)
questionhow to find the length? a shell and tube heat exchanger is to be designed to heat 2.5 kgs of water from 15 to
Describe the motion of a ball in a bus when the bus accelerates foward as it might be perceived by a person standing on the ground outside the bus
The 2.4m Hubble space telescope has been placed into Earth orbit by the same space shuttle. What angular resolution could this telescope achieve by Rayleigh's criterion
A flat surface with area 1.6 m2 is in a uniform electric field of 560 N/C. What is an electric flux through the surface when it is oriented as follows.
i have a vertical spring of spring constant k with a pan on the top. i place a box of mass m on it and let it move to
A dockworker applies a constant horizontal force of 82.0N to a block of ice on a smooth horizontal floor, What is the mass of the block of ice
A disk of radius R carries an amount charge +Quniformly distributed over its surface. Be able to find a vectorexpression for the electric field at a point on the axis of thedisk at a distance z from the center.
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