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In the process of changing a flat tire, a motorist uses a hydraulic jack. She begins by applying a force of 41 N to the input piston, which has a radius r1. As a result, the output plunger, which has a radius r2, applies a force to the car. The ratior2/r1 has a value of 9.1. Ignore the height difference between the input piston and output plunger and determine the force that the output plunger applies to the car.
The loaded cab of an elevator has a mass of 3.0 x10^3 kg and moves 236 m up the shaft in 23s at constant speed. At what average speed does the force from the cable do work on the cab?
The power needed to operate your body is about 100 {rm watts}. Suppose your body could run on fusion power and could convert a total of 0.7 of its mass into energy. How much energy would be available through fusion? Assume the mass is 70kg.
In a hydraulic system, the larger piston to be used to lift a 1670kg car has a diameter of 24.2cm, If instead compressed air at 115 psi of pressure is used, what is the largest mass car (in kg) that the system can lift
Three +3.0-?C point charges are at the three corners of a square of side 0.50 m. Find the magnitude of the electric field at the center of the square
A 0.015 kg bullet traveling horizontally at 400.2 m/s strikes a 4.1 kg block of wood sitting at the edge of a table. The bullet is lodged into the wood. If the table height is 1.2 m, how far from the table does the block hit the floor.
You are designing a curve in a highway. If the turn is too sharp (the radius of curvature is too small), Find the minimum radius of curvature of a road
A cannonball launched with an initial velocity of 161 m/s at the angle of 45 degrees follows a parabolic path and hits a balloon at the top of its trajectory. Neglect air resistance, how fast is it going when it hits the balloon? What is the accelera..
A permanent dipole is at rest at origin of a coordinate system with a random orientation. What is the equilibrium orientation of the dipole
Since you are pulling up a little on the crate, the floor doesn't have to support as much weight. When you are pulling up on the rope as described above, what is the upward force that the floor exerts on the crate.
Find out the energy dissipated by friction. Find the coefficient of kinetic friction between the tires and the road.
A sound wave travels in air toward the surface of a freshwater lake and enters into the water. What is the wavelength in the water
A sinusoidal voltage ?v = (85 V) sin (200t) is applied to a series RLC circuit with L = 40 mH, C = 145 ?F, and R = 30 ?. What is the impedance of the circuit
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