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A hydraulic lift in a garage has two pistons: a small one of cross-sectional area 4.50 cm2 and a large one of cross-sectional area 220 cm2.
Part A. If this lift is designed to raise a 3400 kilogram car, find what minimum force must be applied to small piston?
Part B. If the force is applied through compressed air, find what must be the minimum air pressure applied to the small piston?
A proton moves in a circular path perpendicular to a 1.18 T magnetic field. The radius of its path is8.50 mm. Calculate the energy of theproton in eV.
A 100-W lightbulb has a resistance of about 12 ? when cold (20 ?C) and 140? when on (hot). Estimate the temperature of the filament
A 38.8-kg boy, riding a 2.27-kg skateboard at a velocity of +5.22 m/s across a level sidewalk, jumps forward to leap over a wall. What is the skateboard's velocity relative to the sidewalk
An object started from rest and traveled 250m to achieve the speed of 12 m/s. What was the force acting on the object of its mass is 8.0 kg
A sinusoidal electromagnetic wave having a magnetic field of amplitude 1.20uT, What is the amplitude of the associated electric field
If the entrance velocity into the pipe is 12.5 m/s, what is the rate of flow of the material (air) 'Rm'? What is the velocity 'Vf' when the air is ejected into the surroundings at 1 atm through a nozzle
They then turn together around the spindle with their centers superposed. What is an angular frequency in of the combination.
q1. diffraction also occurs with sound waves. consider 1900-hz sound waves diffracted by a door that is 87 cm wide.
a pitcher throws a horizontal fastball with a velocity of 34 m/s to the left. The batter hits the baseball horizontally to the right with a speed of 52 m/s. How much work is done on the baseball by the bat
an electron is released from rest in a uniform electric field. if the electric field is 1.25 knc at the end of 20 ns
Two equal point charges of magnitude 4.0 ?C are situated along the x-axis at x1 = -2.0 m and x2 = -2.0 m. What is the electric potential energy of this system of charges
What is the magnitude of the acceleration of a modified Atwood machine if the mass of the cart is 3 kg and the hanging mass is 4 kg? (Use g = 9.8 m/s2. Express your answer to one decimal point.)
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