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The hydraulic oil in a car lift has a density of 8.20 × 102 kgm-3. The weight of the input piston is negligible. The radii of the input piston and output plunger are 7.80 × 10-3 and 0.125 m, respectively. What input force F is needed to support the 24 600 N combined weight of a car and the output plunger, when
i. the bottom surfaces of the piston and plunger are at the same level, and
ii. the bottom surface of the output plunger is 1.40 m above that of the input piston?
Most of the motion generated by joints in the human body are examples of levers. An example of a third class lever is the forearm; what force is exerted by the biceps muscle
A 5.7 μF capacitor is charged with3.6×105 C. What potential difference exists across it
A highway engineer wants to design a horizontal turn so that a car with mass 623 kg can go 16.8 m/s around curve. what is the smallest radius she can make the turn
A uniformly charged ring of radius 10.0 cm has a total charge of 50.0 µC.
a) What is the final vertical velocity of the egg when it hits his twin. b) how long does it take to reach his brother? (Be sure to include units.)
A system consists of three particles with these masses and velocities: mass 3.2 kg, moving north at 3.0 m/s; mass 3.8 kg, moving south at 4.9 m/s, What is the total momentum of the system
A 82 kg ice hockey player standing on a frictionless sheet ofice throws a bowling ball horizontally with a speed of 2.3m/s. With what speed does the hockey player recoil
three forces acting on an object are given by f1 -2.00i 2.00j n f2 5.00i -3.00j n and f3 -45.oi n. the object
The tires of a car make 86 revolutions as the car reduces its speed uniformly from 88.0 km/h to 60.0 km/h . The tires have a diameter of 0.90 m.
A rolling pin rolls down a 2m incline that forms a 60 degree angle with the ground. What is the final velocity of the rolling pin if there is no friction
A 3.6 meter long steel wire has a cross-section area of 0.047 cm2. Its proportional limit has a value of 0.0015 times its Young's modulus. Find how much will the wire stretch under this load
A 5.00 uF and a 7.00 uF capacitor are connected in series, and this combination is connected across a 48.0V potential difference. Calculate the potential difference across first one
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