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Question: The mean radius of the screw of a square-threaded jackscrew is 25 mm. The pitch of the threads is 7.5 mm. If the coefficient of friction is 0.12, what force applied to the end of a lever 600 mm long is needed to raise a load having a mass of 1.84 metric tons?
A diverging lens with f = -25.5cm is placed 16.5cm behind a converging lens with f = 22.0cm. Where will an object at infinity be focused
Water has a mass mole of 18.0g/mol, each water molecule(H20) has 10 elelctrons. What is net charge of all electrons? How many electrons are there in one liter (1.00 x10-3m-3) of water?
an object undergoes projectile motion where friction is negligible and the acceleration due to gravity g is constant.
A resistor is constructed out of carbon by forming a cylinder with radius 0.11 mm and length 0.31 cm. What is the resistance of the resistor between the ends of the piece of carbon? The resistivity of carbon is 1.375e-5 ohm*m
In a double-slit experiment, two parallel slits are illuminatedfirst by light of wavelength 464 nm, and then bylight of unknown wavelength. What is the unknown wavelength
A 58.0 kilogram guy is riding an escalator in a shopping mall. Find the work done on the guy by the gravitational force
Two point charges have a total charge of 276 uC. When placed 1.79m apart, the force each exerts on the other is 26.0N and is repulsive. What is the charge on each?
A(n) 0.179 kilogram baseball is thrown with a speed of 22.8 m/s. Determine the average force exerted by bat on the ball if the two are in contact for 0.00148 second
A physicist visits a wealthy friend (marketing major) who has a swimming pool. Calculate the minimum thickness of the oil film
A 0.550 kilogram mass is suspended from a spring. A force of 1.00 N stretches it an additional 40.0 millimeter. Compute the maximum acceleration and maximum velocity of the system
An electric scooter has a battery capable of supplying 140 Wh of energy. If friction forces and other losses account for 60.0 percent of the energy usage, what altitude change can a rider achieve when driving in hilly terrain, if the rider and scoote..
Another example in which the emphasis is not on priors. You visit a family whose three children are all at the local school. You don't know anything about the sexes of the children.
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