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A 7.3-kg ladder, 1.92 m long, rests on two sawhorses. SawhorseA, on the left, is located 0.30 m from the end, and sawhorse B, onthe right, is located 0.45 m from the other end. Chose the axis ofrotation to be the center of mass of the ladder.a. What are the torques acting on the ladder?b. Write the equation for the rotational equilibrium.c. Solve the equation forFA in terms of Fg.d. How would the forces exerted by the twosawhorses change if A were moved very close to, but notdirectly under, the center of mass?
Big yellow fishing swimming at 2.0m/s swallows little green fish at rest. Big yellow fish is 3 times as massive as little green fish. What fraction of big yellow fish's initial kinetic energy was lost
The leader of a bicycle race is traveling with a constant velocity of +11.4 m/s and is 11.2 m ahead of the second-place cyclist. How much time elapses before he catches the leader
Find an action to decrease the rise time of pulses passing through an amplifier.
A thermos contains 130 cm3 of coffee at 85° C. To cool the coffee, you drop two 13-g ice cubes into the thermos, What is the final temperature of the coffee
Two automobiles of equal mass approach an intersection. One vehicle is travelling with velocity 13 m/s toward the east and the other is travelling north with speed v2i. Neither driver sees the other.
Some believe that the positions of the planets at the time of birth influence the newborn. Calculate the gravitational force exerted on the baby by the planet Jupiter (m=1.9*10^27 kg) at its closest approach to the earth
A projectile os fored at 35 degrees above the horizontal. Its initial speed is equal to 100 m/s. What is the maximum height reached by the projectile
A uniform sign with a weight of W = 10 Newtons and a width of L = 1 m hangs from a light horizontal beam hinged at the wall. The near end of the sign is a distance d = 1 m from the hinge. The beam is supported by a cable attached to the free end that..
A 390 nm thick film floats on a puddle of water. When illuminated normally with 700 nm light there is no reflection, but 400 nm light is strongly reflected. What is the film's index of refraction
A certain traffic light is yellow for 2.70 s before it turns red. To come to a complete stop before reaching the intersection, what is the minimum distance you can be from the light when it turns yellow
Consider the NaCl molecule, for which the moment of inertia is 1.30 x 10-45 kg·m2. what are the allowed Raman-scattered wavelengths
a chain is held on a frictionless table with 1/5 of its length hanging over the edge. how much work is required to pull the hanging part back
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