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A bird lands on a bare copper wire carrying a current of 33 A. The wire is 8 gauge, which means that its cross-sectional area is 0.13 cm2. (a) Find the difference in potential between the bird's feet, assuming they are separated by a distance of 5.6 cm. (b) Will your answer to part (a) increase or decrease if the separation between the bird's feet decreases?
A certain electric extension cord has a resistance of 4.96 ?. Suppose it is replaced by an extension cord made of the same material. What is the resistance of the new cord
A car moving with an initial speed v collides with a second stationary car that is 49.0 percent as massive. Calculate the final speed of the second car
A cylindrical storage tank has a radius of 1.11 m. When filled to a height of 3.81 m, it holds 15,301 kg of a liquid industrial solvent. What is the density of the solvent
a stone is dropped from the roof of a building; 1.20 seconds after that, a second stone is thrown straight down with an initial speed of 22m/s, What are the speeds of the two stones just before they hit the ground
sled is being pulled across a cement sidewalk at constant velocity. the coefficient of friction mu between the cement
Suppose a 65 kg person stands at the edge of a 6.5 m diameter merry-go-round turntable that is mounted on frictionless bearings and has a moment of inertia of 1850 kg m2. Calculate the angular velocity of the turntable
Calculate the maximum torque that can be applied to the pedals of a bicycle by a rider with a body mass of 74.0 kg, if the pedalarm is 20.0 cm long.
A discus thrower (with arm length of 1.2 m) starts from rest and begins to rotate counterclockwise with an angular acceleration of 1.5rad/s2. What is the tangential acceleration of the discus thrower at this point
Describe what are the (a) magnitude and (b) direction of the boat's velocity relative to the ground? (c) How long does the boat take to cross the river?
At its farthest point, the three-point line is 7.24 meters away from the basket in the NBA. A basketball player stands at this point and releases his shot from a height of 2.05 meters at a 35.0 degree angle.
a sled of mass m is given a kick on a frozen pond. the kick imparts to it an initial speed of 2.80 ms. the coefficient
An electron has an initial velocity of 8.00 106 m/s in a uniform 7.00 105 N/C strength electric field. How long does it take the electron to come to rest
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