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What is the angle between a wire carrying 8.30 A and the 1.20 T field it is in, if 50.0 cm of the wire experiences a magnetic force of 2.80 N?
What is the force on the wire if it is rotated to make a 90° angle with the field?
A person is riding a bicycle, and its wheels have an angular velocity of +23.0 rad/s. What is the angular acceleration of each wheel
A mechanic pushes a 2.80 103-kg car from rest to a speed of v, doing 4,650 J of work in the process. During this time, the car moves 26.0 m. calculate the horizontal force exerted on the car
A block of the same weight as the meter stick is suspended from the stick, as shown, at a distance x from the wall. What is the minimum value of x for that the stick will remain in equilibrium.
The technique known as potassium-argon dating is used to date old lava flows and thus any fossilized skeletons found in them, What is the age of a piece of solidified lava with a ^40Ar/^40K ratio of 0.31
A helicopter propeller blade starts from rest and experiences a constant angular acceleration of 17.0 rad/s2. Find the speed of a point on the blade 4.95 m from the axis of rotation
A radio reciever can pick up signals with peak electric fields as weak as 425muV/m. What is the average intensity of such a signal
Suppose a rocket ship in deep space moves with constant acceleration equal to 9.80 m/s2, which gives the illusion of normal gravity during the flight. How far will it travel in so doing
A particle of mass m is attracted to a force center with force of magnitude k/r2. Use plane ploar coordinates and find Hamilton's equations of motion.
A mass of 50 kg hangs from a cable that, in turn, is tied to two other cables, What are the tensions in the two upper cables, TL and TR
Illustrate what is the general direction of the airplane's velocity? east of south, north of west,north of east, or west of south?
Scientist develop a new heat lamp to keep chicks warm in an incubator. It has a conversion efficiency of 6.5% of its input to radiant energy. how much radiant power does it output
Two blocks hang from either end of a massless rope that runs over a pulley, treated as a thin solid disk, (An Atwood's Machine), Find the unknown mass of the block
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