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A solenoid contains 780 coils of very thin wire evenly wrapped over a length of 17.5cm . Each coil is 2.50cm in diameter.
a) If this solenoid carries a current of 7.40 A , what is the magnetic field at its center?
man pulls a block of mass m = 15 kg up an incline at a slow constant velocity for a distance of d = 4.5 m. The incline makes an angle q = 35° with the horizontal. What is the work Wm done by the man
A boy of mass 43.5 kg is initially on a skateboard of mass 2.00 kg, moving at a speed of 10.3 m/s. Find the final velocity of the skateboard
The sliding bar in the figure has a length of 0.513 m and moves at 1.76 m/s in a magnetic field of magnitude 0.263 T. Calculate the magnetic force on the bar
A father (m = 90 kg) and son (m = 45 kg) are standing facing each other on a frozen pond. The son pushes on the father and finds himself moving backward at 3 m/s after they have separated. How fast is the father moving.
A lamp hangs vertically from a cord in a descending elevator with a constant deceleration a. If the tension in the cord is T0, answer the following, What is the lamp's mass
A rocket is launched at an angle of ? = 46° above the horizontal with an initial speed vi = 50 m/s, What is the rocket's total time of flight
Catapult fires an 800-kg rock with an initial velocity of 100 m/sat a 40° angle from ground. What is the magnitude of the horizontal impulse
An X-ray photon with a wavelength of 0.250nm nm scatters from a free electron at rest. Find the initial momentum of the photon
What types of lifestyle changes will be brought about by living in a house whose space heating and hot water needs are supplied almost completely by the sun.
Find the change in momentum of a 1140kg car that increases its speed from 4.5 m/s to 18.0 m/s in a time of 19s while travelin in the same direction
In an ultrahigh vacuum system (with typical pressures lower than 10?7 pascal), find the number of molecules in a volume of 1.70 m3
What is the rotational kinetic energy of the Earth? Use the moment of inertia you calculated in Part A rather than the actual moment of inertia given in Part B.
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