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You have a wire of length L = 1.9 m for making a square coil of a dc motor. The current in the coil is I = 1.6 A, and the magnetic field of the motor has a magnitude of B = 0.38 T. Find the maximum torque exerted on the coil when the wire is used to make
(a) a single-turn square coil and
(b) a two-turn square coil.
(a) How much charge can be placed on a capacitor with air between the plates before it breaks down if the area of each plate is 6.00 cm2? (b) Find the maximum charge if bakelite is used between the plates instead of air.
Two coils have the same number of circular turns and carry the same current. Each rotates in a magnetic field acting perpendicularly to its axis of rotation, What is the radius (in cm) of coil 2
You throw a ball straight into the air from a height of 4 feet and with a speed of 5.02 m/s, How far are you from the ball, the moment it hits the ground
What is the speed of the large cart after the collision. A 345 g chunk of gold at 98.5 degrees Celsius is dropped into a 656 g of water at 22.5 degrees Celsius. What will final temperature of the gold be after the system reaches equilibrium.
Juan and Pablo carry a load weighing 720 N on a pole between them. If the weight of the 120-N pole is considered, what force does each person support
ocean waves with wavelength 1.2 m and period 1.5s are moving past a pier. a boy runs along the pier, in the direction opposite to the motion of the wave, at 3.5 m/s. how many wave crests pass the boy each second?
An 825-N sled is pulled a distance of 161 m. The task requires 1.50 ^ 10^4 J of work and is done by pulling on a rope with a force of 137 N. At what angle is the rope held.
The biochemistry that takes place inside cells depends on various elements, such as sodium, potassium, and calcium, that are dissolved in water as ions, What is the resistance of the ion channel
A 3.3-m-diameter merry-go-round with rotational inertia 100kg?m2 is spinning freely at 0.60rev/s. Determine the total energy lost to friction
If the arm is 5.50-m long and pivots about one end, at what angular speed (in rpm) should it spin so that the acceleration of the lander is the equal as acceleration because of gravity at the surface of Europa? The mass of Europa is 4.8 times 10^ ..
The angular position of a pendulum is represented by the equation ? = 0.0310 cos ?t, Determine the period and length of the pendulum
An electron is projected with an initial speed 1.00×106 into the uniform field between the parallel plates. Suppose that field between the plates is uniform and fixed vertically downward, and that field outside the plates is zero. The electron enters..
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