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A transformer is to be used to provide power for a computerdisk drive that needs 6.0 V (rms) instead of the 120 V (rms) fromthe wall outlet. The number of turns in the primary is 400,and it delivers 500 mA (the secondary current) at an output voltageof 6.0 V (rms).
(a) Should the transformer have more turns inthe secondary compared with the primary, or fewer turns?
(b) Find the current in the primary.
(c) Find the current in the secondary.
A small sphere whose mass is 7.00E-03 g. carries a charge of 2.00E-08 C. Calculate the surface charge density (in coulombs/meter^2) for the sheet
A merry-go-round is stationary. A dog is running on the ground just outside its circumference, moving with a constant angular speed of 0.775 rad/s. At what time will the dog reach the bone
Find the frequency of a certain blue-green light that has a wavelength of 600 nm in air. Take the speed of light 3x10^8 m/sec.
Romeo(77.0kg) entertains Juliet(55.0kg) by playing his guitar from the rear of heir boat at rest in still water, 2.70 m away from Juliet, How far ados the 80.0 kg boat move toward the shore it is facing
An extreme distance runner is having an easy training day and runs 34 km west over 3 hours, Calculate his/her distance, displacement, speed and velocity for the entire training session
A cylindrical tank with a large diameter is filled with water to a depth D = 0.298 m. What is the rate at which water flows out
Consider a grounded conducting sphere of radius "a" in the presence of a point charge "Q" a distance "D" away from the center of the sphere. How do you show the electric field E is everywhere normal of the sphere, and how do you find the induced char..
The tungsten filament of a certain 100 W light bulb radiates 2.50 W of light. (The other 97.5 W is carried away by convection and conduction.), Find the filament's temperature
Radio waves are electromagnetic waves that travel at a speed of 3.00 108 m/s, the speed of light. Find the wavelength of these radio waves
A 1500 kg car traveling at 90 km/h east collides with a 3000kg car travling at 60 km/h south. What is the speed of the cars after collision
A Michelson interferometer uses light from glowing hydrogen at 486.1 nm. As you move one mirror, 530 bright fringes pass a fixed point in the viewer. How far did the mirror move.
Vector A is 5.5 cm long and points along the x axis. Vector B is 7.5 cm long and points at +30° above the negative x axis. Determine the sum of these two vectors in terms of magnitude and direction
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