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A transformer connected to a 120-v (rms) at line is to supply 13,000V (rms) for a neon sign. To reduce shock hazard, a fuse is to be inserted in the primary circuit; the fuse is to blow when the rms current in the secondary circuit exceeds 8.50 mA. (a) What is the ratio of secondary to primary turns of the transformer? (b) What power should be supplied to the transformer when the rms secondary current is 8.50 mA? (c) What current rating must the fuse in the primary circuit have?
Suppose you wish to make a solenoid whose self-inductance is 1.5 mH, The inductor is to have a cross-sectional area of 1.7 x 10-3 m2 and a length of 0.046 m
An airtight box has a removable lid of area 1.60 10-2 m2 and negligible weight. What is the magnitude of the force required to pull the lid off the box
While driving north at 25 m/s during a rainstorm you notice that the rain makes an angle of 38 with the vertical. find the speed of the raindrops relative to the ground
A man is riding a bicycle; the wheels of a bicycle have an angular velocity of +17.0 rad/s. Compute what is the angular acceleration of each wheel
two small plastic balls hang from threads of negligible mass. each ball has a mass of 0.14 g and a charge of magnitude
Two ideal polarizers A and B are aligned so that their transmission axis are vertical and horizontal respectively. Assuming that unpolarized light of intensity Io is incident upon the first polarizer (Polarizer A), find an expression for the light ..
The total electric field consists of the vector sum of two parts. One part has a magnitude of E1 = 1300 N/C, Find the magnitude and direction of the total field
there are two balls located in deep space as shown in the figure. the black ball has mass 36kg and the red ball has
When light strikes the surface between two materials from above, the Brewster angle is 61.0°. What is the Brewster angle when the light encounters the same surface from below
An unstrained horizontal spring has a length of 0.31 m and a spring constant of 190 N/m. Two small charged objects are attached to this spring, one at each end. Determine the possible algebraic signs
Object A, which has a mass m and a velocity v0, collides head-on with object B, which has a mass 2m and a velocity 1/2v0. Following the collision, object B has a velocity of 1/4v0. (a) Determine the velocity of object A after the collision. v = ? If ..
If you submerge an 8kg log in water and it displaces 10kg ofwater, what will be the net force on the log be the moment you letgo of the log
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