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The rechargeable batteries for a laptop computer need a much smaller voltage than what a wall socket provides. There fore, atransformer is plugged into the wall socket and produces the necessary voltage for charging the batteries.
a) Is the transformer a step-up or a step-down transformer? Explain.b) Is the current that goes through the batteries greater than,equal to, or smaller than the current coming from the wall socket?Explain.c) If the transformer has a negligible resistance, is theelectrical power delivered to the batteries greater than, equal to,or less than the power coming from the wall socket? Explain.d) The batteries of a laptop computer are rates at 9.0 V, and acurrent of 225 mA is used to charge them. The wall socket providesa voltage of 120 V. Determine the turns ratio of thetransformer.e) What is the current coming from the wall socket?f) Find the power delivered by the wall socket and the power sentto the batteries.
An iced tea glass is 15 cm tall and has a diameter of 8.0 cm. The glass sits on a garden table on a sunny day and is completely filled to the brim with water, What is the value of the angle
an m1 8.0 kg box lies on a friconless table and is attached to a m2 5.0 kg box by a light cord passing over a
The Earth is showered with particles from space known as muons. What will be the radius of the muon's resulting orbit
A 12 DC power supply is connected to the primary coil of a transformer. What is the rms voltage across the secondary
A transparent photographic slide is placed in front of a converging lens with a focal length of 2.33 cm. An image of the slide is formed 11.4 cm from the slide. How far is the lens from the slide if the image is real
The position vector,r, in meters, of a particle moving in the x-y plane, is giving by the following equation: r=i(2t^2-8t-12)+j(2t^3-18t^2+48t+25), find the direction of the velocity vector at the instant
Two plates of area 743 cm^2 each are separated by a distance 52.3 cm. Calculate the capacitance of the capacitor in microfarads
A satellite in a circular orbit around the earth with a radius 1.019 times the mean radius of the earth is hit by an incoming meteorite. Calculate the amount of that work converted to heat
in a spark ignition engine with compression ratio of 10 the lowest temperature is 200c and the lowest pressure is
Spacecraft A is being overtaken by spacecraft B that is traveling at 0.40c relative to spacecraft A. How far away is spacecraft A when the missile is fired according to spacecraft B
A horse draws a sled horizontally across a snow-covered field. The coefficient of friction between the sled and the snow is 0.175, and the mass of the sled, what is the power needed to accomplish this
Make use of 9.80 for the magnitude of the acceleration because of gravity.
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