Magnification-image
An object 2.15 cm tall is placed 13.5 cm in front of a mirror, which creates an upright image that is 5.30 cm in height.
a) What is the magnification of the image?
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Two point charges each have a value of 30.0mC and are separated by a distance of 4.00cm. What is the electric field midway between two charges?
Two devices with capacitances of 18 µF and 7.4 µF are each charged with separate 120 V power supplies. Calculate the total energy stored in the two capacitors.
A car is driven 155 km west and then 75 km southwest. What is the displacement of the car from the point of origin (magnitude and direction)?
The sketch shows a thin film of soapy water of uniform thickness and index of refraction suspended in air. Consider rays 1 and 2 emerging from the film.
An object 2.15 cm tall is placed 13.5 cm in front of a mirror, which creates an upright image that is 5.30 cm in height. What is the magnification of the image?
The sunbather, still wearing the glasses, lies on his side. What fraction of the light intensity received before the glasses were put on now reaches his eyes?
Ignoring all the frictional forces and assuming the pulley has no mass, find the acceleration of the two blocks, and the tension in the cord.
If the heavier block is removed and a downward force of 908 Newton's is supplied by a man pulling on the rope, what is the acceleration of the 412 Newton block? Why are the answers to (a) and (b) different?
During the acceleration there is a tension of 9410 Newton's in the hoisting cable. What does the scale read during the acceleration?
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