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A 2 centimeter tall object is located in front of a mirror. A 1 centimeter tall upright image is formed behind the mirror, 180 centimeter from the object. Evaluate the focal length of the mirror?
a transformer with 120 turns in its secondary supplies 12 volts at 220 ma to a toy train. the primary is connected
The intensity level produced by a jet airplane at a certain location is 163 dB. Calculate the intensity of the sound wave generated by the jet at the given location.
Four identical charges (+2uC each) are brought from infinity and fixed to a straight line. The charges are located .4 m apart. Determine the electric potential energy of this group.
Two narrow slits 0.286 mm apart are illuminated by light of wavelength 542. nm. The light falls on a screen 1.60 m away from the slits. What is the angular seperation between adjacent maxima
A loop of wire has the shape shown in the drawing. The top partof the wire is bent into a semicircle of radius r = 0.25m. The normal to the plane of the loop is parallel to a constantmagnetic field of magnitude 0.94 T.
consider a conical pendulum that consists of a bob on one end of a string of negligible mass with the other end of the
An electron is released a short distance above the surface of the Earth. Find how far below the first electron is the second
The highest recorded waterfall in the world is found at Angel Falls in Venezuela. Its longest single waterfall has a height of 807 m. what is the maximum temperature of the water at the bottom of the falls
The two hot-air balloons in the drawing are 48.2 m and 61.0 m above the ground. A person in the left balloon observes that the right balloon is 13.3° above the horizontal.
The rain-soaked shoes of a person may explode if ground current from nearby lightning vaporizes the water. Find what average current is required to vaporize the water
A room has dimensions 2.84 m (height) × 4.91 m × 6.79 m. A fly starting at one corner flies around, ending up at the diagonally opposite corner. What is the magnitude of its displacement
Clarify how Einstein's contribution to understanding the force between the earth and the moon differed from Newton's. Include a short statement of Einstein's explanation in the answer.
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