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A tall tree is growing across a river from you. You would like to know the distance between yourself and the tree as well as its height but you are unable to make the measurements directly. However, by using a mirror to form an image of the tree and then measuring the image distance and image heigh, you can calculate the distance to the tree as well as its height. Suppose that this mirror produces an image of the sun, and the image is located 0.9000m from the mirror. The same mirror is then used to produce an image of the tree. The image of the tree is 0.9100m from the mirror. (A), How far away is the tree? (B) The image height of the tree has a magnitude of 0.12m. How tall is the tree?
When the galvanometer in a wheatstone bridge circuit shows no deflection, explain why are the voltages across opposite branches on each side of the galvanometer necessarily equal?
An athlete performing a long jump leaves the ground at a 34.4? angle and lands 7.65m away, What was the takeoff speed
snow is falling vertically at a constant speed of 6.5 ms. at what angle from the vertical do the snowflakes appear to
It is found experimentally that the electric field in a certainregion of Earth's atmosphere is directed vertically down. At analtitude of 260 m the field hasmagnitude 60.0 N/C. At an altitude of 190 m, the magnitude is 100 N/C.
A rocket powered sled accelerates uniformly from 12m/s to 115m/s while undergoing a straight line path displacement of 225m. What is the acceleration of the sled
A car of mass = 1200 traveling at 65 enters a banked turn covered with ice. The road is banked at an angle , and there is no friction between the road and the car's tires. What is the radius of the turn if = 20 (assuming the car continues in unifo..
The conduction electrons in a metal can be considered for some purposes as an ideal gas. Find the beam current in amperes
A boy throws a 1.5 kg rock upward. To do so the boy applies a constant 38.5 N force upwards on the rock from point a to point b. after that the rock continues upward to its highest height at point c.
A man can row a boat at a speed of 7.45 km/h in still water. If he is crossing a river where the current is 2.00 km/h, find what direction should his boat be headed
A solenoid is wound with 470 turns on a form 4 cm in diameter and 50 cm long. What is the current in the solenoid windings
A plane surface with area 1.5 m2 is placed in a uniform magnetic field of 6.0 T that is oriented at an angle of 20 degrees to the surface. What is the magnetic flux through this area
our sun is 2.3 x 104 ly light-years from the center of our milky way galaxy and is moving in a circle around that
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