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The image of a tree just covers the length of a plane mirror 3.60cm tall when the mirror is held 38.0cm from the eye. The tree is 24.0m from the mirror.
What is the tree's height?
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 ..
In the amusement park ride known as Magic Mountain Superman, Find the average net force exerted on the car and riders by the magnets
The apparatus show in firgure P11.8 was used by Joule tomeasure the mechanical equivalent of heat. what is the increase in tempterature of the water
Two small plastic balls hang from threads of negligible mass. Each ball has a mass of 0.170 g and a charge of magnitude q. Find the magnitude of the charge on the balls
If the electric field is zero in some region of space, the electric potential must also be zero in that region. If the electric potential is zero at a point, the electric field must also be zero at that point. Electric field lines always point towar..
Westerly winds coming off the Pacific Ocean rise over the Rocky Mountains, which rise to a height of approximately 15,000 ft (580 hPa). The air on the western side of the mountain range is at 800 hPa (T = 70F, r = 0.75), and will subside on the easte..
A boat moves through the water with two forces acting on it. One is a 1500 N forward push by the water on the propeller, What is the acceleration of the 1400 kg boat
The captain of a boat wants to travel directly across a river that flows due east with a speed of 1.00 m/s. Estimate the speed of the boat relative to a person
An electrical heating coil is immersed in 4.0kg of water at 21 degrees C. What is the potential difference at which the coil operates
Sucrose is allowed to diffuse along a 8.0 cm length of tubing filled with water. Thetube is 6.2 cm2 incross-sectional area. The diffusion coefficient is equal to 5.0 X10-10 m2/s, and 8.0 X 10-14kg is transported along the tube in 11s.
The plates of a 7.4-µF capacitor have net charges of +0.83 µC and -0.83 µC respectively. Which plate is at the higher potential
During an Apollo lunar landing mission, the command module continued to orbit the Moon at an altitude of about 111 km. How long did it take to go around the Moon once
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