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A) what is the speed of light as a fraction of its vacuum value within diamand at n=1.42
B) A Convex mirror has a radius of curvature of 1m. the object it reflects is located 2m infront of the mirror. find the magnification ratio, determine the image distance, and specify whether the image is inverted or upright. if the object is 20 cm tall, how tall is its image?
A 56.0-kg projectile is fired at an angle of 30.0° above the horizontal with an initial speed of 1.24 102 m/s from the top of a cliff 146 m above level ground, What is the initial total mechanical energy of the projectile
A 66.0 kg person throws a 0.0410 kg snowball forward with a ground speed of32.0 m/s. A second person, with a mass of 60.0 kg, catches the snowball. Both people are on skates. The first person is initially moving forward by a speed of 2.50 m/s, and th..
A bat flying at 5.25 m/s is chasing an insect in the same direction. The bat emits a 40.10-kHz chirp and receives back an echo at 40.50 kHz. What is the speed of the insect
During a lunar eclipse, a picture of the moon (which has a diameter of 3.48 × 106m and is 3.86 × 108m from the earth) is taken with a camera whose lens has a focal length of 320mm. What percent is this of the width of a 24mm × 36mm color slide
A 10 kilogram lead ball is dropped from a height of 30 m and it hits the floor at a speed of 20 m/s. Find how much mechanical energy is lost to air resistance
A 25.0g bullet moving at 900 m/s is fired through a 0.900 kg block of wood emerging at a speed of 100 m/s. what is the resulting speed
astronauts use a centrifuge to simulate the acceleration of a rocket launch. the centrifuge take 20.0 seconds to reach top speed, what is the astronauts tangential acceleration during the first 20.0 s
A T-bar tow is used to pull 80 skiers up a 600-m long slope inclined at 15.0 degrees to the horizontal at a speed of 2.5m/s. Find the motor power required to run the T-bar
Suppose now that you are at rest relative to the raft standing at the rear end except this time the raft is in the middle of the lake moving at a speed of 4.0 m/s. find the raft's speed relative to a stationary observer
A sinusoidal wave is propagating along a stretched string that lies along the x-axis. The displacement of the string as a function of time is graphed in the figure for particles at x = 0 and at x = 0.0900 m. What is the amplitude of the wave? What ..
A horizontal platform the shape of a circular disk rotates in a horizontal plane about a frictionless vertical axis by an initial angular speed ?A dog (mass m) is initially riding the merry-go-round at its rim, however then slowly walks toward the ce..
In an AC circuit that contains a resistor, A capacitor, and an inductor, impedance replaces the DC concept of resistance . Explain briefly the difference between the two quantities .
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