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A candle is placed 12.0 cm in front of a convex mirror. When the convex mirror is replaced with a plane mirror, the image moves 8.5 cm farther away from the mirror. Find the focal length of the convex mirror.
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Question: You are experimenting with a radioactive sample of polonium. At the end of 14.0 minutes, exactly 1/16 of the polonium remains. What is the corresponding half life (T 1/2 ) of polonium? The response must be type ...
Problem: An athlete performing a long jump leaves the ground at a 28.2 degree angle and lands 7.67 m away. A) What was the takeoff speed? B) If this speed were increased by just 5.0%, how much longer would the jump be?
A slab of clay with a mass of 0.26 kg, moving with a speed of 5.24 m/s, hits a stationary toy car of mass 0.54 kg. If the clay hits and sticks to the car, what is the speed of the clay and car (which are now moving fused ...
Question: A point charge with charge q_1 is held stationary at the origin. A second point charge with charge q_2 moves from the point (x1, 0) to the point (x2, y2). How much work W is done by the electrostatic force on t ...
Problem: The orbital speed of the Sun relative to the center of the Milky Way is about 250 km/s. By what fraction do the relativistic and Newtonian values differ for (a) the Sun's momentum and (b) the Sun's kinetic energ ...
1) Evaluate (5.0000 * 10^7)(3.80 * 10^-16). Report 2 decimals for result 2) 1,400 kg car moving at 7.0 m/s is stopped by action of it braces. The work done by the car braces is .....Joules. Response in 2 decimals. 3) The ...
Problem: A block oscillating on a spring has a maximum speed of 20cm/s. What will be the block's maximum speed if its totalenergy is doubled? Explain. (in its simplest form of physics,please) The response must be typed, ...
Question: Orangutans can move by brachiation, swinging like a pendulum beneath successive handholds. If an orangutan has arms that are 0.90 m long and repeatedly swings to a 20° angle, taking one swing immediately after ...
Question: As a roller coaster car crosses the top of a 48.01-m-diameter loop-the-loop, its apparent weight is the same as its true weight. What is the car's speed at the top? The response must be typed, single spaced, mu ...
The wind blows with a speed of 31.9 m/s over the roof of your house. Assuming the air inside the house is relatively stagnant, what is the pressure difference at the roof between the inside air and the outside air? Answe ...
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