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What is the major fossil-fuel impurity? What are the causes and effects of acid rain? In which areas is acid rain a major problem and why? What is a direct effect on humans that increases with atmospheric ozone depletion?
question1as a fish jumps vertically out of water suppose that only two significant forces act on it an upward force f
A 206 kg cart runs into the rear end of a 102 kg cart that is stationary. What is the speed of the moving cart before the collision
You have two cups, one with m1 = 0.92 kilogram of water at t1 = 29.76oC and the other with m2 = 2.88 kilogram at t2 = 45.6oC. Evaluate the final temperature of the water
A microscope objective lens has a focal length of 10mm. How close should the object be to the objective lens so that the image is formed in the microscope tube 160mm from the objective lens. FYI the answer is 10.67 mm
consider two blocks of wood, one having mass of 1 kg and the other having a mass of 2 kg. What is the net force of the bottom block
An object is 24.2 cm from the center of a silvered spherical glass Christmas tree ornament 5.90 cm in diameter. What is the magnification of its image
A point mass m starts from rest and slides down the surface of a frictionless solid sphere of radius r. Find the angle at which the mass flies off the sphere
A golf ball strikes a hard, smooth floor atan angle of θ = 26.4° and, as the drawing shows, rebounds at the sameangle. The mass of the ball is 0.037kg, and its speed is 45 m/s just before and after striking thefloor. What is the magnitude of the i..
A two-stage rocket accelerates from rest at +3.27 m/s^2 for 6.82seconds. It then accelerates at +2.98 m/s^2 for another 5.90seconds. After the second stage, it enters into a state of freefall.
A refrigerator uses an ideal Carnot cycle to cool its interior. The outside air has a temperature of 302 K and the refrigerator is kept at a temperature of 276 K. find the coefficient of performance of this refrigerator
An alpha particle (mass 4 u) experiences an elastic head-on collision with a nucleus (mass 192 u) that is originally at rest. (The symbol u represents the atomic mass unit.) What fraction of its original kinetic energy does the alpha particle lose?
Two wheels have the same mass and radius of 5.0 kg and 0.39 m,respectively. Find the net external torque thatacts on each wheel
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