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The water passing over Victoria Falls, located along the Zambezi River on the border of Zimbabwe and Zambia, drops about 108 m. How much internal energy is produced per kg as a result of the fall?
An object of heat capacity 100 cal/°C is initially at 30°C. Estimate the resulting entropy change of the universe
The indices of refraction for violet light (? = 400 nm) and red light (? = 700 nm) in diamond are 2.46 and 2.41, Calculate the angular separation between these two colors of light in the refracted ray
A 770 kg car moving at 21 m/s brakes to a stop. The brakes contain about 15 kg of iron, which absorbs the energy. What is the increase in temperature of the brakes.
Outline what you know about Plasmonics? Outline what you know about Raman spectroscopy and surface enhanced Raman spectroscopy?
A dolphin in seawater at a temperature of 25 °C makes a chirp. How much time passes before it hears an echo from the bottom of the ocean, 208 m below.
Consider a 7 solar mass main sequence star, Estimate its luminosity in solar luminosities and how long (in years) it could maintain its luminosity through gravitational collapse
Two tugboats pull a disabled supertanker. Each tug exerts a constant force of 1.20×106N, What is the total work done by the two tugboats on the supertanker
What is the height of the power line and the initial speed of the ball?
Two satellites are in circular orbits around the earth. The orbit for satellite A is at a height of 363 km above the earth's surface, Find the orbital speed for satellite A and satellite B
The radii of curvature of the surfaces of a thin converging meniscus lens are R1= 12.0 cm and R2 = 28.0 cm, Compute the position and size of the image of an object in the form of an arrow 5.00 mm tall, perpendicular to the lens axis
A uniform plank of length 4.3 m and weight 201 N rests horizontally on two supports, with 1.1 m of the plank hanging over the right support (see the drawing). To what distance x could a person who weighs 449 N walk on the overhanging part of the p..
A 1.00 kg glider on a horizontal air track is pulled by a string at an angle θ. The taut string runs over a pulley and is attached to a hanging object of mass 0.500 kg .
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