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What is the total mass of the Earth’s atmosphere? (The radius of the Earth is 6.37 x 10 6 m, and atmospheric pressure at the surface is 1.013 x10 5 N/m2 ). Think about why we can use such a simple equation to find the mass of the Earth’s atmosphere? Is this answer exact? Does this answer change with time?
When these waves move into a shallower part of the lake, their speed decreases to 1.6 m/s, though their frequency remains the same. Find out the wavelength of the waves in the shallower water.
Type your question hereSuppose you look through a 3.9 mm thick window comprised of a material whose refractive index is 1.58. By how many wavelengths is it delayed, if its vacuum wavelength is 600 nm
a mass of 1000kg hangs at the end of a steel rod 5.0m in length. The diameter of the rod is .8 cm and young's modulus for the rod is 210,000NM/m^2. what is the elongation of the rod
Consider a thin rod of mass 3.7 kg, length 1.8m and uniform density. The rod is pivoted at one end on a frictionless horizontal pin
question1a student who weighs 490 n is wearing a backpack that weighs 88 n. the student is standing still on level
How many electrons would have to be added to one of these spheres to make it electrically neutral?
Suppose you are riding a stationary exercise bicycle, and the electronic meter indicates that the wheel is rotating at 12.7 rad/s. how far would you have gone if the bike could move
A 1.0-cm-diameter pipe widens to 2.0 cm, then narrows to 0.5 cm. Liquid flows through the first segment at a speed of 5.0 m/s. What is the speed in the third segment
A brass rod with a length of 20.0 cm is placed side by side with an aluminum rod with a length of 20.0 cm, What is the heat flow from the hot temperature to the cold temperature
A proton moves perpendicular to a uniform magnetic field at a speed of 2.00 107 m/s, Determine the magnitude and direction of the field
Consider a large chemical storage tank that is 100 ft in diameter and 25 feet tall. What is the force exerted by the fluid on the base of the tank
A gallon of gasoline contains about 1.3x10^8 joules of energy. A 2000-kg car traveling 20 m/s skids to a stop. Estimate how much gasoline it will take to bring the car back to the original speed
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