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People on Earth see the atmosphere change from blue to red at sunset. Consider an astronaut orbiting the Earth looking at their sunset. How will their sunset differ in color? Explain.
Two steel guitar strings have the same length. String A has a diameter of 0.59 and is under 410.0 of tension. String B has a diameter of 1.5 and is under a tension of 800.0 . Find the ratio of the wave speeds, VA/ VB, in these two strings
A constant force of 25 N is applied as shown to a block which undergoes a displacement of 7.5 m to the right along a frictionless surface while the force acts. What is the work done by the force
As a bacterium swims through water it propels itself with its flagella so as to overcome the frictional drag forces and move at, more or less, constant velocity of 100 micrometers/s for periods of time. If the frictional drag force on a bacterium is ..
In a circut all six resistors share the same value R. Calculate the equivalent resistance between points A & B
A 70 g metal block moving at 200 cm/s slides across a tabletop a distance of 83 cm before it comes to rest. how much does the temperature of the block rise
Two automobiles of equal mass approach an intersection. One vehicle is traveling with velocity 12.3 m/s toward the east, find the initial speed of the northward-moving vehicle
A 15.0 kg block of ice at 0 degrees C falls into Lake Superior, which is a freshwater lake. What is the change in entropy, delta S, of the lake
The central star of a planetary nebula emits ultraviolet light with wavelength 104nm. What is the first-order diffraction angle
a stepladder consists of two halves hinged at the top and connected by a tie rod that keeps the two halves from
A glass window 0.35 cm thick measures 81 cm by 36 cm. How much heat flows through this window per minute if the inside and outside temperatures differ by 17° C
question1astronomers detect a large asteroid that far away but still heading toward earth at 754 ms. a straight
A graph depicts force versus position. What represents the work done by the force over the given displacement?
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