A string with a mass per length of 2.00 g/m is stretched between two points that are 0.400 m apart. The third mode frequency of the stretched string is 20.0 Hz lower than the fourth mode frequency. What is the tension in the string?
A. 180 N
B. 160 N
C. 140 N
D. 120 N
E. 100 N
A. 180 N
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Fluid Flow: A pump uses a piston of 15 cm diameter that moves at 2.0 cm/s as it pushes a fluid through a pipe. What is the speed of the fluid when it enters a portion of the pipe that is 3.0 mm in diameter? Treat the fluid as ideal and incompressible.
A. 50 m/s B. 50 cm/s C. 6.0 cm/s D. 22 cm/s
If you could measure the mass of a moving object, you would find that it was greater than its value when stationary
Indicate whether the statement is true or false
Why would a decrease in the amount of ozone in the atmosphere increase the likelihood of people getting sunburn?
a. Global temperatures would rise b. More ultraviolet radiation would reach the ground c. People would be exposed to more infrared radiation d. The premise is incorrect. Ozone and sunburn are not related
A depression on the land surface caused by the collapse of a cavern is called
a. a sinkhole. b. a shrink pit. c. a culvert. d. none of the above.