Music requires a higher bit depth than an audio recording of a person speaking.
Answer the following statement true (T) or false (F)
True
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A grandfather clock keeps time using a pendulum whose length is finely adjustable. If you have a grandfather clock that is running fast, should you shorten or lengthen the pendulum?
A. Shorten it B. Lengthen it C. You should reduce its mass D. You should add mass to it
Why has NASA sent recent orbiters to Mars on trajectories that required them to skim through Mars's atmosphere before settling into their final orbits?
A) It saves money because the spacecraft uses atmospheric drag to slow down rather than needing to carry enough fuel to slow by firing rocket engines. B) It allowed the orbiters to get higher resolution pictures of the surface as it came close when skimming through the atmosphere. C) It allowed the spacecraft to collect samples of the atmospheric gas for return to Earth. D) Each spacecraft also carried a lander, and the lander could only be dropped to the Martian surface when the spacecraft passed through the atmosphere.
The lowest A on a piano has a frequency of 27.5 Hz. If the tension in the 2.0-m long string is 151 N and one-half wavelength occupies the string, what is the mass of the string?
a. 100 g c. 37 g b. 25 g d. 50 g
A two-shell-four-tube-pass heat exchanger has an overall heat exchanger conductance of 350 W/m^2?K and is used to cool 10 kg/s of engine oil from 180ºC to 80ºC. If water at 20ºC is used to cool the oil and the water temperature leaving the heat exchanger is 60ºC, determine (a) mass flow of water required and (b) surface area of the heat exchanger.
What will be an ideal response?