Question 1
which of the following statements is a valid hypothesis for the work we are a...
Question 1
which of the following statements is a valid hypothesis for the work we are about to do?
if we change the frequency of the string vibration, then the length of the string allowed to vibrate will change
if we change the length of the string allowed to vibrate, then the frequency (and pitch) of the string vibration will change.
if we change the tension of the string allowed to vibrate, then the frequency (and pitch) of the string vibration will change.
if we use an oscilloscope, then the frequency (and pitch) of the string vibration will change.
question 2
the frequency of the 15.0cm string is how many times higher than the frequency of the 30.0cm string?
4
3
2
1
question 5
will the long bars or the short bars on a xylophone play higher-pitched sounds?
long bars
short bars
Answers: 1
Physics, 22.06.2019 05:30
The a992 steel rod bc has a diameter of 50 mm and is used as a strut to support the beam. determine the maximum intensity w of the uniform distributed load that can be applied to the beam without risk of causing the strut to buckle. take f.s. = 2 against bucklin
Answers: 3
Physics, 22.06.2019 06:30
If an atom contains 11 protons in its nucleus, predict the element with the atomic number and electronic configuration. will the number of electrons remain the same during the chemical reaction in such an atom? explain.
Answers: 3
Physics, 22.06.2019 13:40
Awind turbine is rotating counterclockwise at 0.5 rev/s and slows to a stop in 10 s. its blades are 20 m in length. (a) what is the angular acceleration of the turbine? (b) what is the centripetal acceleration of the tip of the blades at t=0s? (c) what is the magnitude and direction of the total linear acceleration of the tip of the blades at t=0s?
Answers: 1
Physics, 22.06.2019 14:00
Select for each of the following statements whether it is correct or incorrect. (a) in an isothermal expansion of an ideal gas. (b) the temperature remains constant. (b) the pressure remains constant. (c) there is work done by the gas. (d) there is heat added to the gas. (e) the change in internal energy equals zero.
Answers: 1
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