In ultrasound the wavelength of the sound is much smaller than in normal sound
a. True
b. False
Indicate whether the statement is true or false
True
Physics & Space Science
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Why are massive stars more luminous than low mass stars? That is, why is there a mass-luminosity relation?
What will be an ideal response?
Physics & Space Science
The corona and chromosphere are hotter than the photosphere
Indicate whether the statement is true or false
Physics & Space Science
A highway curve of radius 100 m, banked at an angle of 45°, may be negotiated without friction at a speed of
A) 22 m/s. B) 31 m/s. C) 44 m/s. D) 67 m/s.
Physics & Space Science
The figure shows a distance vs. time graph of an object with three distinct regions, I, II, and III
?
The object’s acceleration is zero only in region II.
a.
True
b.
False
Physics & Space Science