Two vertical tubes of equal cross-sectional areas are filled with liquids to heights producing atmospheric pressure at their bottoms. One liquid is water and the other is mercury. Both liquids have equal
A) volumes.
B) densities.
C) weights.
D) viscosity.
E) none of the above
Answer: C
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Single-Slit Diffraction: A single slit, which is 0.0500 mm wide, is illuminated by light of 550 nm wavelength. What is the angular separation between the first two minima on either side of the central maximum?
Fill in the blank(s) with the appropriate word(s).
Sunsets are red because sunlight must pass through more atmosphere then, and the atmosphere scatters even more light at bluer wavelengths, leaving mostly red light to color the sky
Indicate whether the statement is true or false
A series RC circuit has a time constant of 1.0 s. The battery has a voltage of 50 V and the maximum current just after closing the switch is 500 mA. The capacitor is initially uncharged. What is the charge on the capacitor 2.0 s after the switch is closed?
a.
0.43 C
b.
0 66 C
c.
0.86 C
d.
0.99 C
The number of reliably known digits in a number is called the number of estimated uncertainty
Indicate whether the statement is true or false