A blackbody emits a continuous spectrum
a. True
b. False
Indicate whether the statement is true or false
True
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A series RC circuit, which is made from a battery, a switch, a resistor, and a 3.45-?F capacitor, has a time constant of 11.0 ms. If an additional 12.0-?F is added in series to the 3.45-?F capacitor, what is the resulting time constant?
a. 38.3 ms b. 8.54 ms c. 1.19 ms d. 14.2 ms e. This cannot be found without the value of the resistance being given.
Compared to the atoms that make up the body of an elderly person, the atoms that make up the body of a newborn baby are
A) newer. B) actually older. C) the same age.
Energy in Nuclear Reactions: An electron and a positron, both essentially at rest, annihilate each other, emitting two identical photons in the process. What is the wavelength of these photons? The mass of an electron or positron is 9.11 × 10-31 kg. (h = 6.626 × 10-34 J ? s, c = 3.00 × 108 m/s)
A. 1.21 × 10-12 pm B. 1.73 pm C. 2.42 pm D. 3.07 pm E. 3.46 pm
Light strikes a diamond (n = 2.42) at an angle of 60° relative to the normal to the surface. What is the angle of refraction?
a. 21° b. 30° c. 38° d. 69° e. 71°