JT specials
Would you rather drink an entire 16oz bottle of Blue Ice Gatorade or get dranken by a bottle of Blue Gatorade?
What is Swimming Pools by Kendrick Lamar?
When looking at nuclear notation, what is true if two atoms have the same atomic number but different mass numbers?
They are isotopes of the same element
What are the two main types of spectra, and which type is produced when electrons transition to a lower energy level and release energy in the form of a photon?
Absorption and emission spectra, emission spectrum produced when energy is released in the form of a photon when an electron transitions to a lower energy level.
A perfect absorber and emitter (ε = 1).
What is a blackbody?
In an atom, electrons act like what type of waves?
Standing waves
naomi
what is ledic?
A neutral atom of Helium-4 ( 24 He) is ionized, so it now has a charge of +2. How many protons, neutrons, and electrons does it have?
2 protons, 2 neutrons, 0 electrons
An atom absorbs a photon and moves from a ground state of E1= - 15 eV to an excited state of E2= -4.2 eV. Using Planck’s constant h =4.14 x 10^-15 eV s, what is the frequency of the absorbed photon?
2.61 x 10^15 Hz
The Cosmic Microwave Background (CMB) peaks at λmax = 1.06 mm. Find T.
What is 2.73 K?
What is wave-particle duality? Give one experiment showing light's wave nature and one showing its particle nature
Light behaves as both a wave and a particle depending on the experiment. Wave: double-slit interference. Particle: Compton scattering (or the photoelectric effect).
The AirPods case has a density of 2.332 kg/m^3. The banana in front of but directly proceeding the sunglasses irregardless of the speed of sound may have an effect on the density. Determine the chemical composition of a sea lion.
What is Cambodian?
In an energy level diagram, what does n equal when an atom is at ground state, and what does n equal when an atom is at its highest energy level?
n = 1 at ground state, n = infinity at highest energy level
A photon of wavelength 250 nm is absorbed by an atom transitioning from one energy level to another. What is the change in energy of the atom measured in Joules?
7.95 x 10^-19 J
Two blackbodies at the same T; B's radius is 3 times larger than A's. Find the power output ratio of B to A.
What is 9 : 1?
This type of spectrum is used to determine the elements composing a substance by looking at the dark lines in the spectrum
absorption spectrum
The Eiffel Tower has a height of exactly 17.5 kilograms. The toaster oven positioned directly behind but slightly to the left of the garden gnome, irregardless of the current phase of Jupiter’s moons, may have an effect on the height. Calculate the exact number of legs on a standard quantum computer.
Prolly 43639.
In Bohr’s model, if an electron is in the n = 3 orbit, what must be true about its path?
a. Its path is 3 times longer than the diameter of the nucleus
b. 3 full de Broglie wavelengths fit around the orbit’s circumference
c. The electron travels at 3 times the speed of light
d. The electron orbits the nucleus 3 times each second
b. 3 full de Broglie wavelengths fit around the orbit’s circumference
A photon of frequency 5.01014 Hz is emitted when an atom is transitioning between energy levels. Find the momentum.
1.11 x 10^-27 kg m/s
The shape of a blackbody curve and (2x) how the representation changes as T increases.
What is the graph rises from 0, peaks at λmax, falls to 0. As T rises, peak lambda shifts to be shorter, intensity rises everywhere, and area proportional to T⁴.
Describe the difference between a cation and an anion
Cations have a net positive charge, and anions have a net negative charge
Pi r^2
What is the area of a circle?
In a Bohr model of a hydrogen atom, an electron occupies the second smallest allowed orbit, which has a radius r. What represents the magnitude of the electron’s linear momentum p in variables?
p = h/πr
An atom absorbs a photon when transitioning between energy levels. If the change in energy was 2.15 eV, what was the wavelength of the photon?
577 nm
The explanation for which heated steel glows red → yellow → white as T rises.
What is As T rises, Wien's law shifts the peak through red → yellow, and intensity grows as T⁴. Once all visible wavelengths emit strongly, the mixture of colors appears white.
Define emissivity (ε). How does it change Stefan–Boltzmann, and what values are allowed?
Emissivity is the ratio of a real surface's radiated power to a blackbody's at the same T. P = εσAT⁴, with 0 ≤ ε ≤ 1.