Subjects

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Ch 01: Intro to Physics; Units | 1hr & 22mins | 0% complete | |||

Ch 02: 1D Motion / Kinematics | 4hrs & 13mins | 0% complete | |||

Ch 03: Vectors | 2hrs & 2mins | 0% complete | |||

Ch 04: 2D Kinematics | 2hrs | 0% complete | |||

Ch 05: Projectile Motion | 2hrs & 57mins | 0% complete | |||

Ch 06: Intro to Forces (Dynamics) | 3hrs & 2mins | 0% complete | |||

Ch 07: Friction, Inclines, Systems | 2hrs & 43mins | 0% complete | |||

Ch 08: Centripetal Forces & Gravitation | 2hrs & 53mins | 0% complete | |||

Ch 09: Work & Energy | 1hr & 52mins | 0% complete | |||

Ch 10: Conservation of Energy | 2hrs & 12mins | 0% complete | |||

Ch 11: Momentum & Impulse | 2hrs & 37mins | 0% complete | |||

Ch 12: Rotational Kinematics | 3hrs & 4mins | 0% complete | |||

Ch 13: Rotational Inertia & Energy | 7hrs & 7mins | 0% complete | |||

Ch 14: Torque & Rotational Dynamics | 2hrs & 9mins | 0% complete | |||

Ch 15: Rotational Equilibrium | 4hrs & 10mins | 0% complete | |||

Ch 16: Angular Momentum | 3hrs & 6mins | 0% complete | |||

Ch 17: Periodic Motion | 2hrs & 17mins | 0% complete | |||

Ch 19: Waves & Sound | 3hrs & 25mins | 0% complete | |||

Ch 20: Fluid Mechanics | 4hrs & 39mins | 0% complete | |||

Ch 21: Heat and Temperature | 4hrs & 9mins | 0% complete | |||

Ch 22: Kinetic Theory of Ideal Gasses | 1hr & 40mins | 0% complete | |||

Ch 23: The First Law of Thermodynamics | 2hrs & 15mins | 0% complete | |||

Ch 24: The Second Law of Thermodynamics | 4hrs & 56mins | 0% complete | |||

Ch 25: Electric Force & Field; Gauss' Law | 3hrs & 32mins | 0% complete | |||

Ch 26: Electric Potential | 1hr & 55mins | 0% complete | |||

Ch 27: Capacitors & Dielectrics | 2hrs & 2mins | 0% complete | |||

Ch 28: Resistors & DC Circuits | 3hrs & 20mins | 0% complete | |||

Ch 29: Magnetic Fields and Forces | 2hrs & 35mins | 0% complete | |||

Ch 30: Sources of Magnetic Field | 2hrs & 30mins | 0% complete | |||

Ch 31: Induction and Inductance | 3hrs & 38mins | 0% complete | |||

Ch 32: Alternating Current | 2hrs & 37mins | 0% complete | |||

Ch 33: Electromagnetic Waves | 1hr & 12mins | 0% complete | |||

Ch 34: Geometric Optics | 3hrs | 0% complete | |||

Ch 35: Wave Optics | 1hr & 15mins | 0% complete | |||

Ch 37: Special Relativity | 2hrs & 10mins | 0% complete | |||

Ch 38: Particle-Wave Duality | Not available yet | ||||

Ch 39: Atomic Structure | Not available yet | ||||

Ch 40: Nuclear Physics | Not available yet | ||||

Ch 41: Quantum Mechanics | Not available yet |

Sections | |||
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Atomic Structure | 0 mins | 0 completed | Learn |

0 of 0 completed

In the quantum mechanical description of a hydrogen atom, the electron is in a state that has orbital angular momentum √12ℏ. What is the maximum possible ionization energy of this state of the atom?
A) 0.378 eV
B) 0.544 eV
C) 0.850 eV
D) 1.51 eV
E) 3.40 eV
F) none of the above answers

The nucleus 2612Mg has a radius of approximately 3.55 fm. Which of the following nuclei has a radius approximately twice as large?
A) 5224Cr
B) 15296Cm
C) 136C
D) 32He
E) 20882Pb
F) none of the above answers

In hydrogen emission, a famous emission line called the H-alpha line occurs at a wavelength of 656.28 nm. Which hydrogen series is the H-alpha line a part of?
A) The Lyman series (nf = 1)
B) The Balmer series (nf = 2)
C) The Paschen series (nf = 3)
D) The Brackett series (nf = 4)

What is the longest wavelength light capable of ionizing a hydrogen atom in the n = 6 state?

Determine the frequency of the fourth Lyman line (n = 5 to n = 1transition) using the figure below. What photon energy does that correspond to?

The electron in the n = 5 orbital stays in then n = 5 orbital for 5 * 10 -10 s on average. Estimate the uncertainty of the proton energy from Heisenberg's uncertainty principle.

In the Bohr model description of a hydrogen atom, the atom is an state where the electron has angular momentum L = 4. What is the ionization energy of this state of the atom?A) 13.6 eVB) 3.40 eVC) 1.51 eVD) 0.850 eVE) 0.544 eVF) none of the above answers

An atom is in a state that has energy -8.60 eV. What is the energy of the atom after it absorbs a photon that has wavelength 400 nm?A) -3.10 eVB) -11.7 eVC) -5.50 eVD) -8.60 eVE) none of the above answers

An atom undergoes a transition from a state with energy - 3.0 eV to a state with energy - 9.0 eV. What is the wavelength of the photon emitted in this transition?

The electron orbiting a hydrogen atom has an excited energy of -0.85 eV. What's the largest energy photon that can be emitted by this electron?

Doubly ionized Lithium, Li2+, has an electron in the ground state. What frequency photon does it need to jump from the ground state to the n = 3 excited state?

What is the potential energy and kinetic energy of an electron in hydrogen in the n = 3 excited state?

An electron in hydrogen is in the n = 5 ground state when it decays to the ground state. Estimate the recoil speed of the atom after the electron drops to the ground state. Note that the mass of a proton is about 1.67x10-27 kg, and the mass of an electron is about 9.11x10-31 kg.

For hydrogen, the Lyman emission series is the collection of all photons emitted when an excited electron drops to the ground state. What are the 3 largest wavelengths in the Lyman series?

A photon of 2.28 eV is absorbed by an electron in hydrogen. What is the minimum energy level (n) that the electron can be in to be ionized by this photon?

Consider the following diagram.
Say which arrows in the above diagram correspond to the following processes respectively: Absorption of a photon from the ground state to the first excited state; Emission of a photon from an excited state to another excited state.
1. Transition IV; Transition II
2. Transition I; Transition II
3. Transition IV; Transition III
4. Transition III; Transition IV
5. Transition II; Transition III
6. Transition I; Transition IV
7. Transition II; Transition IV
8. Transition III; Transition I
9. Transition III; Transition II
10. Transition I; Transition III

The energy levels of a particular quantum object are −8.2 eV, −4.4 eV, and −1.8 eV. If a collection of these objects is bombarded by an electron beam so that there are some objects in each excited state, what are the energies of the photons that will be emitted?
1. 12.6 eV, 2.6 eV, 10 eV
2. 3.8 eV, 12.6 eV, 2.6 eV
3. −8.2 eV, −4.4 eV, −1.8 eV
4. 3.8 eV, 6.4 eV, 2.6 eV
5. 8.2 eV, −4.4 eV, −1.8 eV
6. −3.8 eV, −6.4 eV, −2.6 eV
7. 6.4 eV, −4.4 eV, 1.8 eV
8. 3.8 eV, 6.2 eV, 12.6 eV
9. 10 eV, −3.8 eV, 6.4 eV
10. 12.6 eV, 10 eV, 6.2 eV

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