When using Planck's constant, how do I know when to use electron volts or joules? Planck's...
When using Planck's constant, how do I know when to use electron volts or joules?
Planck's constant may be written as 6.63 x 10^-34 Js or 4.14 x 10^-15 eVs right? But how do I choose which one I should use to figure out an answer to a question?
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When using Planck's constant, how do I know when to use electron
volts or joules?
Planck's...
The electron in hydrogen atom absorbs a photon with an energy of 13.6 eV. The electron...
The electron in hydrogen atom absorbs a photon with an energy of 13.6 eV. The electron decays to its energy level of 3.4 eV. What is the energy of the photon it emits? (Planck's constant is 4.14 x 10^-15 eVs. What is the frequency of that proton? What is the corresponding wave length of that proton? Thanks for the help ...I know it is a loaded question but I am lost!
I know the answer is 14.5 Volts, but how do you get to that answer? also,...
I know the answer is
14.5 Volts, but how do you get to that answer?
also, when you answer my question, can you please use clear
handwriting? Thanks so much!
What is the source voltage? R, 10 92 FIGURE 2 - E R2 후 .25A RE 50 Ω 40 Ω 1 W 10 Volts 14.5 Volts 45 Volts
Please help! I don't even know where to start. I know to do the sum of...
Please help! I don't even know where to start. I know
to do the sum of the forces in both directions but I'm not sure how
that translates with the angle!
Problem 4 (7 points). The figure below shows the positions of two α particles(each alpha particle (a) has a charge +2e) and an electron. a) Draw a clear and neat free-body diagram for either sphere at equilibrium. (2 points) b) Determine the magnitude and direction of the resultant force...
How do I know when to use r2 vs r (unsquared when using the equations below)?...
How do I know when to use r2 vs r (unsquared when using the equations below)? Are there any keywords to keep in mind? (ie: force: use r2 potential/voltage: use r?) F = k |q1q2| /r2 vs V = kQ / r
Using the Rydberg equation, calculate the energy in joules, J, of the emission line when electrons...
Using the Rydberg equation, calculate the energy in joules, J, of the emission line when electrons drop from n2 = 4 to n1= 2 in the hydrogen atom. Hint: Answer includes 3 significant figures, use the format X.XXEX for scientific notation. Relevant constants: h = 6.626 x 10-34 J·s, c = 3.00 x 108 m·s-1, and RH = 1.097 x 107 m-1. Alright I tried to plug in I am getting 1.36x10^-18 what am I doing wrong? is this right...
(a) What energy (in eV) would a photon have, if it were emitted when an electron...
(a) What energy (in eV) would a photon have, if it were emitted when an electron dropped from the n = 5 level to n = 2? 2.865 eV (b) The equation for a photon's energy can be written: Echo where h is known as Planck's constant and is equal to 4.136 x 10-15 eV · s. (Note that h has a different numerical value in SI units.) Since we know that for light © = f, we can rewrite...
Relating to titration problems: How do you know when it is appropriate to use either the...
Relating to titration problems: How do you know when it is appropriate to use either the neutralization reaction, the hydrolysis reaction, or the stoichiometry reaction? I am trying to figure out when I can use the ICE table, or when I am supposed to use stoichiometry to solve at different points in a reaction. Please explain the concept behind your answer as well. If it helps to apply your explanation to a problem: TItration of 10mL of 0.3 M NH3...
The correct answer is D but I do not know why. I understand why A and...
The correct answer is D but I do not know why. I understand why
A and B are incorrect but why is C wrong?
Care s ice unless 12. [4 pts] Consider the figure at right. The magnets and wire in the diagram are similar to those wire used in lab. Which of the following statements is true? When an electron is placed at rest in between the two magnets, it experiences a force in the same direction s the...
I know its right, but I guessed so how do I do it? NASA sent a...
I know its right, but I guessed so how do I do it?
NASA sent a satellite to a circular orbit around Mars. The period of the orbit is 107 minutes. Mass of Mars -6.42 x 10 kg Radius of Mars 3.39 x 10 m What is the acceleration due to Mar's gravity at this orbital location? 3.40 2
How can we use the y-intercept and the slope from the graph to determine Planck's Constant...
How can we use the y-intercept and the slope from the graph to
determine Planck's Constant and the work function in the equation
KEmax=hf−ϕ ?
(Note: I know the linearization is showing the y-int. and slope to
be zero because the values are so small, but conceptually how could
we do it?)
Max. Kinetic Energy vs Frequen... 2.5x10-19 2x10-19 Max. Kinetic Energy (J) 1.5x10-19 1x10-19 500T 550T 600T 650T 700T 750T Frequency (Hz) Max. Kinetic Energy Curve: y= AX +...
I know the answer is
14.5 Volts, but how do you get to that answer?
also, when you answer my question, can you please use clear
handwriting? Thanks so much!
What is the source voltage? R, 10 92 FIGURE 2 - E R2 후 .25A RE 50 Ω 40 Ω 1 W 10 Volts 14.5 Volts 45 Volts
Please help! I don't even know where to start. I know
to do the sum of the forces in both directions but I'm not sure how
that translates with the angle!
Problem 4 (7 points). The figure below shows the positions of two α particles(each alpha particle (a) has a charge +2e) and an electron. a) Draw a clear and neat free-body diagram for either sphere at equilibrium. (2 points) b) Determine the magnitude and direction of the resultant force...
(a) What energy (in eV) would a photon have, if it were emitted when an electron dropped from the n = 5 level to n = 2? 2.865 eV (b) The equation for a photon's energy can be written: Echo where h is known as Planck's constant and is equal to 4.136 x 10-15 eV · s. (Note that h has a different numerical value in SI units.) Since we know that for light © = f, we can rewrite...
The correct answer is D but I do not know why. I understand why
A and B are incorrect but why is C wrong?
Care s ice unless 12. [4 pts] Consider the figure at right. The magnets and wire in the diagram are similar to those wire used in lab. Which of the following statements is true? When an electron is placed at rest in between the two magnets, it experiences a force in the same direction s the...
I know its right, but I guessed so how do I do it?
NASA sent a satellite to a circular orbit around Mars. The period of the orbit is 107 minutes. Mass of Mars -6.42 x 10 kg Radius of Mars 3.39 x 10 m What is the acceleration due to Mar's gravity at this orbital location? 3.40 2
How can we use the y-intercept and the slope from the graph to
determine Planck's Constant and the work function in the equation
KEmax=hf−ϕ ?
(Note: I know the linearization is showing the y-int. and slope to
be zero because the values are so small, but conceptually how could
we do it?)
Max. Kinetic Energy vs Frequen... 2.5x10-19 2x10-19 Max. Kinetic Energy (J) 1.5x10-19 1x10-19 500T 550T 600T 650T 700T 750T Frequency (Hz) Max. Kinetic Energy Curve: y= AX +...
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