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Energy, Wavelength, and Constants in Physics

Energy, Wavelength, and Constants in Physics

Assessment

Interactive Video

Physics, Chemistry, Science

9th - 12th Grade

Practice Problem

Hard

Created by

Patricia Brown

FREE Resource

This video tutorial explains how to solve a problem involving the interconversion of wavelength, frequency, and photon energy. It covers the use of the equation E = HC/λ, where E is energy, H is Planck's constant, and C is the speed of light. The tutorial guides viewers through converting energy units from kilojoules per mole to joules per bond, performing algebraic manipulation to solve for wavelength, and converting the final result into nanometers.

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10 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the main goal of the problem discussed in the video?

To calculate the speed of light

To determine the frequency of a photon

To find the wavelength of a photon capable of breaking a bond

To measure the energy of a photon in kilojoules

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which equation is used to relate energy and wavelength in the problem?

E = H + C

E = hf

E = HC/λ

E = mc^2

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the value of Planck's constant used in the video?

1.602 x 10^-19 C

9.81 m/s^2

6.626 x 10^-34 J·s

3.00 x 10^8 m/s

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the speed of light value used in the calculations?

3.14 x 10^8 m/s

2.998 x 10^8 m/s

1.00 x 10^8 m/s

3.00 x 10^8 m/s

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How is energy initially provided in the problem?

In calories per mole

In watts per second

In kilojoules per mole

In joules per bond

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is Avogadro's number used for in the video?

To convert moles of bonds to individual bonds

To convert energy from joules to kilojoules

To determine Planck's constant

To calculate the speed of light

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the final energy value used in joules per bond?

6.02 x 10^-23 J

2.38 x 10^-22 J

1.00 x 10^-20 J

3.95 x 10^-19 J

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