Wavelength and Frequency

Which energy wave would have the highest frequency from the wavelengths provided?

Even the music we listen to deals with how energy travels to get to our car radio. If an FM Radio station broadcasts its music at 97.7 MHz find the wavelength in angstroms of the radio waves. One angstrom is equal to 10^-10 m.

The distance between the earth and the sun is 1.496 x 10¹⁷ μm. How long (in mins) will it take for light to go from the sun to earth?

When they are burned, certain elements emit light at a specific wavelength. Some wavelengths for certain elements are provided below:

When burned, an unknown element emits light at a frequency of 9.23 x 10¹⁴ s^-1. What is the identity of this unknown element?

Calculate the energy (in nJ) of a photon emitted by a mercury lamp with a frequency of 6.88 x 10¹⁴ Hz.

A light ray has a wavelength that is 835 µm contains 6.32 x 10^-3 J of energy. How many photons does this light ray have?

How much energy (in kJ) do 4.50 moles of photons contain at a wavelength of 705 nm?

Which of the following sources of electromagnetic radiation will have the highest frequency?

A carbon–oxygen double bond within a sugar molecule absorbs electromagnetic radiation at a frequency of 6.0 x 10¹² s^-1. What portion of the electromagnetic spectrum does this represent?

X-Ray detectors are devices that use scintillators to convert X-rays into light in order to detect X-Rays indirectly. Which of the following would be picked up by an X-Ray detector:radiation with a wavelength of 0.85 nm or a frequency of 6.52 x 10¹¹ s^-1?

A metal with a threshold frequency of 2.15 x 10¹⁵ s^-1 emits an electron with a velocity of 7.03 x 10⁶ m/s when radiation of 1.88 x 10¹⁵ s^-1 strikes the metal’s surface. Calculate the mass of the electron.

An ultraviolet photon with a wavelength of 320 nm strikes a metal surface. The emitted electron has a kinetic energy of 1030 eV. What is the binding energy of the electron in kJ/mol? 1 electron volt (eV) = 1.602 x 10^-19 J.

What is the velocity (in m/s) of an electron that has a wavelength of 3.13 x 10⁵ pm? (Mass of an electron = 9.11 x 10^-31 kg).

The faster an electron is moving, the _________ its kinetic energy, and the __________ its wavelength.

Consider an atom traveling at 1% the speed of light. The de Broglie wavelength is found to be 7.1316 x 10^-39 m. Which element is this?

To what uncertainty (in m) can the position of a baseball traveling at 51.0 m/s be measured if the uncertainty of its speed is 0.12%? The mass of the baseball is 150 g.

A proton with a mass of 1.67 x 10^-27 kg traveling at 4.7 x 10⁵ m/s has an uncertainty in its velocity of 1.77 x 10⁵ m/s. Determine its uncertainty in position.

An electron with a mass of 9.11 x 10-31 kg has an uncertainty in its position of 630 pm. What is the uncertainty in its velocity?

Which of the electron transitions represents absorption with the greatest frequency?

Which of the following transitions (in a hydrogen atom) represent emission of the shortest wavelength?

If the energy of an electron within the boron atom was calculated as –6.0556 x 10^-18 J, at what energy level would it reside?

What is the wavelength of a photon (in nm) absorbed during a transition from the n = 2 to n = 5 state in the hydrogen atom?

Determine the end (final) value of n in a hydrogen atom transition, if the electron starts in n = 5 and the atom releases a photon of light with an energy of 4.5738 × 10^-19 J.