Multiple ChoiceEven 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.898views2rank3comments
Multiple ChoiceThe 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?1159views1rank6comments
Multiple ChoiceWhen 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?1340views5rank4comments
Textbook QuestionThe speed of sound in dry air at 20 °C is 343 m/s and the lowest frequency sound wave that the human ear can detect is approximately 20 Hz. (a) What is the wavelength of such a sound wave?764views
Textbook QuestionA popular kitchen appliance produces electromagnetic radiation with a frequency of 2450 MHz. With reference to Figure 6.4, answer the following: (a) Estimate the wavelength of this radiation.525views
Textbook Question(a) What is the frequency of radiation that has a wavelength of 10 mm, about the size of a bacterium?728views
Textbook QuestionA laser pointer used in a lecture hall emits light at 650 nm. What is the frequency of this radiation?748views
Textbook Question(a) A green laser pointer emits light with a wavelength of 532 nm. What is the frequency of this light?1316views
Textbook QuestionThe distance from the sun to Earth is 1.496 * 108 km. How long does it take light to travel from the sun to Earth?2072views
Textbook QuestionCalculate the frequency of each wavelength of electromagnetic radiation: a. 632.8 nm (wavelength of red light from helium–neon laser) b. 503 nm (wavelength of maximum solar radiation) c. 0.052 nm (wavelength contained in medical X-rays)1772views
Textbook QuestionA certain cellular telephone transmits at a frequency of 825 MHz and receives at a frequency of 875 MHz. (a) What is the wavelength of the transmitted signal in cm?559views
Textbook Question(b) Fiber optic cable is available in 12 km lengths. How long will it take for a signal to travel that distance assuming that the speed of light in the cable is the same as in a vacuum?739views
Textbook QuestionConsider the two waves shown here, which we will consider to represent two electromagnetic radiations: (b) What is the frequency of wave A? 516views
Textbook QuestionCertain elements emit light of a specific wavelength when they are burned or heated in a non-luminous flame. Historically, chemists used such emission wavelengths to determine whether specific elements were present in a sample. Some characteristic wavelengths for a few of the elements are given in the following table: Ag 328.1 nm Fe 372.0 nm Au 267.6 nm K 404.7 nm Ba 455.4 nm Mg 285.2 nm Ca 422.7 nm Na 589.6 nm Cu 324.8 nm Ni 341.5 nm (c) When burned, a sample of an unknown substance is found to emit light of frequency 6.58 * 1014 s-1. Which of these elements is probably in the sample?1010views
Textbook QuestionThe speed of sound in air is 344 m>s at room temperature. The lowest frequency of a large organ pipe is 30 s - 1 and the highest frequency of a piccolo is 1.5 * 104 s - 1. Find the difference in wavelength between these two sounds.2184views1comments
Textbook QuestionIn an experiment to study the photoelectric effect, a scientist measures the kinetic energy of ejected electrons as a function of the frequency of radiation hitting a metal surface. She obtains the following plot. The point labeled 'n0' corresponds to light with a wavelength of 542 nm. (a) What is the value of n0 in s - 1? 542views
Textbook QuestionThe distance from Earth to the sun is 1.5 * 108 km. Find the number of crests in a light wave of frequency 1.0 * 1014 s - 1 traveling from the sun to Earth.1806views1rank
Textbook QuestionMoseley established the concept of atomic number by studying X rays emitted by the elements. The X rays emitted by some of the elements have the following wavelengths: Element Wavelength (pm) Ne 1461 Ca 335.8 Zn 143.5 Zr 78.6 Sn 49.1 (d) Use the result from part (b) to predict the X-ray wavelength emitted by iron.498views
Textbook QuestionMoseley established the concept of atomic number by studying X rays emitted by the elements. The X rays emitted by some of the elements have the following wavelengths: Element Wavelength (pm) Ne 1461 Ca 335.8 Zn 143.5 Zr 78.6 Sn 49.1 (e) A particular element emits X rays with a wavelength of 98.0 pm. What element do you think it is?400views
Textbook QuestionMoseley established the concept of atomic number by studying X rays emitted by the elements. The X rays emitted by some of the elements have the following wavelengths: Element Wavelength (pm) Ne 1461 Ca 335.8 Zn 143.5 Zr 78.6 Sn 49.1 (a) Calculate the frequency, n, of the X rays emitted by each of the elements, in Hz.729views
Open QuestionAn FM radio station found at 103.1 on the FM dial broadcasts at a frequency of 1.031 × 108 s−1 (103.1 MHz). What is the wavelength of these radio waves in meters?132views
Open QuestionCalculate the wavelength (in nm) of the blue light emitted by a mercury lamp with a frequency of 6.88 × 1014 Hz.141views
Open QuestionThe wavelength of some red light is 700.5 nm. what is the frequency of this red light?133views
Open QuestionCalculate the wavelength (in nm) of the red light emitted by a neon sign with a frequency of 4.74 × 1014 Hz.143views
Open QuestionThe wavelength of some violet light is 420.0 nm. What is the frequency of this violet light?116views
Open QuestionThe wavelength of some blue light is 470.0 nm. What is the frequency of this blue light?116views
Open QuestionCalculate the frequency of the green light emitted by a hydrogen atom with a wavelength of 486.1 nm.136views
Open QuestionCalculate the wavelength of each of the following frequencies of electromagnetic radiation.212views
Open QuestionCalculate the frequency of each of the following wavelengths of electromagnetic radiation.386views
Open QuestionCalculate the frequency of each of the following wave lengths of electromagnetic radiation.216views