Chapter 25 Physic Two Umsl
The speed of light in a vacuum is smaller for higher energy electromagnetic waves. larger for short wavelength electromagnetic waves. a constant value everywhere in the universe. larger for high frequency electromagnetic waves.
A constant value everywhere in the universe
When unpolarized light is incident on a sheet of polarizing material with a transmission axis oriented vertically, what percentage of the light is transmitted through the material? 0% 100% 50% 10%
50%
If an object is moving toward us, its wavelength appears shorter, and we say it is yellowshifted blueshifted redshifted greenshifted
Blueshifted
Electromagnetic radiation carries electrons temperature protons energy
Energy
Place the following in order from most energy to least energy: gamma rays, infrared rays, visible light, ultraviolet light ultraviolet light, visible light, infrared rays, gamma rays gamma rays, ultraviolet light, visible light, infrared rays ultraviolet light, infrared rays, visible light, gamma rays
Gamma Rays , Ultraviolet light, Visible Light, Infrared rays
Which one of the following types of electromagnetic radiation is produced by the vibration and rotation of molecules within a material? gamma rays infrared radiation visible light x-rays
Infrared radiation
Sound waves are emitted from a pulsating point source and travel spherically outward from the source. What is the distance between two successive wave fronts? Each successive wave front has a longer distance than the previous one. one wavelength two wavelengths one-half wavelength
One wavelength
Which of the following regions of the electromagnetic spectrum has the longest wavelength? visible waves gamma rays infrared waves radio waves
Radio waves
Which one of the following is not an electromagnetic wave? sound waves gamma rays infrared UV
Sound waves
What type of wave is light? pressure both longitudinal and pressure transverse longitudinal
Transverse
A particle of interplanetary dust is close to the Sun and interacts with the Sun's gravitational field as well as with the light emitted by the Sun. If it only interacts appreciably with the Sun, can it be pushed away from the Sun instead of being pulled towards it? Yes, but the object must be very large so that it can gain enough radiation pressure. No, the gravitational force will always dominate if the object is close enough. No, the gravitational force will always dominate if the object is large enough Yes, if the object is small enough, radiation pressure will win over.
Yes, if the object is small enough, radiation pressure will win over.
Electromagnetic waves can be produced by All of the other answers are correct. electric charges moving with constant velocity. electric charges at rest. electric charges in accelerated motion.
electric charges in accelerated motion.
The energy density of an electromagnetic wave is entirely in the magnetic field. equally divided between the magnetic and the electric fields. 1/4 in the electric field and 3/4 in the magnetic field. entirely in the electric field.
equally divided between the magnetic and the electric fields.
The wavelength of electromagnetic radiation is inversely proportional to frequency and inversely proportional to energy inversely proportion to frequency and proportional to energy proportional to frequency and proportional to energy proportional to frequency and inversely proportional to energy
inversely proportional to frequency and inversely proportional to energy
In an electromagnetic wave the electric field and magnetic field are oriented such that they are perpendicular to one another and perpendicular to the direction of wave propagation. they are parallel to one another and parallel to the direction of wave propagation. they are parallel to one another and perpendicular to the direction of wave propagation. they are perpendicular to one another and parallel to the direction of wave propagation.
they are perpendicular to one another and perpendicular to the direction of wave propagation.