What is the apparent size of the moon? Use in astronomy Celestial body Angular diameter or size Andromeda Galaxy 3°10′ by 1° Sun 31′27″ – 32′32″ Moon 29′20″ – 34′6″ Helix Nebula about 16′ by 28′ Can the flag on the moon be seen? Can we use the Hubble Space Telescope to see anything left […]
What is the formula of electric force?
What is the formula of electric force? Calculate the electrostatic force using the formula: F = K[q1 x q2]/D^2 where K is coulombs constant, which is equal to 9 x 10^9 Nm^2/C^2. The unit for K is newtons square meters per square coulombs. What is an example of repulsive force? For example, the force between […]
Does black body actually exist?
Does black body actually exist? Although a blackbody does not really exist, we will consider the planets and stars (including the earth and the sun) as blackbodies. According to the above definition, a blackbody will emit radiation in all parts of the EM spectrum, but by intuition, we know that one will not radiate in […]
How do plants absorb photons of light energy?
How do plants absorb photons of light energy? When a plant is exposed to light, photons of appropriate wavelength will strike and be absorbed by the pigment-protein complexes arrayed on the thylakoid membranes. When this happens, the energy of the photon is transferred to the pigment molecule, thus causing the pigment to go into an […]
Do waves travel faster in deeper water?
Do waves travel faster in deeper water? Briefly, the deeper the water, the faster a surface wave will travel, and the lower the height will be. As waves come ashore on the ocean, they slow down and get taller, preserving the amount of energy in the wave. The wave speed and variation with depth also […]
Who invented Fermi level?
Who invented Fermi level? Enrico Fermi Citizenship Italian (1901–44) American (1944–54) Alma mater Scuola Normale Superiore of Pisa Known for Demonstrating first self-sustaining nuclear chain reaction Fermi–Dirac statistics Fermi’s golden rule Fermi paradox Fermi method Fermi theory of beta decay Spouse(s) Laura Capon Fermi How is Fermi level measured? calculate WF by simply subtract the […]
In which of the following hydrogen bond is present?
In which of the following hydrogen bond is present? Hydrogen bonding between two water (H2O) molecules. Note that the O atom in one molecule is attracted to a H atom in the second molecule. Hydrogen bonding between a water molecule and an ammonia (NH3) molecule…. element electronegativity value H 2.1 N 3.0 O 3.5 F […]
What is a reference point example?
Does critical angle depend on?
Does critical angle depend on? (a) The critical angle of a medium depends upon the refractive index, wavelength of light and the temperature of the medium. Does critical angle depend on frequency? Yes, it depends. Does critical angle depend on wavelength used? Critical angle depends on the refractive index of a material, which in turn […]