Answer:
divide the velocity of the wave by the wavelength. Write your answer in Hertz, or Hz, which is the unit for frequency. If you need to calculate the frequency from the time it takes to complete a wave cycle, or T, the frequency will be the inverse of the time, or 1 divided by T.
Explanation:
Answer:
The speed is the same as long as the reflection is regular.
Explanation:
This is because in regular reflection, the angle of incidence is equal to the angle of reflection in accordance with the second law of reflection.
Since speed of light depends on the angle of the light ray it makes with the reflecting surface, the speed is the same
Answer:
Zero Kelvin
Explanation:
The average kinetic energy of the particles in a gas is related to the absolute temperature of the gas by (for an ideal monoatomic gas):
where
k is the Boltzmann constant
T is the absolute temperature
The average kinetic energy is the energy possessed by the particles due to their motion; we see that this energy becomes zero when T = 0, which means when the substance reaches a temperature of zero Kelvin. Therefore, this means that at this temperature all the particles stop moving.
Answer:
splitting a gas molecule
Explanation:
Endothermic reactions can be regarded as chemical reactions whereby there is absorbing of heat energy by the reactant from the surroundings when forming the products. Cooling effect is created because the reaction will lower the surrounding temperature after it must have absorbed heat. In endothermic reaction, the standard enthalpy change ΔH⚬ is positive. For instance when gas molecules is splitter heat energy is absorbed.
