The first whistle is louder while the second whistle has a higher pitch
Loud vs high
Answer: Option (A) is the correct answer.
Explanation:
According to the Gibb's free energy conditions:
If 
< 0, then reaction is spontaneous.
If > 0, then reaction is non-spontaneous.
If = 0, then reaction is equilibrium.
Since, the given reaction is 
. It denotes that liquid state of fluorine is changing into gaseous state. And, the boiling point of fluorine is very low.
Therefore, at low and high temperature fluorine is a gas. Hence, the reaction is spontaneous in nature.
Thus, we can conclude that the statement at low temperature, the reaction is spontaneous and < 0 and at high temperature, the reaction is spontaneous and < 0, is correct.
Answer:
Work = 90.65 j
Explanation:
Given data:
Mass = 0.500 Kg
Distance = 18.5 m
Work done = ?
Solution:
Work = force . distance
Force = mg
Work = mg.distance
Work = mgh
Work = 0.500 Kg × 9.8 m/s²× 18.5 m
Work = 90.65 Kg .m²/s²
Kg .m²/s² = j
Work = 90.65 j
The correct answer among the choices listed above is the last option. All of the following release carbon into the atmosphere except the <span>sedimentation of dead organisms. Combustion or burning always include the release of carbon dioxide into the atmosphere as well as the cellular respiration of plants and animals.</span>
The basic tastes of sweet, salty and sour have different thresholds, or concentration levels, at which they can be detected. In other words, it is easier to detect some flavors at low concentrations compared with other flavors. Taste thresholds can vary from person to person.
