Answer:
<em>the presence of others who might judge us </em>
Explanation:
<em>In psychology,</em><em> the concept of social facilitation was first introduced by one of the famous psychologist named </em><em>Norman Triplett</em><em> during 1898 and later on during 1920, </em><em>Floyd Allport </em><em>termed it as social facilitation. </em>
<em>The phenomenon of social facilitation</em><em> states that a person tends to perform better on specific tasks when he or she is surrounded by another person rather than alone.</em>
<em>In reference to the question above, the concept of social facilitation signifies "the presence of others who might judge us" can increase arousal.</em>
Items can be dissolved faster when adding heat in the process, when the size of particle is small but the surface area is very large in the process, when stirring is used to mix the solution or to increase the rate of reaction.
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Explanation:
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All the above methods are correct and useful to increase the dissolving rate of items in a process or reaction. By increasing heat the rate of reaction increases gradually because the heat provides energy to the molecules and force them to leave the shell and react rapidly.
When having a large surface area the dissolving time gradually decreases because the size of the particle is comparatively smaller. Stirring helps in mixing the solution due to which the molecules reacts fast and the item’s reaction and dissolving time gradually decreases.
answer :
high, upper-middle, lower-middle, and low income countries. Least developed countries, landlocked developing countries and small island developing states are all sub-groupings of developing countries. please mark me as brainlist i hope it helps you
Answer: The correct answer is : The critical density for the universe is approximately 10 ^ -26 kg / m ^ 3 or you can also say 10 hydrogen atoms per cubic meter.
Explanation: This value is given by:
critical density = 3H ^ 2/2 Pi G, where H is the Hubble constant and G is Newton's gravitational constant.
Critical density is the average density of matter necessary for the universe to stop its expansion but after an infinite time.
