A person on horse's back tends to fall back if the horse starts running all of sudden. Why?
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Q: Determine the product of the reaction Li + He →? + n. What is the Q value of the reaction?
A: (a)Let the product be NYA. Consider the given reaction.
Q: Explain the difference between steady state and variable state of a thermal conductor.
A: The definition of a steady state is an unchanging condition, system or process that remains the same...
Q: Distinguish between concurrent forces and coplanar forces.
A: When all forces are acting in the same plane, they are called coplanar whereas when forces act at th...
Q: What is the condition under which Hooke's law holds good?
A: According to Hooke’s law, Stress is directly proportional to strain within elastic limit and Hooke’s...
Q: Mention two factors on which the degrees of freedom of a gas depends.
A: The degree of freedom depends on the number atom in the gas molecule.
Q: Liquid oxygen freezes at -218.4 degree C and boils at -183 degree C . Express these temperatures in ...
A: T1 = -218.4o CT2 = -183 o C
Q: A reaction that has been considered as a source of energy is the absorption of a proton by a boron -...
A: Formula to the total energy released is,
Q: What is the effect of decrease of pressure on the fusion and boiling point of CO2.
A: The phase diagram of carbon dioxide is,
Q: It is hotter at the same distance over the top of a fire than in front of it, Why?
A: Whenever we put fire at a place, the air surrounding the fire gets heated up. As we know that hot ai...