Elements emit colours when heated because electrons in atoms can have only certain allowed energies.Heating an atom excites its electrons and they jump to higher energy levels. When the electrons return to lower energy levels, they emit energy in the form of light. Every element has a different number of electrons and a different set of energy levels. Thus, each element emits its own set of colours. See, for example, mercury and neon above. Those colours are as distinctive to each element as fingerprints are to people.
Closing Thoughts. Intelligence, then, is not quite the same as IQ. IQ is not a measure of anything but our general intellectual abilities. Intelligence includes our ability to learn from and interact with everything in our immediate environment, including other people. scores not accurate marker of intelligence, study shows. ... "There is no such thing as a single measure of IQ or a measure of general intelligence." More than 100,000 participants joined the study and completed 12 online cognitive tests that examined memory, reasoning, attention and planning abilities.
Answer:
The time of oil tanker will be 80 sec.
Explanation:
Given that,
He walks at 3 km/hour.
If the container ship is 100 m long, and travelling at 12 km/hour.
The distance will be 200 m.
We need to calculate the relative velocity
Using formula of relative velocity
Put the value into the formula
The distance is 200 m.
We need to calculate the time
Using formula of time
Put the value into the formula
Hence, The time of oil tanker will be 80 sec.
