What is the weak nuclear force responsible for? Weak interaction, also called weak force or weak nuclear force, a fundamental force of nature that underlies some forms of radioactivity, governs the decay of unstable subatomic particles such as mesons, and initiates the nuclear fusion reaction that fuels the Sun. Why is it called weak force? […]
Can you chew gum in an exam?
Can you chew gum in an exam? Chewing gum and any other food is not allowed. ANY MISCONDUCT IN AN EXAMINATION ROOM WILL BE REPORTED TO THE APPROPRIATE EXAMINATION BOARD. THIS MAY RESULT IN A DISQUALIFICATION FROM THAT EXAMINATION AND ALSO ANY OTHER EXAMINATIONS YOU MAY TAKE! Why do schools not allow gum? The biggest […]
Do all metals react with HCl?
Do all metals react with HCl? Hydrochloric acid (HCl) reacts readily with most metals other than those in the platinum group in the periodic table. Generally, the metals at the far left of the periodic table react most strongly, and as you progress towards the right side, reactivity lessens. What happens when silver is treated […]
What is the ultimate source of all renewable energy?
What is the ultimate source of all renewable energy? The Sun is an infinite (at least in terms of human time scales) and renewable source of energy which is also by far the most important source of energy for us. Primary productivity (photosynthesis) is driven by sunlight and all our fossil fuels are derived from […]
Are public attitudes towards mental illness changing in the past ten years?
Are public attitudes towards mental illness changing in the past ten years? Furthermore, majority of the public agree that virtually anyone can develop a mental illness, which this year was up at 92%. Sue Baker, Director of Time to Change, said: “This robust research shows that public attitudes improved significantly last year, and at a […]
What does a purple dog harness mean?
What does a purple dog harness mean? Medical detection dogs such as Polo wear red and can detect when diabetics’ blood sugar levels are low. Assistance dogs trained by Canine Partners wear purple and assist with a range of daily tasks that may be difficult, painful or impossible to perform. Guide dogs wear fluorescent strips […]
Why are units required class 11?
Why are units required class 11? It is an elementary physical quantity, which does not require any other physical quantity to express it. It means it cannot be resolved further in terms of any other physical quantity. The units of fundamental physical quantities are called fundamental units. For example, in M. K. S. How many […]
What advantages do radio telescopes have over optical telescopes?
What advantages do radio telescopes have over optical telescopes? Radio telescopes detect radio waves coming from space. Although they are usually very large and expensive, these telescopes have an advantage over optical telescopes. They can be used in bad weather because the radio waves are not blocked by clouds as they pass through the atmosphere. […]
How does chemosynthesis differ from photosynthesis?
How does chemosynthesis differ from photosynthesis? Photosynthesis and chemosynthesis are both processes by which organisms produce food; photosynthesis is powered by sunlight while chemosynthesis runs on chemical energy. Which came first chemosynthesis or photosynthesis? Chemosynthesis may have also been the first type of metabolism that evolved on Earth, leading the way for cellular respiration and […]
What happens if permission to appeal is refused?
What happens if permission to appeal is refused? If permission to appeal is refused at that stage, that is the end of the matter. One cannot take it further to the Supreme Court because you will have been refused twice – in the High Court and Court of Appeal. If permission is granted, the appeal […]