Category: Physics

How does Bell Curve Work? Grading on a curve, more commonly known as bell curving, is a grading practice in which students’ grades are allocated over a normal distribution. The result is that a majority of students receive a grade close to a specific average. This resulted in one student getting a grade much lower […]

Which is the intensive property? An intensive property is a property of matter that does not change as the amount of matter changes. It is a bulk property, which means it is a physical property that is not dependent on the size or mass of a sample. In contrast, an extensive property is one that […]

Which liquid is dissolve in water? Sugar. Acetone, ethylene glycol, methanol, hydrofluoric acid, sulphuric acid, hydrogen peroxide, and many others. Those compounds mix easily in water, therefore they are miscible in water. Does dishwashing liquid dissolve in water? Liquids can dissolve in other liquids. When you add liquid dish detergent or hand soap to water, […]

What happens to the mass if you double the volume? If a mass and volume is doubled, what happens to the density? It will stay the same because the 2 and 2 would cancel out and we’d get the same density as the orignal value. Density is given as mass/volume -(1). IN your question the […]

Who are special needs students? Children with severe multiple disabilities who have difficulty in coping with regular schools are referred to such special schools. How does special needs affect child development? A child with a general learning disability finds it more difficult to learn, understand and do things compared to other children of the same […]

Which state produces the most eggs? Iowa How many eggs do humans eat in a year? 279 eggs How many eggs can a man eat? The science is clear that up to 3 whole eggs per day are perfectly safe for healthy people. Summary Eggs consistently raise HDL (the “good”) cholesterol. For 70% of people, […]

How successful is product placement? Product placement can be very successful, as shown by the 65% increase in Reese’s Pieces sales after its placement in E.T. The Extra-Terrestrial, or the 50% increase in Red Stripe sales after its placement in The Firm. What are the top 5 movies with excessive product placement? Top 10 Product […]

Why is water not used in barometer? Water is not a suitable barometric liquid because: (i) The density of water is low (103 kg m-3). Water barometer will support 10.4m of water at sea level. It is impractical to have such a long tube. Why water is not used in thermometers instead of mercury? Water […]

Are masks effective against the coronavirus disease? Masks are now recognized as one of the most effective available tools to mitigate the spread of COVID-19. This intervention decreases transmission of the coronavirus and is a readily scalable measure to ensure the public’s health. Can antibiotics treat the coronavirus disease? Antibiotics do not work on viruses, […]

What would happen if stomata were always open? If the stomata were constantly open, plants would lose too much water via evaporation from the leaf surface, a process called transpiration. This is the basis for the opening and closing of a stoma, known as stomatal movement, which controls gas exchange necessary for photosynthesis and limits […]