Category: Physics

How can a catalyst speed up a chemical reaction? A catalyst is a substance that can be added to a reaction to increase the reaction rate without getting consumed in the process. Catalysts typically speed up a reaction by reducing the activation energy or changing the reaction mechanism. Enzymes are proteins that act as catalysts […]

What are the major effects of particulate matter on environment? Environmental damage changing the nutrient balance in coastal waters and large river basins. depleting the nutrients in soil. damaging sensitive forests and farm crops. affecting the diversity of ecosystems. What are the effects of particulate matter on human health? Health studies have shown a significant […]

What causes the release of energy when propane burns in oxygen? Energy is released when the C-H bonds in propane break to form C-O bonds and H-H bonds. When 10 ml of propane gas is combusted completely volume of co2 gas obtained in similar condition is? ∴ 0.01 liter of Propane Produces 3 × 0.01 […]

What are some examples of chemical reactions in everyday life? Examples of chemical reactions in everyday life include photosynthesis, rust, baking, digestion, combustion, chemical batteries, fermentation, and washing with soap and water. Chemical reactions occur everywhere in the world around you, not just in a chemistry lab. What are the 7 types of chemical reactions? […]

Is it possible for a heat engine to operate without rejecting any waste heat to a low? Is it possible to save the rejected heat Qout in a power cycle? The answer is NO, because without the cooling in condenser the cycle cannot be completed. Every heat engine must waste some energy by transferring it […]

What are the four traditional approaches to film history? The four traditional approaches are the aesthetic, technological, economic, and social. What are the three types of film sound? Films are produced using three types of sounds: human voices, music and sound effects. These three types of sounds are crucial for a film to feel realistic […]

What time should I see Comet tonight? How can I see it? The best time to see Comet Neowise will be shortly after sunset, around 9 p.m. For those familiar with stargazing, locate the Big Dipper and the comet should be sitting just below it in the northwest sky, according to NASA. Is there a […]

What is heavier milk or gas? Milk is a little more, around 1.03 kg, while a liter of gasoline is . 71 to . (This can be a surprise, as people think of whole milk as being “heavier.” Milk is more dense than water because it has dissolved protein and sugar–the fat makes it LESS […]

How do EM waves travel? These changing fields form electromagnetic waves. Electromagnetic waves differ from mechanical waves in that they do not require a medium to propagate. This means that electromagnetic waves can travel not only through air and solid materials, but also through the vacuum of space. How fast do EM waves travel? Electromagnetic […]

Is known as the father of forensic science? Dr. Edmond Locard (13 December 1877 – 4 May 1966) was a French criminologist, the pioneer in forensic science who became known as the “Sherlock Holmes of France”…. Edmond Locard Citizenship French Known for First police laboratory, Locard’s exchange principle, Sherlock Holmes of France Scientific career Who […]