Category: Physics

What happened to the water when put inside the freezer? When you put liquid water into the freezer, the water loses energy to the cold air in the freezer. At first, the water molecules move more slowly. This means that the temperature of the water drops. Why is freezing a good method of preservation? Freezing […]

Which factor does not affect the rate of transpiration in plant presence of cuticle? Some internal factors also affect rate of transpiration e.g., leaf area, leaf structure and age of plants. Chlorophyll content of leaves does not directly affect rate of transpiration. Which is not correct about transpiration? Excessive transpiration will lead to water stress, […]

What causes problems regulating body temperature? Hyperthyroidism occurs when your thyroid produces too much of the hormone thyroxine. Thyroxine affects the regulation of your body’s metabolism. An excess of this hormone can cause your body’s metabolism to increase, which leads to a rising body temperature. Graves’ disease is the most common cause of hyperthyroidism. Why […]

What advantages does a radio telescope have? 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. What were […]

How long does it take for oil to degrade? I took some time to do a search on the subject and discovered that oil compabies recommend a maximum of 5 years as a shelf life for unopened motor oils, including synthetics. Does oil go bad if you don’t drive? Oil degrades over time. Even if […]

How do you manually perform a cylinder power balance test? To conduct a cylinder power balance test with an engine analyzer, first connect the analyzer according to the manufacturer’s procedure. Disconnect and plug the vacuum line to the EGR valve, if fitted with the engine. Now start the engine and let it run until it […]

What is the relationship between temperature and average kinetic energy of a gas? The average kinetic energy of gas particles is proportional to the absolute temperature of the gas, and all gases at the same temperature have the same average kinetic energy. Which phase has the highest kinetic energy Why? Energy and State of Matter […]

What year would it be if there was no leap year 2020? 2021 What will happen if we don’t add an extra day in February every 4 years leap year )? This is called a tropical year, and it starts on the March equinox. However, the Gregorian calendar has only 365 days in a year. […]

What was the FEV1 at the initial radius of 5 mm? What was the FEV1 (%) at the initial radius of 5.00 mm? The FEV1 at the initial radius was 73.9%. Why is it impossible to further exhale the RV? Why is it impossible to further exhale the RV (that is, where is this air […]

Why is the membrane potential negative? The resting membrane potential is a result of different concentrations inside and outside the cell. The negative charge within the cell is created by the cell membrane being more permeable to potassium ion movement than sodium ion movement. What causes membrane potential? Sodium (Na+) and chloride (Cl−) ions are […]