What two things help plant cells? Plant cells have a cell wall, a large central vacuole, and plastids such as chloroplasts. The cell wall is a rigid layer that is found outside the cell membrane and surrounds the cell, providing structural support and protection. How do plants absorb photons of light energy quizlet? Chlorophyll is […]
What is an example of a longitudinal research study?
What is an example of a longitudinal research study? What is an example of a longitudinal study? The 1970 British Cohort Study, which has collected data on the lives of 17,000 Brits since their births in 1970, is one well-known example of a longitudinal study. What is problem with longitudinal research? However, the longitudinal survey […]
What is the heat transfer coefficient of air?
What is the heat transfer coefficient of air? Typical convective heat transfer coefficients for some common fluid flow applications: Free Convection – air, gases and dry vapors : 0.5 – 1000 (W/(m2K)) Forced Convection – air, gases and dry vapors: 10 – 1000 (W/(m2K)) Forced Convection – water and liquids: 50 – 10000 (W/(m2K)) How […]
What if the oceans dried up?
What if the oceans dried up? But let’s get back to what would happen if the oceans were gone. Without clouds forming over the ocean, rain would be incredibly rare, and the planet would become desert. We’d watch our lakes and water supplies dwindle a little more every year until nothing was left. Humans might […]
Why is dark matter so hard to find?
Why is dark matter so hard to find? Unlike normal matter, dark matter does not interact with the electromagnetic force. This means it does not absorb, reflect or emit light, making it extremely hard to spot. In fact, researchers have been able to infer the existence of dark matter only from the gravitational effect it […]
Are V8 faster than V6?
Are V8 faster than V6? Simply put, V8 engines have eight cylinders mounted in two sets of four, compared to six cylinders in a V6. V8s smoothly produce more power and provide acceleration at a faster rate. However, due to the V8s additional cylinders, these engines consume more fuel than the V6. What is the […]
What is the rarest hummingbird in the world?
What is the rarest hummingbird in the world? Esmeraldas Woodstar What is the heaviest bird on earth? ostrich What is the biggest flying bird alive today? Wandering albatross What is the biggest animal that has ever lived? blue whale What is the biggest animal on earth today? What is the most dangerous animal in the […]
Are humans negatively or positively charged?
Are humans negatively or positively charged? Resting cells are negatively charged on the inside, while the outside environment is more positively charged. This is due to a slight imbalance between positive and negative ions inside and outside the cell. Cells can achieve this charge separation by allowing charged ions to flow in and out through […]
Are dipole-dipole forces strong?
Are dipole-dipole forces strong? Dipole-dipole forces have strengths that range from 5 kJ to 20 kJ per mole. They are much weaker than ionic or covalent bonds and have a significant effect only when the molecules involved are close together (touching or almost touching). Polar molecules have a partial negative end and a partial positive […]
How can we avoid the harmful effects of visible light?
How can we avoid the harmful effects of visible light? You can protect your eyes from harmful sunlight and minimize the effects of glare by using a brimmed hat or visor in combination with absorptive lenses. Absorptive lenses are sunglasses that filter out ultraviolet and infrared light, reduce glare, and increase contrast. What are the […]