What method is used to separate pebbles and water? 1) Pour the mixture in a container having water and stir well. The salt will dissolve in it. 2) Now pass the mixture (aqueous) into another container using a sieve. The sand and the solution will pass through sieve and the pebbles will get separated out. […]
Why do elements have different line spectra?
Why do elements have different line spectra? The energy levels that are allowed for each atom depend upon the number and arrangement of protons and electrons in the atom. As each element has different energy states available to it, each element releases photons of different color when its atoms return to their lower energy states. […]
How long can you go without exercise?
How do you know if you have restricted blood flow?
How do you know if you have restricted blood flow? One of the most common symptoms of poor circulation is numbness and tingling in the hands and feet. When something is restricting the flow of blood, and blood cannot reach the extremities in sufficient quantities, a person may also have a sensation of pins and […]
What pressure allows you to breathe?
What pressure allows you to breathe? Although it fluctuates during inspiration and expiration, intrapleural pressure remains approximately –4 mm Hg throughout the breathing cycle. Competing forces within the thorax cause the formation of the negative intrapleural pressure. What goes into your body when you inhale what gets out of your body when you exhale? When […]
How long will it take until only 25 percent of the strontium 90 remains?
How long will it take until only 25 percent of the strontium 90 remains? It takes 28.8 years for half of the strontium to decay to 50 grams. This is called one half-life. After 28.8 more years, strontium-90 has decayed to 25 grams. How does half-life work? A medication’s biological half-life refers simply to how […]
What happens when Chlorophyll absorbs light energy?
What happens when Chlorophyll absorbs light energy? what happens when chlorophyll molecule absorbs light: what happens when chlorophyll molecule absorbs light: photosynthesis begins. it becomes excited. This energy passes through other chlorophyll molecules, and into the reaction center of Photosystem II (Electron transport chain). What is the most important function of chlorophyll? Chlorophyll’s job in […]
What is the internal resistance of a 12v battery?
What is the internal resistance of a 12v battery? 500 ohms What would be the symptoms of a battery with high internal resistance? High resistance, current is restricted, voltage drops on load; battery heats up. Figure 1: Effects of internal battery resistance. A battery with low internal resistance delivers high current on demand. High resistance […]