Category: Physics

What is the partial pressure of oxygen at sea level? 160 mm Hg How do you find the partial pressure of CO2? Calculate the partial pressures for each gas. For the partial pressure of carbon dioxide, we multiply 0.2 mol by our constant of 0.0821 and our temperature of 310 degrees K, then divide by […]

What instrument can make any sound? What instrument can make any sound and be heard but not touched or seen? Your voice. What are examples of idiophones? Idiophones make their sound by hitting, rubbing or shaking. Drums are not idiophones. Neither are stringed instruments. Examples of idiophones include the triangle, wood block, maracas, bell, and […]

Is it OK to put dry ice in the freezer? If you keep it in the freezer, it will not only melt into a gas quickly, since the freezer is so much warmer than the temperature of dry ice, but it could also cause the freezer to shut down. Follow this tip: The best place […]

Did cannonballs have explosives in them? A cannonball is a solid ball of metal. It did not contain any explosive material and its killing power came simply from a fact that it was a ball of metal travelling at a very high speed. How fast is a cannonball mph? 106 mph (171 km/h) average. Set […]

What would happen if the rabbit population suddenly doubled? In the stable food chain shown, what would you expect to happen initially if you were to suddenly double the population of rabbits? The populations of the other three species would also increase. The populations of the other three species would decrease. The grass population and […]

Who is the tallest man on earth in 2020? Sultan Kösen Who is the shortest man alive? Chandra Bahadur Dangi Who is the tallest kid in the world? Brenden Adams Born September 20, 1995 Ellensburg, Washington, U.S. Known for Formerly the tallest teenager in the world Height 7 ft 8 in (2.34 m) How tall […]

How can I generate electricity cheaply? The IRENA report found that solar and onshore wind are the cheapest energy sources. It states that in 2017 wind turbine prices had an average cost of $0.06 per kWh, and at times dropped to $0.04 per kWh. What is the cheapest power generation? solar power schemes Is using […]

What are natural esters? Natural esters are made from renewable natural sources, for example MIDEL eN 1204 (rapeseed/canola) and MIDEL eN 1215 (soybean). The base oil is chosen to give the best possible fit to the application; however unlike synthetic esters the properties of these base oils cannot be significantly altered. What are the main […]

What are 2 ways to keep a gas dissolved in a liquid? The solubility of a gas in a liquid will increase if: Lower the temperature of the solution , and therefore, lower the kinetic energy of the gaseous particles so they can escape the liquid phase less often. What is the general rule used […]

What colors do plants absorb best? Short answer: plant absorbs mostly “blue” and “red” light. They rarely absorb green for its mostly reflected by plant, that makes them green! Long answer : Photosynthesis is the ability of plants to absorb the energy of light, and convert it into energy for the plant. Do plants grow […]