How do you find the speed of a molecule? RMS Speed of a Molecule v rms = v 2 – = 3 k B T m . v rms = v 2 – = 3 k B T m . The rms speed is not the average or the most likely speed of molecules, as […]
What type of energy does a roller coaster have at the top of a hill?
What type of energy does a roller coaster have at the top of a hill? kinetic energy Does a roller coaster have mechanical energy? They make each hill that follows smaller to compensate for this decrease in mechanical energy. Eventually the roller coaster changes most of its mechanical energy and is able to come to […]
How do you spell the sound of a drum roll?
Can human eye see real images?
What does snow do to trees?
What does snow do to trees? Excess snow can damage trees and woody shrubs by bending, breaking and splitting them or causing them to fall or uproot. Whether woody plants will be damaged in one of these ways depends upon several factors. Coniferous evergreens, for instance, can bear more snow weight than broadleaf evergreens. What […]
Why does the small pebble sink in water?
Why does the small pebble sink in water? The reason that most rocks sink is because of the law of buoyancy, which is all about how things float or sink. This law is also called Archimedes’ Principle. Archimedes’ Principle says this: An object will float if it displaces as much water as it weighs. Why […]
How long does it take for boiling water to reach room temperature?
How long does it take for boiling water to reach room temperature? Cooling from 100 to 45 in a closed container, not sealed so you don’t get a vacuum, probably takes 100 minutes or so. 50–45 20 min, but you said open pot, so it’s faster, as you get material loss (evaporation/”sensible heat”) as the […]
How many years will it take to clean the ocean?
How many years will it take to clean the ocean? How long will it take to clean up a gyre? A complete cleanup of a gyre is unrealistic, but calculations show we can clean up 50% of the Great Pacific Garbage Patch five years from full-scale deployment of our systems. Why are ocean gyres important? […]
Are NPN and PNP transistors interchangeable?
Are NPN and PNP transistors interchangeable? Answer: NPN and PNP transistors are interchangeable if you remember one simple rule: A bipolar transistor is essentially two back-to-back diodes with the base being the common connection. The collector (C), on the other hand, goes to +V — in effect, reverse biasing that diode. Can you convert PNP […]