What is the example of not compound? A non-compound means which does not combine with two elements. Some examples are Br2 which is a diatomic molecule. How do you tell the difference between a molecule and a compound? A molecule is a group of two or more atoms held together by chemical bonds. A compound […]
Which stop as soon as the incident radiation is cut off?
Which stop as soon as the incident radiation is cut off? If the luminescence immediately stops when the exciting radiation is cut off, it is fluorescence; if the luminescence continues, it is phosphorescence. The detector is usually placed perpendicular to the path of the incident radiation in order to eliminate the possibility of monitoring the […]
Why does the population increase at a fast rate?
Why does the population increase at a fast rate? This rapid growth increase was mainly caused by a decreasing death rate (more rapidly than birth rate), and particularly an increase in average human age. By 2000 the population counted 6 billion heads, however, population growth (doubling time) started to decline after 1965 because of decreasing […]
How deep can a human go underwater with scuba gear?
How deep can a human go underwater with scuba gear? Adults without any training can go as deep as 12 meters (40 feet). Adults with basic open water certification can go as deep as 18 meters (60 feet). Advanced divers can go as deep as 40 meters (130 feet). Children, even those with certification can […]
Why do magnetic fields exist?
Why do magnetic fields exist? What is the origin of the magnetic field? Magnetic fields occur whenever charge is in motion. As more charge is put in more motion, the strength of a magnetic field increases. Magnetism and magnetic fields are one aspect of the electromagnetic force, one of the four fundamental forces of nature. […]
How important is axle nut torque?
How important is axle nut torque? Proper torque is critical for two reasons. First, it secures the axle nut so it won’t work itself loose and back off. Second, the proper torque keeps the correct load on a hub assembly needed for longer bearing life. When you’re removing the wheel hub nut, you can use […]
What is the force of gravity called?
What is the force of gravity called? Gravity, also called gravitation, in mechanics, the universal force of attraction acting between all matter. On Earth all bodies have a weight, or downward force of gravity, proportional to their mass, which Earth’s mass exerts on them. Gravity is measured by the acceleration that it gives to freely […]
Can you say Godspeed at a funeral?
Can you say Godspeed at a funeral? Godspeed conveys your wishes for God’s blessings to someone for a safe journey. It’s not appropriate for a bereaved person. Is Godspeed a religious term? The important thing to remember is that godspeed is not petitioning God or is not a religious term, but it is used to […]
What forces cause the tennis ball to slow down?
What forces cause the tennis ball to slow down? A: Drag is the force of flight that slows down objects, like tennis balls and planes, in the air. Drag can be caused by differences in air pressure and friction on the object’s surface. What is the average contact force between ball and racket? The huge […]