Is there gravity in a vacuum? In a vacuum, gravity causes all objects to fall at the same rate. The mass of the object does not matter. If a person drops a hammer and a feather, air will make the feather fall more slowly. But if there were no air, they would fall at the […]
How photon is created?
How photon is created? A photon is produced whenever an electron in a higher-than-normal orbit falls back to its normal orbit. During the fall from high energy to normal energy, the electron emits a photon — a packet of energy — with very specific characteristics. A sodium vapor light energizes sodium atoms to generate photons. […]
Is iron rusting in the presence of moist air a physical change?
Is iron rusting in the presence of moist air a physical change? Rust is a reddish-brown substance formed on iron when it has been exposed to fresh air and moisture for a long time. This process is a chemical change called rusting. What is the chemical reaction of rusting? Rusting is an oxidation reaction. The […]
What will be the pulse rate during heart attack?
Is TT tall or short?
Is TT tall or short? Genotype Symbol Genotype Vocab Phenotype TT homozygous DOMINANT or pure tall tall Tt heterozygous or hybrid tall tt homozygous RECESSIVE or pure short short Is blue eyes a genotype or a phenotype? Finally, the genotype of an organism with two recessive alleles is called homozygous recessive. In the eye color […]
Which is the thinnest layer of the earth?
Which is the thinnest layer of the earth? Inner core Which is the thinnest layer of atmosphere? Troposphere What are the 4 atmospheres? The atmosphere is comprised of layers based on temperature. These layers are the troposphere, stratosphere, mesosphere and thermosphere. A further region at about 500 km above the Earth’s surface is called the […]
What can affect a compass reading?
Which shows the formula for converting from kelvins to degrees Celsius?
Which shows the formula for converting from kelvins to degrees Celsius? C = K – 273.15. This formula to convert the temperature in Kelvin to degree Celsius is used for changing the given temperature from Kelvin to degree Celsius. What causes liquid in thermometer to drop? When heated, the molecules of the liquid in the […]
What do NS stand for?
What do NS stand for? Acronym Definition NS Nintendo Switch NS Not Sure (survey response) NS Natural Selection NS National Security What does NS mean in dating? Old Style (O.S.) and New Style (N.S.) indicate a dating system from before and after a calendar change, respectively. Usually this is the change from the Julian calendar […]
What is the speed and direction of an object?
What is the speed and direction of an object? Speed in a given direction is called velocity. What can you deduce if your distance is negative? Technically no. Negatives are usually associated with displacement, where one direction is considered positive and the opposite is considered negative. Distance is just how far you have travelled. Does […]