Category: Physics

Why the Colour of shadow is always black? Shadows most often appear black because the visible light cannot make its way past the obstruction, if there is no light falling on an object then it will be black as there is no light to reflect. As to why black is the absence of light, it […]

Who is the father of science history? Galileo Galilei What was invented during the 1600s? 46 Items listed When Invention Place 1600 The Vice Europe 1604 Mine Railway England 1608 Telescope Netherlands 1609 Newspaper Germany What is the most important invention in human history? The Greatest Inventions In The Past 1000 Years Invention Inventor 1 […]

How do you solve relative error? To calculate relative error, subtract the measured value by the real value and then divide the absolute of that number by the real value to get the relative error. We can then multiply by 100% to get the percent error. What is actual error? The actual error, as said […]

How do you tell if the tide is coming in or out? You can tell if the tide is coming in or out by reading a local tide table since they list the predicted times that the tide will be highest and lowest. In the time that the tide shifts from its lowest point to […]

Which types of wheels Cannot be used with a tubeless tire? Explanation: Wire wheels cannot be used with a tubeless tire. Wire wheels are expensive due to their construction. The rim of a wired wheel has holes, due to which it is not possible to fit tubeless tires on wire wheels. Which is better tube […]

Did they used to spray kids with DDT? Is it safe? DDT was sprayed in America in the 1950’s as children played in the spray, and up to 80,000 tons a year were sprayed on American crops. There is some research suggesting that it could lead to premature births, but humans are far better off […]

What is the electron group geometry of cl2o? Structure. The structure of dichlorine monoxide is similar to that of water and hypochlorous acid, with the molecule adopting a bent molecular geometry (due to the lone pairs on the oxygen) and resulting in C2V molecular symmetry. How many electron groups are in SF2? Each bond uses […]

What are some examples of decomposers? Examples of Decomposers in Terrestrial Ecosystems Beetle: type of shredder that eats and digests detritus. Earthworm: type of shredder that eats and digests detritus. Millipede: type of shredder that eats and digests detritus. Mushroom: type of fungi that grows out of the ground or the dead material it’s feeding […]

Is NaCl acidic or basic? A salt that is derived from the reaction of a strong acid with a strong base forms a solution that has a pH of 7. An example is sodium chloride, formed from the neutralization of HCl by NaOH….Salts That Form Neutral Solutions. Salt formed from: Salt Solution Weak acid + […]

Why the power magnet is concentrated at the pole? The magnetic field of a bar magnet is strongest at either pole of the magnet. The force is weaker in the middle of the magnet and halfway between the pole and the center. The magnetic field gets weaker the further you get from either pole, so […]