Category: Physics

Why is potential energy negative in an atom? When a stable atom is formed, the electron is attracted to the nucleus, r is less than infinity, and the energy will be negative. A negative value for the energy implies that energy must be supplied to the system if the electron is to overcome the attractive […]

What is the relation between charge and mass? The charge-to-mass ratio (Q/m) of an object is, as its name implies, the charge of an object divided by the mass of the same object. This quantity is generally useful only for objects that may be treated as particles. Why does oxygen need 2 electrons? Oxygen needs […]

What is full form of SI unit? Système international What is called 1 unit? A unit is any measurement that there is 1 of. So 1 meter is a unit. And 1 second is also a unit. And 1 m/s (one meter per second) is also a unit, because there is one of it. What […]

What is the reading on the vernier calipers? The main scale reading is the first reading on the main scale immediately to the left of the zero of the vernier scale (3 mm), while the vernier scale reading is the mark on the vernier scale which exactly coincides with a mark on the main scale […]

What is the most calming color to paint a bedroom? For a relaxing atmosphere in your bedroom, look to cooler hues — shades of gray, blue, green and purple — to lend a hand. These colors have been shown to reduce stress and anxiety. They can also make a space seem more expansive, so they’re […]

Can you use an electric motor as a generator? Always use caution when working with electricity. Your permanent magnet electric motor can be used as a generator. All that needs to be done is to apply an external power source to spin the shaft of any permanent magnet electric motor and your motor becomes a […]

How long should ice be used to reduce swelling? Cold will reduce pain and swelling. Apply an ice or cold pack right away to prevent or minimize swelling. Apply the ice or cold pack for 10 to 20 minutes, 3 or more times a day. What are puffy ankles a sign of? Common causes of […]

Why is coffee so addictive? How Caffeine Affects the Brain. Caffeine is addictive because of the way that the drug affects the human brain and produces the alert feeling that people crave. Soon after caffeine is consumed, it’s absorbed through the small intestine and dissolved into the bloodstream. Is Quitting caffeine good? 2. You’ll sleep […]

Why is incomplete combustion bad? Incomplete combustion occurs when the supply of air or oxygen is poor. Water is still produced, but carbon monoxide and carbon are produced instead of carbon dioxide. The carbon is released as soot . Carbon monoxide is a poisonous gas, which is one reason why complete combustion is preferred to […]

How fast can a human move? 28 mphMaximum, Running How fast can a human react? about 250 milliseconds What is the average reaction time for a 13 year old? Both are near the average reaction time for humans which 0.25 seconds. According to our results, children have an average reaction time of 0.25673 seconds and adults […]