Category: Physics

What has 7 protons and 9 Neutrons? Fluorine Which is heavier neutron or proton? High on this list are the masses of subatomic particles. Dozens of particles are known to physicists, but the most familiar are the constituents of atoms: electrons, protons and neutrons. The neutron is very slightly heavier than the proton, by about […]

How much louder is 6 dB? The established reference is 10dB for twice as loud in perception, based on peer review and subjective comments from a cross section of human subjects in experimental lab conditions. Certain absolutes are simply references we go by. In many examples, some of these absolutes can be shown to be […]

What does a dew point of 69 mean? Dew point below 55° = Very comfortable, you don’t even notice the humidity. Dew point of 55° to 60° = Pretty comfortably but you notice a touch of humidity. Dew point of 60° to 65° = Starting to feel humid but not too bad. Dew point of […]

Which is the richest mineral in India? India’s major mineral resources include Coal (4th largest reserves in the world), Iron ore, Manganese ore (7th largest reserve in the world as in 2013), Mica, Bauxite (5th largest reserve in the world as in 2013), Chromite, Natural gas, Diamonds, Limestone and Thorium. Which is the largest and […]

Why do bulbs in a series circuit get dimmer? Why bulbs in series are dimmer The current going through them is smaller because two bulbs in series have a higher resistance than a single bulb. Each charge only gives up some of its energy in each bulb, i.e. the p.d. across each bulb is smaller. […]

Can hydrogen be produced from sea water? “The only sustainable way to do that is to use renewable energy and produce it from water. So, the holy grail of producing hydrogen would be to combine the seawater and the wind and solar energy found in coastal and offshore environments.” Despite the abundance of seawater, it […]

What is hydrogen bonding What are its types explain with examples? Hydrogen bond is a electrostatic attraction between a hydrogen atom which is bond to a more electronegative atom such as Nitrogen, Oxygen, fluorine. These are two types of hydrogen bonds :- 1) Intermolecular Hydrogen bonding :- It occurs between two separate molecules. Eq :- […]

Can you leave garden hoses out all winter? A: Hoses can be stored outside as long as you make sure to drain all of the water from the hose. Hoses can be drained easily by running them over a tall place where gravity forces water to exit the hose. This ensures that the hose won’t […]

What are the causes of hysteresis? Hysteresis loss is caused by the magnetization and demagnetization of the core as current flows in the forward and reverse directions. As the magnetizing force (current) increases, the magnetic flux increases. How does hysteresis affect accuracy? IEC 61298-2 states that accuracy must include Hysteresis, Non-Repeatability and Non-Linearity. Hysteresis is […]

What are vector types? Types of Vectors List Zero Vector. Unit Vector. Position Vector. Co-initial Vector. Like and Unlike Vectors. Co-planar Vector. Collinear Vector. Equal Vector. What is a vector in science? Vectors are used in science to describe anything that has both a direction and a magnitude. The ball’s velocity vector describes its movement—the […]