Category: Physics

How do I know who I really am? 6 Steps to Discover Your True Self Be quiet. You cannot and will not be able to know yourself until you take the time to be still. Realize who you truly are, not who you want to be. Find what you are good at (and not good […]

Is high salinity bad? If the level of salts in the soil water is too high, water may flow from the plant roots back into the soil. This results in dehydration of the plant, causing yield decline or even death of the plant. Crop yield losses may occur even though the effects of salinity may […]

Does speed increase as pressure increases? Bernoulli’s Principle states that as the speed of a moving fluid increases, the pressure within the fluid decreases. Does increasing pressure increase speed? In this case when the gas is compressed to half the volume, the pressure is doubled. Therefore for such case, speed of the gas particles remains […]

Can you fall off the moon? Although you can jump very high on the moon, you’ll be happy to know that there’s no need to worry about jumping all the way off into space. In fact, you’d need to be going very fast – more than 2 kilometres per second – to escape from the […]

Why is the current atomic model called the electron cloud? The modern model is also commonly called the electron cloud model. That’s because each orbital around the nucleus of the atom resembles a fuzzy cloud around the nucleus, like the ones shown in the Figure below for a helium atom. The densest area of the […]

How are alkali metals extracted? Alkali metals are generally extracted by electrolysis of their ores. Only electrolytic method is suitable because of high reactive nature of alkali metals. Why do alkali metals have low density? Since alkali metals have a large atomic size and low atomic weight, they have low density. What are the properties […]

Where is my stomach in my body? The stomach is located in the upper-left area of the abdomen below the liver and next to the spleen. The stomach is located in the upper-left area of the abdomen below the liver and next to the spleen. How do you know if something is wrong with your […]

Why does a comb attract hair? The charge on the screen attracts dust. The molecules orientate their dipoles, the negative oxygen towards the comb; the positively charged hydrogens away from it. When you comb your hair with a nylon comb, both the comb and your hair become charged. The comb and your hair acquire opposite […]

Which of these is an example of negative reinforcement? Deciding to take an antacid before you indulge in a spicy meal is an example of negative reinforcement. You engage in an action in order to avoid a negative result. One of the best ways to remember negative reinforcement is to think of it as something […]

How do you find mass with only volume? The Density Calculator uses the formula p=m/V, or density (p) is equal to mass (m) divided by volume (V). The calculator can use any two of the values to calculate the third. Density is defined as mass per unit volume. What is the formula of the Mass? […]