Category: Physics

What is unit of stiffness? In the International System of Units, stiffness is typically measured in newtons per meter ( ). In Imperial units, stiffness is typically measured in pounds(lbs) per inch. How do you increase the stiffness of a material? More generally, stiffness is calculated by F/Δ. To ↑ k, ↑ A and E […]

What is the role of second messenger in hormone action? Second messengers are molecules that relay signals received at receptors on the cell surface — such as the arrival of protein hormones, growth factors, etc. But in addition to their job as relay molecules, second messengers serve to greatly amplify the strength of the signal. […]

What process produces oxygen? photosynthesis What role does cellular respiration play in the carbon cycle? Cellular respiration is the process by which organic sugars are broken down to produce energy. It plays a vital rolein the carbon cycle because it releasescarbon dioxide into the atmosphere. This means that cellular respirationcan be thought of as the […]

Are orbits stable? Although the numerical simulations all indicate chaos in planetary orbits, in a qualitative sense the planetary orbits are stable—because the planets remain near their present orbits—over the lifetime of the sun. What happens if a satellite slows down? If the satellite slows down it would crash into the object it is orbiting. […]

What percentage of the block is submerged? For example, for an object of mass 160 grams and a volume of 200 cm^3, the density is 0.8 gm/cm^3. 2) Divide density of object by the density of the liquid and express as a % to get % submerged. For floating in water of density 1.0 gm/cm^3, […]

What to do if you are being spied on? What to Do If You Suspect You Are Being Spied On: Determine who your stalker is and why they are spying on you, if you can. Below, you’ll find a long list of possible offenders and motives. Look for and collect proof of their spying. Learn […]

How do you stretch your thigh muscles? To do a thigh stretch: Lie on your right side. Grab the top of your left foot and gently pull your heel towards your left buttock to stretch the front of the thigh. Keep your knees touching. Repeat on the other side. What is the strongest muscle in […]

How many electrons are there in a neutral atom of? A neutral atom is an atom where the charges of the electrons and the protons balance. Luckily, one electron has the same charge (with opposite sign) as a proton. Example: Carbon has 6 protons. The neutral Carbon atom has 6 electrons. Which two particles in […]

What are the 5 sources of heat energy? Here are only some of your many choices for heating energy sources: natural gas, propane (LP), oil, coal, wood, electricity, heat pumps, ground source heat pumps and solar energy. Why sound is important in our daily life? Everything we know is founded upon the human body’s ability […]

What is a pink sunset called? Alpenglow (from German: Alpenglühen, lit. ‘Alps glow’, Italian: enrosadira) is an optical phenomenon that appears as a horizontal reddish glow near the horizon opposite to the Sun when the solar disk is just below the horizon. What causes the sky to turn pink? Originally Answered: What causes the sky […]