Category: Physics

What is the best wood flooring to use over radiant heat? One of the best options over radiant heat is to use an engineered hardwood floor. The inherent dimensional stability of engineered hardwood floors makes it a great choice for radiant heat systems. Certain solid hardwood floors are appropriate as well. Can you put rugs […]

What happens if you enter the wrong number in ATM? It is alright if you have inserted wrong PIN number at the ATM machine twice, but the real problem occurs when your attempt fails thrice. If your card is blocked after three attempts at ATM, then some banks do block it for temporary basis. This […]

What is genetic variation in biology quizlet? Genetic variation is the diversity present in the DNA of a population. Explain how genetic variation occurs within and between populations of a species. Genetic variation within a population occurs via mutation and sexual reproduction, and can be measured using average heterozygosity. Where does genetic variation come from […]

Why do black bodies radiate? A black body is an idealized object that absorbs all electromagnetic radiation it comes in contact with. It then emits thermal radiation in a continuous spectrum according to its temperature. Much cooler objects like planets and humans emit the most radiation in the infrared. Can radiation travel through a vacuum? […]

Is it dark during solar eclipse? In a solar eclipse, the Moon moves between the Earth and the Sun. When this happens, part of the Sun’s light is blocked. The sky slowly gets dark as the Moon moves in front of the Sun. What is the longest solar eclipse ever? The longest possible duration of […]

Which of the following is not an example of the second law of thermodynamics? Which one of the following is not an example of the second law of thermodynamics? CO2 is exhaled as a by-product of aerobic respiration is not an example of second law of thermodynamics. Is the second law of thermodynamics a consequence […]

What are the high points and low points of a transverse wave called? A high point on a transverse wave is called a crest, and a low point is called a trough. Light waves and radio waves are examples of transverse waves. Longitudinal waves – If you push or pull one end of a slinky, […]

What is the average IQ of a Navy SEAL? The Navy requires an AFQT score of at least 35. Men who succeed at BUD/S traditionally have AFQT scores of 78 or better. The 78th percentile on an IQ scale roughs out at about 112. Anecdotally, many successful SEALs run in the high-120 IQ range. How […]

What type of bonds is formed when sodium combines with oxygen? Sodium will react with oxygen and form an ionic compound. What happens when sodium bonds with oxygen? When sodium (Na) atoms bond with one oxygen (O) atom, there have to be two sodium atoms, each with an extra electron. Each of these sodium atoms […]

What describes something in nature without explaining it? Unlike a theory, a scientific law describes an observed pattern in nature without attempting to explain it. A hypothesis is a possible explanation for a set of observations or answer to a scientific question. How do you know if a claim is scientific? To evaluate the scientific […]