What happens to a wave when it reaches a barrier? Diffraction: A wave encountering a small obstacle tends to bend around the obstacle. This bending of the wavefront is called diffraction. When a wave encounters a barrier with an aperture, which is much smaller than the wavelength, the wave bends and spreads out as a […]
What is crust explain?
What is crust explain? “Crust” describes the outermost shell of a terrestrial planet. Earth has three layers: the crust, the mantle, and the core. The crust is made of solid rocks and minerals. Beneath the crust is the mantle, which is also mostly solid rocks and minerals, but punctuated by malleable areas of semi-solid magma. […]
What are the two types of mixture and substance?
What are the two types of mixture and substance? A mixture is made when two or more substances are combined, but they are not combined chemically. There are two main categories of mixtures: homogeneous mixtures and heterogeneous mixtures. Is oil and water a heterogeneous mixture? By definition, a pure substance or a homogeneous mixture consists […]
Why is chemical change not easily reversible?
Why is chemical change not easily reversible? chemical change never reversed because it produce new substance after reaction which is not reversible . if it is reversed , it can’t called chemical reaction , it called physical reaction. Is a chemical change reversible? In principle, all chemical reactions are reversible reactions . This means that […]
What is the lifespan of a neutron star?
Why would a researcher interested in making a casual claim not do an experiment?
Why would a researcher interested in making a casual claim not do an experiment? Why would a researcher interested in making a causal claim NOT do an experiment? There may be ethical limitations of manipulating a variable. Why is the statistical validity of a multiple regression design more complicated to interrogate than a bivariate design? […]
Is it a look or take Alook?
Is it a look or take Alook? The difference between “have a look” and “take a look” is geographical rather than semantic. The former phrase is usually used in the UK, whereas the latter is usually used in the USA. Is have a look formal? Both of the sentences that you suggested are grammatically correct, […]
Can you run jet fuel in a diesel?
Why is curiosity rover so slow?
Why is curiosity rover so slow? Originally Answered: Why does the Mars rover, Curiosity, move so slow? There are delicate instruments and experiments on board, and besides, they’re in no real “rush” to get anywhere, since so much science can be done even at the landing site while they figure out which route to pursue […]
How do you know if a sample is representative?
How do you know if a sample is representative? A representative sample should be an unbiased reflection of what the population is like. There are many ways to evaluate representativeness—gender, age, socioeconomic status, profession, education, chronic illness, even personality or pet ownership. What percentage of sample is representative? For example, in a population of 1,000 […]