Does volcanic ash poison water? The USGS adds, “closer to the volcano, water-soluble components that cling to particles of glass and crystals in the ash may lead to chemical changes,” which can temporarily make the water too toxic to drink. Smaller pieces of ash in particular pose significant problems for fresh water supplies. Does volcanic […]
Why did AM radio die out?
Why did AM radio die out? The decline in AM audio was due more to regulation than to method of modulation. One aspect of radio not understood by most listeners is the concept of occupied bandwidth, or the amount of spectrum that a station uses to transmit its signal. Are old radios dangerous? Vintage radio […]
Which is a property of a covalent compounds?
Which is a property of a covalent compounds? Covalent compounds have bonds where electrons are shared between atoms. Due to the sharing of electrons, they exhibit characteristic physical properties that include lower melting points and electrical conductivity compared to ionic compounds. What are the five properties of an ionic compound? Properties Shared by Ionic Compounds […]
Is reversible work path dependent?
Are multiple choice tests easier?
Are multiple choice tests easier? “Multiple-choice items can be easier than open-ended questions asking the same thing. This is because it is harder to recall an answer than to recognize it.” The level of difficulty of multiple-choice questions may vary greatly, of course. However, it is just as possible to happen on an open-response question. […]
Is the site of photosynthesis in plant cells?
Is the site of photosynthesis in plant cells? What is a chloroplast? A chloroplast is an organelle within the cells of plants and certain algae that is the site of photosynthesis, which is the process by which energy from the Sun is converted into chemical energy for growth. Can photosynthesis happen without light? At night, […]
What is the symbol for equivalent to?
What is the symbol for equivalent to? Algebra symbols Symbol Symbol Name Meaning / definition ≡ equivalence identical to ≜ equal by definition equal by definition := equal by definition equal by definition ~ approximately equal weak approximation Why is 7 a lucky number? Biblical scholars point out that the number seven is quite significant […]
What is the minimum thickness of the soap bubble?
What is the minimum thickness of the soap bubble? 141nm . What is the minimum thickness of a soap bubble needed for? PleaWhat is the minimum thickness of a soap bubble needed for constructive interference in reflected light if the light incident on the film has wavelengths 900 nm ? Assume the refractive index for […]
Which is more costly connection of bulbs in series or parallel?
Which is more costly connection of bulbs in series or parallel? The series circuits lights don’t last very long. The series circuit is dimmer as it gets longer. The parallel lights use more energy. The parallel lights are more expensive to make. Why is current higher in parallel than in series? The parallel circuit has […]