What does it mean when a ship honks 3 times? SHE: Why do they honk three times when they come into port? HE: They are signalling that they are coming home. There’s an old legend of Arturo, a Portuguese fisherman who met a beautiful girl when he came into port. How much does a 100 […]
What are the four measures of a wavelength?
What are the four measures of a wavelength? The wavelength λ is the distance between two adjacent crests (or troughs) and is given in meters….1.2 The measures of a wave: velocity, amplitude, wavelength and frequency. c = λ = λ f T What are 2 ways to measure wavelength? Terms in this set (5) What […]
How do you tell if a compound is a cation or anion?
Can you still buy incandescent lightbulbs?
Can you still buy incandescent lightbulbs? The reports typically suggest that consumers get used to buying pricier, more efficient compact fluorescent or LED bulbs, or else stock up on incandescents while supplies last. Unfortunately, little of that is true. There is no such thing as an incandescent light bulb ban in the United States. Can […]
Which is lighter gas hydrogen or helium?
Which is lighter gas hydrogen or helium? Hydrogen and helium are the most commonly used lift gases. Although helium is twice as heavy as (diatomic) hydrogen, they are both significantly lighter than air, making this difference negligible. Thus helium is almost twice as dense as hydrogen. Is helium cheaper than hydrogen? Furthermore, hydrogen is approximately […]
What is the total energy of the universe?
What is the total energy of the universe? Thus, “the gravitational field has negative energy. In the case of a universe that is approximately uniform in space, one can show that this negative gravitational energy exactly cancels the positive energy represented by the matter. So the total energy of the universe is zero.” Why energy […]
Why can diamond not dissolve?
Why can diamond not dissolve? This is because of the relatively large amount of space that is “wasted” between the sheets. is insoluble in water and organic solvents – for the same reason that diamond is insoluble. Attractions between solvent molecules and carbon atoms will never be strong enough to overcome the strong covalent bonds […]
Can you contract the coronavirus disease by touching a surface?
Can you contract the coronavirus disease by touching a surface? Like the common cold, coronavirus infection usually occurs through close contact with a person with novel coronavirus via cough and sneezes or hand contact. A person can also catch the virus by touching contaminated surfaces if they do not wash their hands. Are tobacco users […]
Can you see muscle growth in a week?
How does force affect swimming?
How does force affect swimming? The effect of buoyancy in swimming is best described by Archimedes’ principle: a body fully or partially submerged in a fluid is buoyed up by a force equal to the weight of the fluid that is displaced by the body. This effectively negates any effects that gravity might have on […]