Category: Physics

How do you get marshmallows to sink? When you squish the marshmallow, you squeeze out the air, making it denser than the water. Now the flat marshmallow will sink. The more you squish the marshmallow, the lower it will sink. If you are having trouble with a large marshmallow, try a mini marshmallow. What liquid […]

Why is crystallization done class 11? Crystallisation of the filtrate This is done to ensure uniform evaporation and to prevent formation of a solid crust. When the volume of the solution is reduced to one half, dip one end of a glass rod in the concentrated solution and cool the drop by blowing on it. […]

What if Earth had a 90 degree tilt? If the earth was tilted by 90 degrees the seasonal changes would be at the most extreme. The Earth’s pole would point directly at the sun at a point on the track around the sun. This would produce very hot temperatures at one pole while at the […]

What is under beach sand? Often, underneath the loose sand of a beach is a layer of hard, compacted sand, which could be on its way to becoming sandstone if the necessary cement, pressure and heat ever appear — and if is not eroded by severe storms. What is made from sand? Industrial sand is […]

How do you calculate channel capacity when SNR is present? Hence, the channel capacity is directly proportional to the power of the signal, as SNR = (Power of signal) / (power of noise). so for example a signal-to-noise ratio of 1000 is commonly expressed as: 10 * log10(1000) = 30 dB. What is channel capacity? […]

What are three uses for Convex mirrors? Convex mirrors are used inside the buildings, They are also used in making lenses of sunglasses, They are used in the magnifying glass, They are used in securities and they are used in telescopes. What lens is thicker in the middle than at the edges? A single piece […]

How much louder is 6 dB? The established reference is 10dB for twice as loud in perception, based on peer review and subjective comments from a cross section of human subjects in experimental lab conditions. Certain absolutes are simply references we go by. In many examples, some of these absolutes can be shown to be […]

What does a dew point of 69 mean? Dew point below 55° = Very comfortable, you don’t even notice the humidity. Dew point of 55° to 60° = Pretty comfortably but you notice a touch of humidity. Dew point of 60° to 65° = Starting to feel humid but not too bad. Dew point of […]

Who provides a good or service? Economics- vocab words A B consumers one who buys goods or services for personal use rather than for resale or use in production or manufacturing. producers a person, group, or business that makes goods or provides services to satisfy consumers’ needs and wants. How do we meet our needs […]

Is there any time lag between action and reaction? 1 Answer. At any instant in time the action and reaction forces are equal – but since as Sofia pointed out they act on different bodies, that doesn’t mean they “cancel out”: each of the bodies experiences one of the forces and accelerates accordingly. How is […]