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Why the weight of the objects are greater in the air than their weights in the water?
It is because the buoyancy of water is greater than that of air. In other words, the force pushing up on an object is equal to the weight of the same volume of whatever the object is in as the volume of the object. For example, a 1'x1'x1' cube submerged in pure water has an upward force on it of 62.4 pounds because the density of water is 62.4 pounds per cubic foot.
Why positive is greater than negative?
Think of the temperature scale. Comfortable air temperature may be say (+)16 oC , but a very cold air temperature may be say -20 oC The figure is greater but the temperature is much less. So think of numbers in the same way.
Why is the top of an oven hotter than the bottom?
Because - hot air is lighter than cold air - and thus it rises.
What will happen to a light ray incident on a glass-to-air boumdary at greater than the critical angle?
Anything greater than critical angle will cause the light to just be reflected.
Is it possible to have humidity greater than 100 percent?
When the air temp drops to the dew point that is 100% relative humidity - the air is saturated and condensation willf form. In general, the air temp cannot drop below the dew point so humidities greater than 100% do not occur.
What has more volume hot or cold water?
I hate questions like this one. Do you know why? Because I fear that the TEACHERS asking the question of their students are either IGNORANT of the subject matter they are supposed to be teaching or are asking a TRICK question of their students, which is almost always intellectually dishonest. Hopefully, it's just a poorly worded question by the poster of the question. Okay, I'll shut up and answer the question. A quantity of cold air can occupy a greater volume of hot air -- if there is more cold air than hot air!!!! If you've got two liters of cold air, that's a greater volume than one liter of hot air!!!!!! But what if you've got 0.1 kilogram of hot air and 0.1 kilogram of cold air? You've got the same amount of matter, right? They have the same mass: 0.1 kg. Will the hot and cold air occupy the same volume? NO!!! The hot air is less dense, which means it occupies MORE volume per unit mass than the cold air. So, if you have equal masses of hot and cold air, the hot air will have greater volume.
Which has greater volume warm air or cool air?
cold
How does cold air effect the density of gas?
'Cold' air will have less volume so the density is greater.
Does hot air have more volume than cold air?
yes 1 mole hot air have more volume then cold air
Does warm air have more density tan cold air?
Not really. Warm air usually has a higher volume than cold air, so its density is usually smaller than that of cold air.
Volume of warm air weighs less than an equal volume of cold air because?
It's less dense
Is it true that cold air can hold more moisture than an equal volume of warm air?
Yes
Is Warm air is less dense than cold air?
No it's just less dense. For the same volume of air, warm air is lighter.
Why does cold air push warm air?
Because cold air is more dense, and also contains less water vapour.
Does air with greater density contain more or less molecules than less dense air?
Yes, given the same volume of both.
Why volume of water exerts greater pressure than volume of air?
DENSER MORE PRESSURE PRESSURE PRESSURE LOOK AT SCIENCE TEXT BOOK DONT CHEAT ON WIKI Water has more density than air.
Are cold air masses denser than warm air masses?
Yes, cold air masses are denser than warm air masses. The reason for this is because heat excites atoms so they take up more volume in space. Meaning they take up more volume of heat which leaves little warmth left and a lot of cold left. The warmth is thinner and vice versa, the cold is denser.
