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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?
A number A is said to be greater than another number B is A - B is more than 0. If A is positive and B is negative, then A - B is always positive and so each positive number is greater than each negative number.
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.
