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3 years ago

True or False: Warm air has greater air pressure than cool air 21 points

Physics

2 answers:

alukav5142 [94]3 years ago

8 0

Answer:

False

Explanation:

Warmer air is less dense than cold, which is why warm air tends to rise and cold air sinks. Being acted on by gravity, colder, denser air weighs more and exerts greater pressure per unit area.

S_A_V [24]3 years ago

7 0

Answer:

False

Explanation:

Cool air is denser than warm air, cool air has greater air pressure than warm air.

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A converging lens of focal length 20 cm is used to form a real image 1.0 m away from the lens. How far from the lens is the obje

Galina-37 [17]

Answer:

0.25 m

Explanation:

We can solve the problem by using the lens equation:

$\frac{1}{f}=\frac{1}{p}+\frac{1}{q}$

where

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q is the distance of the image from the lens

In this problem, we have

f = +20 cm=+0.20 m (the focal length is positive for a converging lens)

q = +1.0 m (the image distance is positive for a real image)

Solving the equation for p, we find

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2 years ago

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solong [7]

Answer:

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Explanation:

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3 years ago