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1) The force which is exerted by all matter on all other matter is ______________ .
2) If a force applied is in the direction of its motion, the speed of the object ____________ .
3) Pressure exerted by a liquid
a) does not change with depth b) decreases with depth
c) increases with the increase in depth d) is different in different direction at same depth
4) Why do some people suffer from nosebleeds at high altitudes?

Dear student, 

Find the required answers below:
1. gravitational force
2. increases
3. (c) increases with increase in depth
4. Due to lack of oxygen at high altitude the air thinner and drier. This dryness causes nose to bleed.

Regards

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1.Gravitational force
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2.increases
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3.C) increases with an increase in depth
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4.When we go to high altitudes, the pressure outside the body becomes lesser than the pressure inside the body. As a result, some of the blood capillaries burst resulting in the bleeding of nose.
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1. gravitational force
2. increases
3. c increases with the increase in depth
4. The most common cause of anterior nosebleeds is dry air. A dry climate or heated indoor air irritates and dries out nasal membranes, causing crusts that may itch and then bleed when scratched or picked. Colds may also irritate the lining of the nose. Bleeding may occur after repeated blowing.
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Thanks a lot Amrat and Sarah!!
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