Pressure is defined as .....................over a given area.
Force
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SI Unit of Pressure
Pascal
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Will air pressure be high on top of the mountain or on the beach?
Beach
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Does water pressure increase or decrease the deeper you go?
Increase
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Do liquids and gases also exert pressure?
Yes
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why does a sharp knife cut more easily than a blunt knife?
it has a smaller area of contact when it is used rather than a blunt knife so the pressure of the knife is much greater than the pressure of the blunt knife of
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what do vehicle brakes use?
Pressure
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what does pressure in a liquid increase with?
depth and density
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why should food never be heated in a sealed can?
pressure of gas is increased as the gas molecules move about quickly in different directions -the heat gives the molecules more kinetic energy -there are more
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If you try to push a pin with pointed end,it will pierce through easily.Why?
smaller the area ,higher the pressure
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Camels have large flat feet .Why?
Pressure
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How can pressure be reduced?
By increasing the surface area
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Calculate the force if the area of cross-section is 20 cm^2 and the pressure exerted by the body is 12500 Pa.
25 N
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If a force of 20 N is applied and the distance between the hinge of the door and the point of application of force is 40 cm, then find the magnitude of moment of force.
8 Nm
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A force of 16 N acts on an area of 50 cm^2. What is the magnitude of pressure in pascal?
3200 Pa
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Friction always acts in the _______ direction to that in which the object is moving.