1 year ago

What are the three examples that show relation between pressure and area in daily life.

Physics

1 answer:

makvit [3.9K]1 year ago

4 0

Answer: The area of the edge of a knife's blade is extremely small.

Syringes are used to take blood for blood tests.

When air is sucked out of a drinking straw, the air pressure inside if decreases and the atmospheric pressure outside forces the liquid to go inside the straw.

Explanation:

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How far from the surface of Earth is the magnitude of Earth's gravitational field equal to 7.86 N/kg?

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Answer:

7.48 x 10⁵ m

Explanation:

g = 7.86 N/kg

M = 5.97 x 10²⁴ kg, R = 6.37 x 10⁶ m.

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(R + h)² = GM/g = 6.67 x 10⁺¹¹ x 5.97 x 10²⁴ /7.86 = 5.066 x 10¹³

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1 year ago

Which of the following temparature is approximately equal to room temperature

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$\huge\boxed{\text{C. 293K}}$

Room temperature is approximately 20°C.

We can automatically eliminate choices B and D since they are not equal to 20°C.

Since some choices use the Kelvin scale, we can convert from Celsius to Kelvin using a simple formula:

K = C° + 273

Find room temperature in degrees Kelvin:

K = 20° + 273

K = 293°

Thus, the correct choice would be C. 293K.

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2 years ago

What are the three examples that show relation between pressure and area in daily life.​

What are the three examples that show relation between pressure and area in daily life.