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3 years ago

Atmospheric pressure decreases with increment in height. give reason

Physics

2 answers:

natulia [17]3 years ago

8 0

Answer:

this is because as the altitude increases the number of air molecules decreases

jekas [21]3 years ago

7 0

Answer:

pressure=height × density×acc due to gravity

pressire is directly proportional to height hence it decreses with decrease in height

here air column height is measured upside down so decreases witn increment

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4 years ago

A hockey puck slides off the edge of a horizontal platform with an initial velocity of 28.0 m/shorizontally in a city where the

kozerog [31]

Answer:

θ = 12.60°

Explanation:

In order to calculate the angle below the horizontal for the velocity of the hockey puck, you need to calculate both x and y component of the velocity of the puck, and also you need to use the following formula:

$\theta=tan^{-1}(\frac{v_y}{v_x})$ (1)

θ: angle below he horizontal

vy: y component of the velocity just after the puck hits the ground

vx: x component of the velocity

The x component of the velocity is constant in the complete trajectory and is calculated by using the following formula:

$v_x=v_o$

vo: initial velocity = 28.0 m/s

The y component is calculated with the following equation:

$v_y^2=v_{oy}^2+2gy$ (2)

voy: vertical component of the initial velocity = 0m/s

g: gravitational acceleration = 9.8 m/s^2

y: height

You solve the equation (2) for vy and replace the values of the parameters:

$v_y=\sqrt{2gy}=\sqrt{2(9.8m/s^2)(2.00m)}=6.26\frac{m}{s}$

Finally, you use the equation (1) to find the angle:

$\theta=tan^{-1}(\frac{6.26m/s}{28.0m/s})=12.60\°$

The angle below the horizontal is 12.60°

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3 years ago

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4 years ago

How long does it take (in minutes) for light to reach mercury from the sun, a distance of 6.02 × 107 km?

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if we want to convert this into minutes, keeping in mind that 1 min = 60 seconds, we should divide this value by 60:
$t= \frac{200.7 s}{60 s/min}=3.34 min$

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4 years ago

Read 2 more answers

A steel rod has a diameter of 3.75cm.Express it's diameter in millimeters and meter

romanna [79]

Answer:

3.75cm into millimetres

= 3.75 * 10

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3.75/100

= 0.0375m

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3 years ago

Atmospheric pressure decreases with increment in height. give reason​

Atmospheric pressure decreases with increment in height. give reason