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The surface pressure of the earth is nominally 1013.25 hectoPascals (hP), which is also referred to as 1 ATM (1 atmosphere).

The surface pressure of the earth will vary slightly according to weather conditions.

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What is the Difference between an active earth pressure and passive earth pressure?

When the wall moves away from the backfill, the earth pressure on the wall decreases. This minimum pressure is called active earth pressure. On the other hand if the wall moves towards the backfill, the earth pressure increases. This maximum pressure is called passive earth pressure.


What do you mean by step and touch potential and it's standard value?

Step Potential is the potential Difference between two points on the earth's surface, separated by distance of one pace, that will be assumed to be one meter in the direction of maximum potential gradient (IS 3043) Touch Potential is the potential difference between a grounded metallic structure and a point on the earth's surface separated by a distance equal to the normal maximum horizontal reach, approximately one meter. (IS 3043)


What is the difference between digital terrain model and digital elevation model?

DTM = Digital Terrain Model is a digital representation of the sloped contour surface of the earth. Surface features, such as man-made objects and vegetation, are not included. DEM = Digital Elevation Model is a digital representation of the sloped contour surface of the earth. Elevation data is included, along with surface features such as man-made objects and vegetation.


What is the difference between a radar altimeter and a barometric altimeter?

Radar altimeter gets altitude information by bouncing a radio wave off the surface of the Earth and determines the aircrafts altitude by measuring the length of time it takes for the signal to return. Barometric altimeters get altitude information by measuring the barometric air pressure outside the aircraft. Barometric pressure decreases as altitude increases. Radar altimeters will give altitude above ground level while barometric altimeters give altitude above sea level.


What is the difference between insulation resistance and earth resistance?

insulation resistance can be measured by means of megger, with built in d.c generator. It is measured between the conductor and the earth. earth resistance can be measured by means of earth resistance tester. For good effective earthing, th earth resistance should be of order 0.5 ohm

Related Questions

Why are some earthquakes are stronger than other?

there is a difference between the types of plate movement and a difference in the distance from the Earth's surface.


What is the difference between gauge pressure and atmospheric pressure?

Gauge pressure is the pressure measured relative to atmospheric pressure, while atmospheric pressure is the pressure exerted by the Earth's atmosphere on a surface. Gauge pressure accounts for atmospheric pressure, while atmospheric pressure is the total pressure exerted by the atmosphere.


Earths surface winds blow from regions of higher what?

Earth's surface winds blow from regions of higher air pressure to regions of lower air pressure. This movement is known as wind flow and is driven by the difference in pressure between high and low pressure systems.


What is the link between the uneven heating of the earth's surface and air movement?

Uneven heating of the Earth's surface creates temperature variations which in turn generate differences in air pressure. This pressure difference results in the movement of air masses, causing winds to blow from high pressure to low pressure areas. This process of air movement is what drives weather patterns and circulation systems on Earth.


What is the gravitational weight difference between the moon and earth?

The weight of an object on the moon's surface is 16.3% of the same object's weight on the earth's surface.


What is the Difference between an active earth pressure and passive earth pressure?

When the wall moves away from the backfill, the earth pressure on the wall decreases. This minimum pressure is called active earth pressure. On the other hand if the wall moves towards the backfill, the earth pressure increases. This maximum pressure is called passive earth pressure.


How much surface pressure does Jupiter have?

Jupiter has an average surface pressure of about 100,000 kilopascals (kPa), which is around 1,000 times the surface pressure of Earth. This high pressure is due to the immense gravity and thick atmosphere of Jupiter.


Why don't we notice a difference between mass and and weight on Earth?

Because gravity is relatively constant anywhere on Earth's surface.


What is the pressure difference between earth sea level and outer space?

The pressure at sea level on Earth is about 14.7 pounds per square inch (psi), while the pressure in outer space is close to zero psi. This means that there is a pressure difference of 14.7 psi between sea level on Earth and outer space.


What is the reason for cooling of lava on earth's surface?

1) The temperature difference between the lava an its surroundings. 2) At the surface heat can be radiated away


What three forces influence wind?

Three main forces influence wind: pressure gradient force (difference in air pressure between two locations), Coriolis force (resulting from Earth's rotation), and friction force (interaction with Earth's surface). These forces combined determine the direction and speed of winds.


How does air move from areas of high pressure to areas of low pressure?

Air moves from areas of high pressure to areas of low pressure due to the pressure difference created by the uneven heating of the Earth's surface. This pressure difference causes air to flow from high pressure areas to low pressure areas, creating wind.