When was Earth’s magnetic field strength high and when was it lower

Geography

1 answer:

Alex Ar [27]3 years ago

4 0

Answer:

Over the last two centuries the dipole strength has been decreasing at a rate of about 6.3% per century. At this rate of decrease, the field would be negligible in about 1600 years. However, this strength is about average for the last 7 thousand years, and the current rate of change is not unusual.

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Mercury in a box have density is 30000kg/m^3 height is 20 dm. Determine the pressure of Mercury .

Musya8 [376]

Answer:The pressure of Mercury = 588,600Pa

Explanation:

The pressure of Mercury is given as

p=h x ρ x g

Where h =height= 20 dm

changing to meters

10 decimeters (dm) =1 meter

20dm =2 meter, 2m

ρ is the density =30000-kg/m³

g , gravity = 9.81-m/s²

Pressure = 2.0m x 30000-kg/m³ x 9.81-m/s²

588,600 kg.m/ s²/m² =588,600 N/m²

The pressure of Mercury=588,600Pa

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3 years ago

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AlladinOne [14]

Answer:

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tamaranim1 [39]

Answer:

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Explanation:

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