Answer:
The correct option is : B. stagnation
Explanation:
Air mass is a volume of air, which is described on the basis of water vapor content and temperature. It has the ability to adapt to the characteristics of surface below it and can travel thousands of miles from its source region.
An ideal source region of an air mass must fulfill the following two criteria:
1. It should be a large and uniform area.
2. the area should have stagnant circulation of atmospheric air .
It's true
work measure by joule.
Energy = work/time
= joule/s .
and joule/s represents watt
Answer:
A solar flare as it may harm satellites and aircrafts flying near poles
Explanation:
Since solar flare is electro magnetic waves going to Earth the waves will mostly get absorbed by the north and south poles resulting in the aurora borealis, but if the solar flare is strong enough it may stop communications and engines in satellites and aircrafts and in result harming them
Answer:
The greatest advantage of SI is that it has only one unit for each quantity (type of measurement). This means that it is never necessary to convert from one unit to another (within the system) and there are no conversion factors for students to memorize.
Explanation:
I hope it works
Answer:
P = 3.92 10¹⁰ W
Explanation:
The power is data by the expression
P = W / t
the work of a force is
W = F. y
the bold ones represent vectors. In this case the displacement is vertical upwards and the vertical forces upwards, therefore the angle is zero and the cos 0 = 1
W = F y
we substitute
P = F y / t
P = F v
as the body rises at constant speed the acceleration is zero and from the equilibrium condition
F -W = 0
F = mg
we substitute
P = m g v
let's calculate
P 1.00 10⁹ 9.8 4
P = 3.92 10¹⁰ W