Oil must be mined from underground.
The sun light that received by the water in the ocean will increase the average temperature of the water and make it warmer.
With the help of wind and current, the warm water will spread out to another region, and increasing the average temperature in that region and affecting its overall climate.
Example The temperature rise in Valdivia<span>, Chile and in Beijing, China after receiving warm water from arctic.</span>
Answer:
option D
Explanation:
the correct Answer is option D
From the given options Equalize voltage lead acid battery has the highest value.
most of the electric circuits are connected with the ground which means circuit is connected to earth surface. The ground is said to be floating when this connection does not exist.
discharge voltage is the voltage which is at the end of the circuit.
open circuit voltage is the difference between the electric potential between the two terminals.
Answer:
Explanation:
Since the surface area of the sphere of radius 'r' is given by 4πr² the intensity of microwaves at distance 'r' can be determine by using
I(r) = P/S
Where
P is power and it is given as P= 10W
'S is the surface area S=4πr²
I is intensity and it is given as
I = 2.5W/m²
Then,
I = P/S
I = P/4πr²
Ir² = P/4π
r² = P/4Iπ
r = √(P/4Iπ)
r = √(10/4π×2.5)
r = √0.3183
r = 0.564m
You must be 0.564m far away for safety against been exposed to radiation.
