Answer:
option A
Explanation:
the correct answer is option A
when the air temperature increases the relative humidity decreases.
When temperature increase the ability to hold water vapor decreases.
higher the water vapor more will be the amount of moisture content.
it take less water vapor to saturate air in a city with low temperature compared with high air temperature.
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Answer:
<h2>0.094 kg</h2>
Explanation:
Latent heat of vaporization of 
at 37°C is 
.
When the sweat on our body evaporates, it absorbs energy from our body to overcome it's Latent heat of vaporisation. Thus our body cools down when sweat evaporates.
So, Energy absorbed by sweat to evaporate = Energy lost by body
Specific heat capacity of human body = 
. Jogger weights 60.4 kg. Body temperature decreases by 
Energy absorbed from body = 
∴ 0.094 kg of sweat has evaporated from the body.
Explanation:
The question is incomplete. To get the voltage V across the resistors, we need to total current flowing in the circuit.
Let the current I = 6 A
According to ohms law, V = IRt
V is the total voltage
I is the total current
Rr is the total effective resistance
Since the 2 4ohms resistors are connected in parallel;
1/Rt = 1/4 + 1/4
1/Rt = 2/4
Cross multiply
2Rt = 4
Rt = 4/2
Rt = 2 ohms
Get the voltage V.
V = IRt
V = 6(2)
V = 12V
Hence the required voltage will be 12V
<em>Note that the value of the current used was assumed. The same calculation can be employed for any value of the current</em>
