Answer:
current = 2.67 A
Explanation:
we have given,
Q(t) = t³− 2t² + 4t + 1
to find I at t = 0.7s
we know
so,
current at t= 0.7s
I = 2.67 A
hence, current comes out to be 2.67 A
Nitrogen fixing bacteria changes dead plants and animals into ammonia compounds.
<h2>What is nitrogen fixation?</h2>
Atmospheric nitrogen is converted into nitrogen oxides by the action of lightning, which helps its incorporation into the soil.
<h3>Characteristics of Nitrogen fixing bacteria</h3>
- Nitrogen is fixed by these bacteria and other prokaryotes through various metabolic processes, which convert it into different usable compounds, such as ammonia (NH3) and ammonium ion (NH4+).
- These microorganisms can be found in soil and water, or as plant symbionts.
Therefore, we can conclude that nitrogen fixing bacteria fix nitrogen from the air, that is, they originate soluble compounds by plants, such as ammonia.
Learn more about nitrogen fixation here: brainly.com/question/14726009
The heat required for the water to reach a temperature of 100 degrees C from 20 degrees C is calculated through the equation,
H = mcpdT
where m is the mass, cp is the specific heat and dT is the temperature difference. cp for water is 1 cal/g°C. Thus, the heat applied is,
H = m(1)(80) = 80m
This heat was applied for 5 minutes.
Now, recall that the heat needed to boil off the water is calculated by the equation,
H = m(hv)
where m is still mass and hv is the heat of vaporization which is equal to 540 cal/g. Thus, the heat required is,
H = 540m
We use ratio and proportional to get the time required.
80m / 5 minutes = 540 m / x minutes
The value of x from the equation is 33.75 minutes.
Answer:
A=3.33m/s
B=3.11m/s
Explanation:
Speed = total distance/time taken to cover distance
hence,
S=d/t
s=32.0/9.60
s=3.33m/s
acceleration due to gravity
v=u+at
that is (v=final velocity,u=initial velocity,a=acceleration and t= time)
from the formula
2.10=32.0+a*9.60
2.10=32.0+9.60a
CLT
9.60a=32.0-2.10
9.60a=29.9
a=29.9/9.60
a=3.11m/s
hope it correct!?