Answer:
5.096*10^-8
Explanation:
Given that
The average value of the electromagnetic wave is 310 mW/m²
To find the maximum value of the magnetic field the wave is closest to, we say
Emax = √Erms
Emax = √[(2 * 0.310 * 3*10^8 * 4π*10^-7)]
Emax = √233.7648
Emax = 15.289
Now, with our value of maximum electromagnetic wave gotten, we divide it by speed of light to get our final answer
15.289 / (3*10^8) = 5.096*10^-8 T
Suffice to say, The maximum value of the magnetic field in the wave is closest to 5.096*10^-8
Answer:
q=471.19kj.kg
Explanation:water constant volume = C
First state
Quantity X1=1
Pressure=1 bar
Second state
T2=400C
Required heat transferred q in kj.kg
Assumption:
System is at equilibrium
Kinetic and Potential energy are neglected
Therefore, from 1st law of thermodynamics q - w=∆u. . . . 1
From steam table A
U1=Ug=2553.6kj.kg
U2=Vg=1625m³.kg
V1=V2=4625m³.kg
From steam Table B
Px= 7 bar
Vx=4667kj.kg
Ux=3026.6kj.kg
Py= 10 bar
Vy= 3066kj.kg
Uy=2957.5kj.kg
Assuming a Linear interpolation
Ux-V2/Ux-Vy=Vx-U2/Ux-Vy
U2 =Vx-{vx-vy}× vx-v2/Ux-Vy
U2 = 3026.6 - (3026.6-2957.3)× 4667-4625/4667-3066
=3024.79kj.kg
Therefore, from q-w=∆u
q=3024.79-253.6
=471.19kj.kg
Where u = internal energy
V= specific volume
It's the fourth choice.
This is because, since we are closer to the Earth, the Earth will have a stronger gravitational pull on us since again, we are closer.
That also explains tides, but that's just getting off topic. Hope I helped.
Answer:
2.75x10⁻¹⁰m
Explanation:
By scientific notation, we have to express 0.000000000275 m in powers.
This can be done by counting the number of zeros after the decimal and the number after 0 which is 2.
from 2 to the decimal point, we have 10 characters
so we express it scientifically as,
= 2.75x10⁻¹⁰m
for easy understanding. i have added an attachment to help you out on how to do this.