Answer:
![3.844\,*\,10^5](https://tex.z-dn.net/?f=3.844%5C%2C%2A%5C%2C10%5E5)
So a=3.844 and b=5
Explanation:
Scientific notation requests to write a number using powers of ten as a factor accompanying a real number (a) between 1 and smaller than 10 that contains the digits to exactly represent the original number. So in this case, the number 384,400 can be written as:
![384,400=3.844 \,*\,100,000= 3.844 \,*\,10^5](https://tex.z-dn.net/?f=384%2C400%3D3.844%20%5C%2C%2A%5C%2C100%2C000%3D%203.844%20%5C%2C%2A%5C%2C10%5E5)
with a=3.844, and "5" as the exponent of ten (so b=5)
Answer:
Explanation:
Let c be the circumference and r be the radius
c = 2πr , r = c / 2π , area A = π r² = π (c/2π )² = (1/4π) x c²
flux (ψ) = BA = 1 X 1/4π X c²
dψ/dt = 1/4π x 2c dc/dt =1/2π x c x dc/dt
at t = 8 s
c = 161 - 13 x 8 = 57 cm , dc/dt = 13 cm/s
e = dψ/dt = (1 / 2π )x 57 x 13 x 10⁻⁴ = 118 x 10⁻⁴ V.
A theromometer is the increase or decrease of earths atmospheric temperture, thats how you would measure the temperture of the air around you.