10/9
Explanation:
option 2 is the correct answer
Answer:
Molecular formulas explains how many atoms of each element are in a compound, and empirical formulas explains the simplest or reduced ratio of elements in a compound. For instance, If a compound's molecular formula cannot be further reduced any more, then the empirical formula is the same as the molecular formula.
Answer:
The terminal speed is 74.833 m/s
Explanation:
The drag force is equal to square of speed:
Fdrag = k*v²
According Newton`s law:
Fnet = m*a
m*g - k*v² = m*a
If terminal speed, the net force is zero.
Answer:
a) 7.02 W/m²
b) 1.53 J
Explanation:
Given
Amplitude of the electric wave, = 72.7 V/m
Area of flow, A = 0.0211 m²
Time taken, t = 10.3 s
To calculate the Intensity, S. We use the formula
I = E(rms)² / (cμ), where
E(rms) = E / √2 = 72.7 / √2
E(rms) = 72.7 / 1.4142
E(rms) = 51.41
c = 2.99*10^8
μ = 1.26*10^-6
I = 51.41² / [(2.99*10^8) (1.26 x 10^-6)]
I = 2642.99 / 376.74
I = 7.02 W/m²
U = energy = IAt
U = (7.02) * (0.0211) (10.3) J = 1.53 J
Answer:
An earthquake is a trembling movement of the earth's crust. These tremors are generally caused by shifts of the plates that make up the earth's surface. ... A tsunami (pronounced soo-NAHM-ee) is a series of huge waves that occur as the result of a violent underwater disturbance, such as an earthquake or volcanic eruption.
Explanation:
