An object falls from rest at a rate of 10 m/s / s . How fast was it traveling after 5 seconds of fall?
1 answer:
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Answer:
h = 30.61 m
Explanation:
In this problem they indicate the pressure at the bottom of the lake and the density of the water, for which they must ask what is the depth of the lake.
The pressure is given by the expression
P = + rho g h
P - P_{atm} = rho g h
The gauge pressure value is P- P_{atm} = 3 105 N / m²
h =
let's calculate
h =
h = 30.61 m
Answer:
The correct option is D
Explanation:
From the question we are told that
The intensity of the first electromagnetic wave is
The amplitude of the electric field is
The intensity of the second electromagnetic wave is
Generally the an electromagnetic wave intensity is mathematically represented as
Looking at this equation we see that
=>
=>
=>
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