I think it is B.<span>Thermal energy decreases as water vapor rises from the ocean
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Answer:
10.5min
Explanation:
Given parameters:
Distance = 4200m
Speed = 400m/min
Unknown:
Time taken for this run = ?
Solution:
Speed is the distance divided by the time taken.
Speed =
Time =
Now insert the parameters and solve;
Time =
= 10.5min
Answer:
Power will be 0.2023 watt
And when amplitude is halved then power will be 0.0505 watt
Explanation:
We have given mass of the Piano wire m = 2.60 gram = 0.0026 kg
Length of wire l = 84 cm = 0.84 m
So mass density 
Tension in the wire T = 25 N
Frequency f = 120 Hz
So angular frequency 
And amplitude A = 1.6 mm = 0.0016 m
We have to find the generated power
Power is given by 
From the relation we can see that power 
So if amplitude is halved then power will be
times
So power will be equal to 
Answer:
<em>The two balls pass each other at a height of 5.53 m</em>
<em>vf1=17.97 m/s</em>
<em>vf2=-5.96 m/s</em>
Explanation:
<u>Vertical Motion</u>
An object thrown from the ground at speed vo, is at a height y given by:

Where t is the time and 
Furthermore, an object dropped from a certain height h will fall a distance y, given by:

Thus, the height of this object above the ground is:

The question describes that ball 1 is dropped from a height of h=22 m. At the same time, ball 2 is thrown straight up with vo=12 m/s.
We want to find at what height both balls coincide. We'll do it by finding the time when it happens. We have written the equations for the height of both balls, we only have to equate them:

Simplifying:

Solving for t:

The height of ball 1 is:

H = 5.53 m
The height of ball 2 is:

y=5.53 m
As required, both heights are the same.
The speed of the first ball is:

vf1=17.97 m/s
The speed of the second ball is:

vf2=-5.96 m/s
This means the second ball is returning to the ground when both balls meet
Answer:
car fuel
production waste (like producing plastic, car, materials)
breathing
landfill
cement production
deforestation (cutting down trees)
burning of fossil fuels (coals, oil, natural gases)
Please mark Brainliest
Explanation: