Answer:
<h3>The answer is 12 m/s²</h3>
Explanation:
The acceleration of an object given it's mass and the force acting on it can be found by using the formula
f is the force
m is the mass
From the question we have
We have the final answer as
<h3>12 m/s²</h3>
Hope this helps you
Answer:
Explanation:
a ) Thermal efficiency = work output / heat input
= .38 MW / 1 MW = .38
OR 38%
Heat rejected at cold reservoir = heat input - work output
1 MW - .38 MW
= 0.62 MW.
b ) For reversible power output
efficiency = T₂ - T₁ / T₂ ; T₂ is temperature of hot reservoir and T₁ is temperature of cold reservoir.
= 1200 - 300 / 1200 = 900 / 1200
= .75
or 75%
rate at which heat is rejected
= 1 - .75 x 1
= .25 MW .
The slope is always
(the change in 'y')
divided by
(the change in 'x') .
This line is so easy ... it crosses all the corners of the boxes,
so you have tons of choices of what 2 points to pick.
But let's just pick the ends of the line.
From the beginning to the end of the line:
-- the change in 'y' is 4 meters
-- the change in 'x' is 40 seconds
Slope = (the change in 'y') divided by (the change in 'x') .
= (4 meters) / (40 seconds)
= 0.1 meter/second .
- <em>S</em><em>peed </em><em>=</em><em> </em><em>8</em><em> </em><em>m/</em><em>s</em>
- <em>Distance</em><em> </em><em>=</em><em> </em><em>3</em><em>2</em><em> </em><em>m</em>
<u>We need to find time</u>
<h3>
We know that ,</h3>
<h3>
So ,</h3>
<h3>
<u>Substuting</u><u> the</u><u> values</u></h3>
As per the question a frog jumps 5 m towards east.
Frog again jumps 2 m north.
Let the displacement along east is denoted by vector A and the displacement towards north is denoted as vector B.
Hence magnitude of A = 5 m
Magnitude of B = 2 m
We are asked to calculate the total displacement.
Here the angle between them is 90 degree as A is towards east and B is towards north.
As per parallelogram law of vector addition,the magnitude of total displacement [R] will be-
[cos90= 0]
[ans]
