Answer:
Temperature of the sink will be 191.1 K
Explanation:
We have given that heat withdrawn form the source = 10 KJ
Work done = 3 KJ
We know that efficiency is given by

Higher temperature is given by 
We have to find the lower temperature 
We know that efficiency is also given by

So 
So temperature of the sink will be 191.1 K
Answer:
A car accelerates uniformly from 5m/s to 10m/s in 5s ...
A car starts from rest and picks up a velocity of 20 m/s ...
A car accelerates uniformly from 10m/s to 20m/s in 5 ...
How much work is required to accelerate a 1000 kg car ...
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Explanation:
Explanation:
F=ma
m=3kg
F=7N
7=3a
a=7/3
acceleration=velocity/time taken
7/3=velocity/6
velocity=7/3×6/1
velocity=14ms-¹
To solve this question, we need to use the component method and split our displacements into their x and y vectors. We will assign north and east as the positive directions.
The first movement of 25m west is already split. x = -25m, y = 0m.
The second movement of 45m [E60N] needs to be split using trig.
x = 45cos60 = 22.5m
y = 45sin60 = 39.0m
Then, we add the two x and two y displacements to get the total displacement in each direction.
x = -25m + 22.5m = -2.5m
y = 0m + 39.0m
We can use Pythagorean theorem to find the total displacement.
d² = x² + y²
d = √(-2.5² + 39²)
d = 39.08m
And then we can use tan to find the angle.
inversetan(y/x) = angle
inversetan(39/2.5) = 86.3
Therefore, the total displacement is 39.08m [W86.3N]