Given:
Work done, W = 5 J
Initial energy = 8J
Final energy = 30J
Let's determine if the work done have a positive or nrgative value.
Appy the equation for the first lae of thermodynamics:
Where:
U is the change in internal energy
Q is the added heat
W is the work done
To find the work done here, we have:
Rewrite the formula for W
Where:
ΔU = 30J - 8J = 22J
Q = 5J
Thus, we have:
Therefore, the work done here is -17J.
This means the work done in this scenario has a negative value.
ANSWER:
The work done in this scenario has a negative value
the friction forces are smaller than the forward force
"physical science" is a branch of science that is based on practical tests and explanations of the different phenomena. It is based on scientific evidence and tests/experiments.
Some of the branches that are based on physical science are:
1- Astronomy
2- Electronics
3- Engineering
4- Radiology
Answer:
A main sequence star is powered by fusion of hydrogen into helium in its core
Explanation:
Answer:
Part a)
Part b)
the resistivity of corn plant is grater than the resistivity of muscle tissue in the human
Explanation:
Part a)
As we know the formula of resistance is given as
here we know that
here we have
now we have
Part b)
Resistivity of mucle tissue of human is is ranging from 15 ohm-m to 50 ohm m so here we can say that
the resistivity of corn plant is grater than the resistivity of muscle tissue in the human
