I posted this because I got it correct. The answer is 28J.
Answer:
So the answer is .7 (whatever unit)
Explanation:
The distance can be determined by using the formula:
D = W/F (Distance = Work divided by Force.
The Work is 45 J. The Force is 65 N (newtons).
So, it would be 45/65.
.70 or .7
The third hour was positive acceleration and the second hour was negative acceleration
19.6 N........weight is equal to mass multiplied by gravitational force which is 9.8 m/s2......2 x 9.8 gives 19.6 N
Answer:
b. The entropy of a pure, perfect crystalline substance at absolute zero is zero.
Explanation:
There are three laws of thermodynamics which are used to define the physical quantities and parameters like the energy, entropy, temperature. These parameters are used to characterize thermodynamic systems which are at thermal equilibrium.
The third law of thermodynamics:-
According to third law of thermodynamics, the entropy of the system at absolute zero temperature is a very well-defined constant. Also, for the entropy of the perfect crystalline solid which is at absolute zero is equal to zero exactly.
Thus, the correct option is:- b. The entropy of a pure, perfect crystalline substance at absolute zero is zero.
