Answer:
1.85 J/K
Explanation:
The computation of total change in entropy is shown below:-
Change in Entropy = Sum Q ÷ T
= 

= -3.12 + 4.97
= 1.85 J/K
Therefore for computing the total change in entropy we simply applied the above formula.
As we can see that there is heat entering the reservoir so it will be negative while cold reservoir will be positive else the process would be impossible.
264Ns
Explanation:
Given parameters:
Time of the push = 3s
Force of push = 88N
Unknown:
Impulse = ?
Solution:
Impulse is defined as the change in momentum of a body when force acts on it.
Impulse = Force x time
Inputting the parameters:
Impulse = 88 x 3 = 264Ns
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The force of gravity produces acceleration in all C. freely falling objects and this is known as acceleration due to gravity
Explanation:
A body is said to be in free fall when there is only one force acting on the body: the force of gravity.
Gravity is a force that acts downward, i.e. towards the Earth's centre.
If we are near the Earth's surface, the magnitude of the force of gravity on a body is given by

where:
m is the mass of the body
g is known as the acceleration of gravity , whose value near the Earth's surface is
).
We can apply Newton's second law on an object in free-fall, to find its acceleration. In fact, we have:

where F is the force acting on the body and a is its acceleration.
Solving for the acceleration,

And substituting F,

Therefore, every object in free-fall accelerates at
towards the ground.
Learn more about free fall here:
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Answer:
The percentage of the population that is actively participating in the labor market, whether working or looking for a job, is 95% of the total working age population.
Explanation:
If the number of unemployed in a country is 19 million people, and that number represents an unemployment rate of 4%, to know the total number of economically active people in the country we must perform the following calculation:
(19,000,000 / 4) x 100 = X
475,000,000 = economically active population
However, the country has a working-age population of 500 million people, of which only 475 are actively participating in the labor market. To know the percentage that these 475 million people represent, we must perform the following cross multiplication:
500 = 100
475 = X
(475 x 100) / 500 = X
95 = X
The percentage of the population that is actively participating in the labor market, whether working or looking for a job, is 95% of the total working age population.
Answer:
a)The gravitational force would be twice as much as it is now
Explanation:
If the earth had twice its mass as it is now, the gravitational force between the sun and the earth would be twice as much as it is now.
According to Newton's law of universal gravitation "the gravitational force of attraction between bodies is directly proportional to the product of their masses and inversely proportional to the square of the distance between them".
F
= 
G is the universal gravitation constant
m is the mass
r is the distance
let mass of sun = s
mass of earth = e
new mass of sun = s
new mass of sun = 2e
input variables;
F =
------ i
F =
------- ii
From the second equation;
2F = 
2F = F
Therefore, the force will double.