The units of pressure are called derived units because it is derived from base unit, which is distance and a derived unit which is force. Force is derived from acceleration, a derived unit as well, and mass, a base unit; which makes it a derived unit.
They will say hamsters are related to birds lol
Answer : The correct option is (A) " inverse plot, ".
Explanation:
The atmospheric density is defined as the mass of the per unit volume of the atmosphere of earth. It is measured in .
The atmospheric density on a certain planet is found to decrease as altitude increases. So, there is an inverse relationship between the density and the altitude.
From the attached graph, it is clear that there will an inverse plot for altitude vs atmospheric density.
Let point M in the graph shows 1,291 km. So, density at point M should be in between and less than
So, the density can be
Out of given options, the correct one must be (A) because the point M lies closer to point A.
So, correct option is (A) " inverse plot, ".
Answer:
d = 2.54 [m]
Explanation:
Through the theorem of work and energy conservation, we can find the work that is done. Considering that the energy in the initial state is only kinetic energy, while the energy in the final state is also kinetic, however, this is zero since the body stops.
where:
W = work [J]
Ek1 = kinetic energy at initial state [J]
Ek2 = kinetic energy at the final state = 0.
We must remember that kinetic energy can be calculated by means of the following expression.
We know that work is defined as the product of force by distance.
where:
F = force [N]
d = distance [m]
But the friction force is equal to the product of the normal force (body weight) by the coefficient of friction.
Now solving the equation for the work.