Answer:
8N and 32N
Explanation:
Given that a light board, 10 m long, is supported by two sawhorses, one at one edge of the board and a second at the midpoint. A small 40-N weight is placed between the two sawhorses, 3.0 m from the edge and 2.0 m from the center.
To calculate the forces that are exerted by the sawhorses on the board, we must consider the equilibrium of forces acting on the board.
Let the two upward forces produce by the saw horses be P1 and P2
Assuming that the weight is negligible
Sum of the upward forces = sum of the downward forces.
P1 + P2 = 40 ....... (1)
Also, the sum of the clockwise moment = sum of the anticlockwise moments.
Let's assume that the board is uniform. The weight will act at the centre.
Taking moment at the centre:
P1 × 5 + 40 × 2 = 0
P1 = 40 / 5
P1 = 8N
Substitute P1 into equation 1
8 + P2 = 40
P2 = 40 - 8
P2 = 32N
Answer:
9.6m/s
Explanation:
Using the equation S=d/t where s=speed, d=distance, and t=time
plug in the known variables
S=120m/12.5s
S=9.6m/s
Explanation:
Classical Thermodynamics studies the relationships between the State functions of the system: i.e. Pressure, Temperature, Volume, Energy, Entropy etc. In classical thermodynamics we pretend that we don’t know anything about the microscopic constituents (atoms) of our thermodynamic system. We do not talk about concepts like microstates, or ensemble averages, since such concepts require a more fine-grained perspective of the universe.
Statistical Thermodynamics explores how particular microscopic elements of the structures can be statistically related to the functions of the state. Depending on the limit in which we are, these microscopic elements can be either classically or mechanically quantified. In the end, nearly all statistical thermodynamics are derived by summing up the microscopic properties to derive equations for the functions of the macroscopic state.
Answer:
every 16 waves, 7 seconds pass
Explanation:
32 divided by 2 is 16
14 divided by 2 is 7
If<span> the </span>speed<span> of the </span>object<span> becomes </span>double<span>, </span>its kinetic energy<span> changes to four times the initial </span>kinetic energy<span>. Hope it help!</span>