Answer:
Hooke's law, given by 
is denoted with a negative sign to regard that the direction of restoring force that occurs opposite in direction of the force that caused the displacement 
. F represents the force required to create a spring displacement of .
Explanation:
As with many things in physics, the negative sign represents direction. In this case, after a spring is displaced a distance of from equilibrium, the restoring force created by the spring will be in opposite direction of the force applied to move the spring there, represented by F.
Answer:
The height of the hill is, h = 38.42 m
Explanation:
Given,
The horizontal velocity of the soccer ball, Vx = 15 m/s
The range of the soccer ball, s = 42 m
The projectile projected from a height is given by the formula
S = Vx [Vy + √(Vy² + 2gh)] / g
Therefore,
h = S²g/2Vx² (Since Vy = 0)
Substituting the values
h = 42² x 9.8/ (2 x 15²)
= 38.42 m
Hence, the height of the hill is, h = 38.42 m
Answer:
Explanation:
Given:
- Length of block,
- Breadth of block,
- height of block,
- Thermal conductivity of the block,
- Temperature on the hotter side,
- temperature on the cooler side,
- time for which the heat flows,
<u>REFER THE ATTACHED IMAGE FOR THE REFERENCE</u>
<em>The rate of heat flow using </em><em>Fourier's law</em><em> of conduction is given as:</em>
<u>Now the amount heat flow perpendicular to the pink surface:</u>
<u>Now the amount heat flow perpendicular to the orange surface:</u>
<u>Now the amount heat flow perpendicular to the green surface:</u>
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kodumun abd lisi aptal cajhil özürlü
Line graphs tend to show a change in data over time.
