Answer:
The speed increases by square root 2 times.
Explanation:
Let the wave velocity initially be 'v' with tension in the string as 'T' of mass 'm'.
Given:
Initial length of the string (L₁) = L
Final length of the string (L₂) = 2L
Wave velocity in a stretched string of length 'L' is given as:
From the above equation we can conclude that if tension 'T' and mass 'm' remains the same, the wave velocity is directly proportional to the square root of length of the stretched string. Therefore,
Now, plug in the given values and solve for v₂ in terms of v₁. This gives,
Therefore, the speed of the wave is increased by square root 2 times.
Headphones, refrigerator magnets, and compasses
Hope that was helpful.
Answer:
Distance is 100m, displacement is 0m
Explanation:
Distance is how much you travelled in total (100m)
Displacement is when you compare your final and initial positions.
It is usually Final position - Initial position.
Since you start and finish at the same point, it would be 0 - 0 = 0m
So the displacement is 0m.
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d. are more expensive
Answer:
19.01 N
Explanation:
F = Force being applied to the crate = 45 N
= Angle at which the force is being applied = 
Horizontal component of force is given by
The horizontal component of the force acting on the crate is 19.01 N.
