If the tension in a rope is increased, what will happen to the speed of a wave traveling through the rope?
2 answers:
Answer:
The speed will increase.
Explanation:
Wave velocity in a rope can be discribed as :
,
where is the velocity,
is the tension and,
is the linear density of mass (this is mass over rope length).
As it can be seen from the formula, velocity is directly proportional to the tension, this means that if tension increase so it will the velocity.
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Answer:
Explanation:
The formula for Kinetic Energy is
. Filling in:
It looks like we only need 1 significant digit here but I'll give you 2 and you can round how you want.
KE = 2.4 × 10⁵ J
The work done on the boxes and the energy spent is 700J while the power required to lift 4 boxes per minute is 2.8kW
This work done on an object is the force required to move that object from point A to point B.
Data Given;
- Weight (mg) = 200N
- Distance (s) = 3.5m
This is the work done to move the boxes from point A to point B.
The work done to move the object is 700J
<h3>Energy</h3>This is used to calculated the energy used to carry the work done and the formula is given as
The energy transferred when he lifts one box is 700J
<h3>Power</h3>Power is the rate at which energy is used with respect to time
The energy required to lift 4 boxes in one minutes is
Now we can calculate the power used
The power required to move four boxes in 1 minutes is 2.8kW
From the calculations above, the following was gotten
- work done = 700J
- Energy = 700J
- Power = 2800W or 2.8kW
Learn more on work done, energy and power here;