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madam [21]
3 years ago
10

Jonathan has six strings that are the same thickness and are all the same material. He cuts the strings to different lengths and

pulls so that they all have the same tightness. Which string will have the highest pitch when he plucks it with his finger?
Physics
2 answers:
harkovskaia [24]3 years ago
7 0
The shortest string will have the highest pitch.

tamaranim1 [39]3 years ago
4 0

Your answer is C.

The shortest string will have the highest pitch. This is because the pitch of a sound depends on the speed of its vibrations.

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A sled drops 50 meters in height on a hill. The mass of the rider and sled is 70 kg and the sled is going 10 m/s at the bottom o
navik [9.2K]

Answer:

Efficiency = 10.2 %

Explanation:

Given the following data;

Mass = 70 kg

Height = 50 m

Velocity = 10 m/s

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To find the efficiency of energy conversion from potential to kinetic;

First of all, we would determine the potential energy;

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P.E = 34300 J

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K.E = ½mv²

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Therefore, Input energy, I = 34300 J

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4 0
2 years ago
Which has a total mass of 1612 kg. If she accelerates from rest to a speed of 12.87 m/s in 3.47 s, what is the minimum power req
blondinia [14]

Answer:

76969.29 W

Explanation:

Applying,

P = F×v............. Equation 1

Where P = Power, F = force, v = velocity

But,

F = ma.......... Equation 2

Where m = mass, a = acceleration

Also,

a = (v-u)/t......... Equation 3

Given: u = 0 m/s ( from rest), v = 12.87 m/s, t = 3.47 s

Substitute these values into equation 3

a = (12.87-0)/3.47

a = 3.71 m/s²

Also Given: m = 1612 kg

Substitute into equation 2

F = 1612(3.71)

F = 5980.52 N.

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Substitute into equation 1

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mote1985 [20]

Answer:

compound A

Explanation:

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