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Makovka662 [10]
4 years ago
7

In the seventeenth century, Robert Hooke conducted many experiments with springs. In all the data he recorded, he found that the

force needed to push down on a spring or stretch it out from its usual resting point was equal to the spring’s stiffness multiplied by the distance it is pushed or pulled from its resting point. He wrote the equation F = kX, in which F is the force, k is the spring’s stiffness, and X is the distance the end of the spring moves from its usual resting point when no push or pull is applied. The equation is still used today.
Which best describes Hooke’s equation?

A) It is a law, because it explains why a force must be applied to push or pull a spring.

B) It is a law, because it states how force relates to a spring but does not explain why.

C)It is a theory, because it explains why a force must be applied to push or pull a spring.
 
D)It is a theory, because it states how force relates to a spring but does not explain why.
Physics
2 answers:
Gnoma [55]4 years ago
7 0

Answer:

B) It is a law, because it states how force relates to a spring but does not explain why.

Explanation:

As we know that Law is defined as the hypothesis which is experimentally verified. This law is converted into theory if we can prove it mathematically with a given theory.

So here we know that in spring force calculation we obtained a relation that if spring is compressed or expanded by some distance "x" then the spring force on it will be proportional to that distance.

Since there is only experimental verification is available for this hypothesis so it must be defined as law.

so here correct answer will be

B) It is a law, because it states how force relates to a spring but does not explain why.

IgorLugansk [536]4 years ago
4 0
B.
The explanation of the relationship between load and extension is not in Hooke's Law.
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Why are New Hampshire students required to learn about earths systems
VashaNatasha [74]

Answer:

Explanation:

Why are students in Hawaii required to learn the history of debate surrounding the writing of the first 10 amendments to the constitution? They were not a member of the United States at the time?

The reason they have to learn anything they can about the constitution is because they are governed by it (just as you are).

The reason you have to learn about the Earth's Systems is because currently there is a huge debate about global warming. The problem is that we are not sure what the solution might be and we've already spent billions on reducing our effect on the environment. Billions means your tax dollars (many) or that of your parents. Many scientists are not sure we should be doing anything.

You will enter the work force one day and if you get a good job, you will be taxed. You should never be unaware of what your tax dollars are spent on.

6 0
3 years ago
A 55.0 kg bungee jumper steps off a bridge with a light bungee cord tied to her and to the bridge. The unstretched length of the
lianna [129]

Answer:

69.06\ \text{N/m}

Explanation:

m = Mass of bungee jumper = 55 kg

g = Acceleration due to gravity = 9.81\ \text{m/s}^2

h = Height at the bottom = 40 m

k = Spring constant

x = Displacement of bungee cord = 25 m

Applying the principle of conservation of energy to the system we have

mgh=\dfrac{1}{2}kx^2\\\Rightarrow k=\dfrac{2mgh}{x^2}\\\Rightarrow k=\dfrac{2\times 55\times 9.81\times 40}{25^2}\\\Rightarrow k=69.06\ \text{N/m}

The spring constant of the bungee cord is 69.06\ \text{N/m}.

5 0
3 years ago
A novice pilot sets a plane’s controls, thinking the plane will fly at 2.50 × 102 km/h to the north. if the wind blows at 75 km/
serg [7]

Velocity of plane is given as

v_1 = 2.50 * 10^2 km/h towards north

v_2 = 75 km/h towards south east

we can write the two velocity in vector form

v_1 = 2.50 * 10^2 \hat j

v_2 = 75 cos45 \hat i - 75 sin45 \hat j

now the net velocity will be given as

v_{net} = v_1 + v_2

v_{net} = 250\hat j + 53.03 \hat i - 53.03 \hat j

v_{net} = 53.03\hat i + 196.97 \hat j

so the resultant velocity will be given as

v_{net} = \sqrt{53.03^2 + 196.97^2}

v_{net} = 203.98 m/s

and the angle of velocity will be

\theta = tan^{-1}\frac{v_y}{v_x}

\theta = tan^{-1}\frac{196.97}{53.03} = 74.9 degree

3 0
4 years ago
An archer pull back the string of a release an arrow at at a target. Which kind of potential energy is transformed to cause the
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The type of potential energy is elastic energy
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3 years ago
TECHNOLOGY A Lamborghini Aventador accelerates from rest to 100 km / h in 2.9 s. The mass of the car is 1575 kg Calculate the po
DerKrebs [107]

At 100 km/hr, the car's kinetic energy is

KE = (1/2) (mass) (speed)²

KE = (1/2) (1575 kg) ( [100 km/hr] x [1000 m/km] x [1 hr/3600 sec] )²

KE = (787.5 kg) (27.78 m/s)²

KE = 607,639 Joules

In order to deliver this energy in 2.9 seconds, the engine must supply

(607,639 J / 2.9 sec) = 209,531 watts

<em>Power = 281 HP</em>

6 0
3 years ago
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