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dedylja [7]
3 years ago
13

How would you use the index of refraction of salt water to find the concentration of a salt solution?

Physics
1 answer:
zubka84 [21]3 years ago
3 0
As the salt solution increases its salinity, its refractive index also increases, with decreasing temperature. Through this relationship, the refractive index of salt solution at a constant temperature can be used to determine the concentration of the said solution.
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Nanotechnology is proving ineffective at helping clean up PCB’s. True orFalse
tester [92]
False, <span>Nanotechnology is proving effective at helping clean up PCB’s.</span>
8 0
3 years ago
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A frictionless pendulum is made with a bob of mass 19.7 kg. The bob is held at height = 0.934 meter above the bottom of its traj
Alika [10]

Answer:

265 J

Explanation:

Energy=PE+KE=mgh+ 0.5mv^{2} where KE is kinetic energy, PE is potential energy, m is the mass of an object, v is the speed, h is the height and g is acceleration due to gravity.

Substituting 19.7 Kg for mass, 0.934 for h, 2.93 for v and 9.81 for g then

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3 years ago
A 5.0 kg wooden block is in free fall at 10 m/s. What is the Kinetic Energy for the wooden block?
andre [41]

Answer:

250 J

Explanation:

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K = 1/2.m.v²

K = 1/2.5.10²

K = 1/2.5.100

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But, remember that if the speed is accelerating or not, if it is, then we need to know the point in time that the question is asking for the Kinetic Energy.

In this case, I think it is just a constant speed.

4 0
3 years ago
A simple dipole consists of two charges with the same magnitude, q, but opposite sign separated by a distance d. The EDM (electr
DedPeter [7]

Answer:

a. dW = ∫pEsinθdθ  b. W = p.E

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a. We know torque τ = p × E = pEsinθ where θ is the angle between p and E

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= ∫₉₀⁰pEsinθdθ

= pE∫₉₀⁰sinθdθ

= pE(cosθ - cos90)

=pEcosθ

= p.E

8 0
3 years ago
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Average speed = (distance traveled) / (time to cover the distance)

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