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IrinaK [193]
3 years ago
5

Jose has a solid green ball. Which color(s) of light does this ball reflect?

Physics
2 answers:
Reil [10]3 years ago
6 0
The ball reflects the green because the ball absorbs all the other colors except green so that's why its the green light is covering it and its absorbing everything else 
lorasvet [3.4K]3 years ago
4 0
If the ball is green, then it is absorbing all the colors of light except green. This means that it is reflecting or denying the absorption of green light, that is why the ball is green. Therefore, your answer would be B.

Hope I helped :)

About 85% sure on this one. 
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During a gust of wind, the blades of the windmill are given an angular acceleration of α=(0.2 θ) rad/s2, where θ is measured in
lord [1]

Answer:

7.5 rad/s

Explanation:

\alpha = angular acceleration = (0.2) θ

Angular acceleration is given as

\alpha =\frac{dw}{dt}

\alpha =\frac{dw}{d\theta }\frac{d\theta }{dt}

\alpha d\theta = w{dw}

(0.2)\theta  d\theta = w{dw}

Integrating both side

(0.2)\int_{0}^{4\pi }\theta  d\theta = \int_{5}^{w}w{dw}

15.8 = \frac{w^{2} - 25}{2}

w = 7.5 rad/s

3 0
3 years ago
What is the biggest current disadvantage to using gas hydrates as a form of energy?
ohaa [14]
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6 0
4 years ago
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A rope 6m long is fixed at one end; the other end is attached to a light string so that it is free to move. The speed of waves o
Mila [183]

Given :

A rope 6m long is fixed at one end, the other end is attached to a light string so that it is free to move.

The speed of waves on the rope is 18 m/s.

To Find :

The frequency of the second harmonic.

Solution :

We know, for second harmonic wave :

Wavelength = Length of rope

\lambda = L\\\\\lambda = 6 \ m

Now, we know frequency is given by :

Frequency = \dfrac{Speed}{Wavelenght}\\\\f = \dfrac{18 \ m/s}{6\ m}\\\\f = 3 \ s^{-1}

Therefore, the frequency of the second harmonic is 3 s⁻¹.

7 0
3 years ago
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zepelin [54]

Answer:

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Explanation:

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4 0
3 years ago
How many orders of magnitude (powers of ten) is the distance to the moon greater than the distance across the Atlantic ocean?
kupik [55]

Answer:

The distance to the moon greater than the distance across the Atlantic ocean by an order of 1.

Explanation:

We have the average distance across the Atlantic ocean, d_i=3700\ mi

the average distance to the moon, d_m=238,900\ mi

The factor by which the distance to moon is greater than the width of Atlantic ocean:

f=\frac{d_m}{d_i}

f=\frac{238,900}{3700}

f=64.57

i.e.

the distance to the moon greater than the distance across the Atlantic ocean by an order of 1.

6 0
3 years ago
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