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sdas [7]
2 years ago
7

The “rainbow” surface of a CD or DVD is the result of a transmission grating.

Physics
1 answer:
Gelneren [198K]2 years ago
6 0

Answer:

I believe a CD or DVD rainbow is actually reflection grating, but...

So I believe this is false.

Though it is possible to make it transmissive.

Explanation:

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The waves used by a microwave oven to cook food have a frequency of 2.45 gigahertz calculate the wavelength of this type of wave
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Electromagnetic wave bc I studied that early in the year
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Newton's Law of inertia is sufficient to cause a planet to orbit the sun.<br> O True<br> O False
mario62 [17]
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7 0
3 years ago
When you park your car uphill next to a curb, the right front wheel should be:?
Cloud [144]
<span> When headed uphill at a </span>curb<span>, turn the front </span>wheels<span> away from the </span>curb<span> and let </span>your vehicle<span> roll backwards slowly until the rear part of the front </span>wheel<span> rests against the </span>curb<span> using it as a block.</span>
6 0
2 years ago
On a touchdown attempt, 95.00 kg running back runs toward the end zone at 3.750 m/s. A 113.0 kg line-backer moving at 5.380 m/s
dsp73

Answer:

(a) 1.21 m/s

(b) 2303.33 J, 152.27 J

Explanation:

m1 = 95 kg, u1 = - 3.750 m/s, m2 = 113 kg, u2 = 5.38 m/s

(a) Let their velocity after striking is v.

By use of conservation of momentum

Momentum before collision = momentum after collision

m1 x u1 + m2 x u2 = (m1 + m2) x v

- 95 x 3.75 + 113 x 5.38 = (95 + 113) x v

v = ( - 356.25 + 607.94) / 208 = 1.21 m /s

(b) Kinetic energy before collision = 1/2 m1 x u1^2 + 1/2 m2 x u2^2

                                               = 0.5 ( 95 x 3.750 x 3.750 + 113 x 5.38 x 5.38)

                                               = 0.5 (1335.94 + 3270.7) = 2303.33 J

Kinetic energy after collision = 1/2 (m1 + m2) v^2                

                                                = 0.5 (95 + 113) x 1.21 x 1.21 = 152.27 J

4 0
3 years ago
A ball is falling from the sky down to the left. What two forces are being used?
suter [353]

Answer:

push and pull

Explanation:

i beleve good luck❤️❤️

4 0
2 years ago
Read 2 more answers
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