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defon
2 years ago
9

Hello boys and girls plz help me with this question ASAP Thank you so much

Physics
1 answer:
Alex17521 [72]2 years ago
6 0

Answer:

Blue

Explanation:

The colors of the rainbow are known by the acronym; ROYGBIV.

This is;

Red, Orange, Yellow, Green, Blue, Indigo, and Violet.

From research, their respective wavelengths on the average are;

Red: 665 nm

Orange; 630 nm

Yellow; 600 nm

Green; 550 nm

Blue; 470 nm

Indigo; from 445nm to 464 nm

Violet; less than 400 nm

This means that from Red to Violet in that order, wavelength is decreasing in a descending order.

Now in refraction, the light with shortest wavelength will be bent the most while that with longest wavelength will be bent the least.

Thus, violet bends the most.

However, violet is not included in the options. So the next one that will bend the most after violet among the options given is Blue.

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frez [133]

Answer:

39000\ \text{kg m/s}

West

Explanation:

m = Mass of car = 1.3\times 10^{3}\ \text{kg}

t = Time = 9 seconds

u = Initial velocity = 30 m/s

v = Final velocity = 0

Impulse is given by

J=m(v-u)\\\Rightarrow J=1.3\times 10^3(0-30)\\\Rightarrow J=-39000\ \text{kg m/s}

The magnitude of the total impulse applied to the car to bring it to rest is 39000\ \text{kg m/s}.

The direction is towards west as the sign is negative.

7 0
3 years ago
10.0 ppm 10.4 ppm 10.2 ppm 10.8 ppm 10.1 ppm 10.5 ppm 10.1 ppm Using the new instrument on the first day the technicians got a v
iren [92.7K]

Answer:

The datapoint 9.0 ppm is outlier at the 90% confidence level.

Explanation:

The old data has following values

mean=10.5 mm

standard deviation 0.2 mm

Now the mean of new values is calculated as following

mean=\frac{10+10.4+10.2+10.8+10.1+10.5+10.1}{7}\\mean=10.3 ppm

So the value as 9.0 ppm can be considered easily as outlier in  this regard.

3 0
3 years ago
Starting from rest, how far will a brick fall if it is going 15 m/s and accelerates at a rate of 9.8 m/s2?
masha68 [24]

Answer:

11.48 m

Explanation:

A brick starts from rest and gains a speed of 15 m/s and accelerates at 9.8 m/s^2

u = 0

v= 15

a= 9.8

s= ?

V^2 = U^2 + 2as

15^2 = 0^2 + 2 × 9.8×s

225= 19.6s

s= 225/19.6

s = 11.48m

Hence the brick will fall 11.48 m

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Explanation:

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