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Margaret [11]
3 years ago
15

Please help!

Physics
1 answer:
Alik [6]3 years ago
3 0

Answer:

B

Explanation:

Find the acceleration of the system

m2>m1

further m2 = 2m

and m1 = m

The acceleration is going to be the downward force created by m2 divided by the total mass (m2 + m2)

a = (m2*g - m1*g) / (m1 + m2)

a = (2m - m)*g/ (2m + m)

a = m * g/3m

a = 1/3 * g

Formula for time

Givens

distance := d

acceleration : = a  

vi = 0

Kinematic Formula

d = vi * t + 1/2 a t^2

Solution

d = 0 + 1/2 * 1/3 g  * t^2

6d = g * t^2

t^2 = 6d/g

t = √(6d/g)

Answer.

B

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Answer:

87.1 mph

Explanation:

We are given that

Mass,m=60 kg

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Coefficient of rolling resistance,\mu_r=0.007

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Where g=9.8 m/s^2

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7 0
4 years ago
White light is spread out into its spectral components by a diffraction grating. If the grating has 1,970 grooves per centimeter
OlgaM077 [116]

Answer;

7.238°

Explanation

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Where λ= wavelength=640 nm

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Sin(x)= mλ/d

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Therefore,the angle (in degrees) that the red light of wavelength 640 nm appear in first order is 7.238°

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scoundrel [369]

Answer: Have A Blessed Day!

Explanation:

Thanks for the information mate!

(Also can I have brainliest i'm so close to next rank! Thanks and have a good life!)

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