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zmey [24]
3 years ago
6

I don't get this question could someone help out

Physics
1 answer:
ratelena [41]3 years ago
8 0

Answer:

that would probably be Rock A is harder than Rock B

Explanation:

Because if Rock A can scratch Rock B then it obviously means that Rock A is harder.

Right?

Hope This Helps You Out♡

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A 20 kg mass is moving at 10 m/s and collides with a stationary 5 kg mass, transferring all its momentum in the collision, what
Fudgin [204]

Answer:

v = 40 [m/s].

Explanation:

Linear momentum is defined as the product of mass by Velocity. In this way, by means of the following equation, we can calculate the momentum.

P=m*v\\

where:

m = mass [kg]

v = velocity [m/s]

P =20*10\\P =200 [kg*m/s]

Since all momentum is transferred, we can say that this momentum is equal for the mass of 5 [kg]. In this way, we can determine the speed after the impact.

v = P/m\\v = 200/5\\v = 40 [m/s]

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3 years ago
In terms of π, what is the length of an arc
frosja888 [35]

Answer:

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S = theta * R = pi / 6 * 3 cm = 1.57 cm

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3 years ago
Sound is an example of ?
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8 0
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Nesterboy [21]

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Aneli [31]

Answer:

c

Explanation:

cuz its informing the length of 5 and weight on 20N

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