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Luda [366]
3 years ago
11

Is this right I'm not sure

Physics
2 answers:
Mariulka [41]3 years ago
8 0
Yes it. Is so good job
Lerok [7]3 years ago
7 0

All except #12 are marked correctly. I'd say you've got this subject mastered !

For #12, I think there's a mistake in the sheet. None of the 4 choices is a correct answer to that one.

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3 years ago
Identify the object that has the largest moment from the list of objects given below.
Luda [366]

Answer:

A fired bullet

Explanation:

A fired bullet is faster than the speed of sound

7 0
3 years ago
Calculate the momentum of a 4 kg Bolling ball being thrown at a speed of 3 m/s
bonufazy [111]

We are given –

  • Mass of boiling ball is, m = 4 kg
  • Speed is, v = 3 m/s
  • Momentum, P =?

As we know –

↠Momentum = Mass × Speed(Velocity)

↠Momentum = 4 × 3 kgm/s

↠Momentum = 12 kgm/s

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7 0
2 years ago
1)Atmospheric decreases with the increase with in height?​
lina2011 [118]

Answer:

Explanation:

pressure decreases with increasing altitude. The pressure at any level in the atmosphere may be interpreted as the total weight of the air above a unit area at any elevation. At higher elevations, there are fewer air molecules above a given surface than a similar surface at lower levels.

5 0
3 years ago
A cricket ball is dropped from a height of 20 m. Calculate: a) the speed of the ball. b) the time it takes to fall through this
AysviL [449]

Answer:

Initial velocity is 0 .. ( since it is just dropped)

now using V²= u² +2gh

=> (Vfinal)² = 0+2*10*20

=> v² = 20*20 = 400

=> v = √400 = 20m/s

for time taken

use V = u+gt

=> t = V/g = 20/10 = 2sec

7 0
2 years ago
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