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Sveta_85 [38]
3 years ago
12

What force was required to accelerate a 20 kg object at a rate of 3 m/s/s? Please help ASAP

Physics
2 answers:
valina [46]3 years ago
6 0

We know that,

F = ma

  • Where f is force,m is mass & a is acceleration.

From ques. we have;

  • mass = 20 kg
  • Acceleration = 3 m/s²

So,

F = 20 × 3

F = 60 N

hjlf3 years ago
3 0

Answer:

Explanation:

This is a simple F = ma problem. I'm assuming because of the representation of the numbers that you are not that into sig figs in class, so I will ignore them, against my better (physics teacher) judgment:

F = (20)(3) so

F = 60 N

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Two identical traveling waves, moving in the same direction, are out of phase by π/5.0 rad. What is the amplitude of the resulta
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Answer:

Therefore the amplitude of the resultant wave is =0.95 y_m

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y₁=A sin (kx-ωt) = y_{m}sin (kx-ωt)

For wave 2:

y₂=A sin (kx-ωt+Φ) = y_{m}sin (kx-ωt+Φ)

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=y_m\ cos(\frac{\phi }2)

=y_m\ cos(\frac{\pi }{10})

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