Answer:
The answer is 4.55 m/s!
Explanation:
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When a pendulum is not in the center of gravity in equailrbliaum there is mechanical energy, potential energy is if a rock is cut from the string it will fall
Answer: This is called the Doppler effect, where waves shift frequency and wavelength as the source travels towards you (higher frequency, shorter wavelength) or away from you (lower frequency, longer wavelength)
Explanation:
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Answer:
<em>The signal x[n] = 16000 samples</em>
Explanation:
From the question,
S = x/t ................................... Equation 1
making x the subject of the equation
x = St .................................. Equation 2
Where S = sample rate ( samples per seconds), x = signal (samples), t = time ( seconds)
<em>Given: S = 8000 samples, t = 2 seconds.</em>
<em>Substituting these values into equation Equation 2</em>
<em>x = 8000×2</em>
<em>x = 16000 samples.</em>
<em>Thus the signal x[n] = 16000 samples</em>
Answer:
No, if the acceleration is different from zero the body must move
Explanation:
The movement of a body is determined by Newton's second law
∑ F = m a
Where the sum of forces is direct proportional to the acceleration, if the acceleration is different from zero the body at a certain point will stop, but a moment later it starts a movement in the direction of the acceleration to a when it is small
The only way to avoid that there is a friction force is to make the sum of forces zero and consequently the acceleration will also be zero.