The amplitude of a sound wave is directly related to the loudness of the sound.
Answer:
s = 3 m
Explanation:
Let t be the time the accelerating car starts.
Let's assume the vehicles are point masses so that "passing" takes no time.
the position of the constant velocity and accelerating vehicles are
s = vt = 40(t + 2) cm
s = ½at² = ½(20)(t)² cm
they pass when their distance is the same
½(20)(t)² = 40(t + 2)
10t² = 40t + 80
0 = 10t² - 40t - 80
0 = t² - 4t - 8
t = (4±√(4² - 4(1)(-8))) / 2(1)
t = (4± 6.928) / 2 ignore the negative time as it has not occurred yet.
t = 5.464 s
s = 40(5.464 + 2) = 298.564 cm
300 cm when rounded to the single significant digit of the question numerals.
<u>We are given:</u>
Power of the motor(P)= 95 W
Weight of the object (F)= 120 N
time taken (t)= 6.2 s
Distance covered by the object (s) = s m
<u>Solving for the distance covered:</u>
We are given that the power of the motor = 95 W
we know that <em>power = Work done / Time taken</em>
So, <em>Power = Force * displacement / Time taken </em><em> [Work done = Force * displacement]</em>
replacing the variables
95 = (120 * s) / 6.2
s = 95*6.2 / 120
s = 4.9 m
Answer:
aw why? are you deleting the app for school?