Answer:
It comes from the word "moon" and it is because it takes a full moon cycle around the earth to complete a month, around 30 days
I believe the correct answer from the choices listed above is option D. The amplitude, period, and frequency of the motion of the mass are given by <span>amplitude = 3, period = , and frequency = 2. The standard form of this model would be as follows:
y = A sin Bx
where A is the amplitude and 2pi/B is the period. Frequency is the reciprocal of the period. Hope this answers the question. Have a nice day.</span>
Answer:
t = 2.38 [s]
Explanation:
To solve this problem we must use the following equation of kinematics. We must clarify that both the acceleration and the initial velocity were taken as positive, since the velocity of the movement coincides with the direction of the acceleration.
where:
x - Xo = distance = 47 [m]
Vo = initial velocity = 8 [m/s]
a = gravity acceleration = 9.81 [m/s²]
t = time [s]
Now replacing these values in the equation:
47 = 8*t + 0.5*9.81*t²
47 = 8t + 4.905t²
47 = 4.905*t(1.63 + t)
9.58 = t*(1.63 + t) solving this equation (cuadratic)
we found that t = 2.38 [s]
The resultant velocity is 360.81 m/s and the velocity of the dolphin swims is 11 m/s
Explanation:
The boat travelling is 13.4 m/s
The captain walks on the deck is 1.3 m/s
The resultant velocity = a² + b² = c²
= 13.4² + 1.3²
= 179.56 + 1.69
c² =
c= 360.81 m/s
To find the velocity, the dolphin swims in 55 m and the acceleration is 5.0 s
velocity = distance / acceleration
=
= 11 m/s
Therefore, the velocity is 11 m/s.