Answer:
Velocity=1.1m/s
Amplitude=0.35m
Explanation:
Given:
time 't' = 2.9s
wavelength 'λ'= 5.5m
distance 'd'=0.7m
The time period 't' is the time b/w two successive waves. Therefore, the time it takes from the boat to travel from its highest point to its lowest is a half period.
So, T = 2 x 2.9 => 5.8 s
As we know that frequency is the reciprocal of time period, we have
f= 1/T = 1/5.8 =>0.2 Hz
In order to find how fast are the waves traveling, the velocity is given by
Velocity = f λ
V= 0.2 x 5.5 =>1.1m/s
The distance between the boat's highest point to its lowest point is double the amplitude.
Therefore , we can write
Amplitude 'A'= d/2 =>0.7/2 =>0.35m
The greater the mass is then it will be greater the inertia or it could be the other way around. <span />
Momentum = mass (kg) * velocity (m/s)
<span>Total mass = mass of bike + mass of Rita = 7 + 42 = 49 Kg </span>
<span>Momentum = 49 * 15 = 735 = 7.35 * 10^2 = 7.4 * 10^2 to one decimal place
Final answer is </span><span>7.4 × 102 kilogram m/s</span>
Sunspots occur at two times in the solar cycle corresponding to the "NS" orientation of magnetic poles for a 1/2 cycle and an "SN" orientation for the other half.