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>
Because it is how fast it goes and it depends on the speed
The kinetic energy of flywheel of a stationary engine is 120J.
<u>Explanation:</u>
Key Terms:
- torque: A rotational or twisting effect of a force; (SI unit newton-meter or N m; imperial unit foot-pound or ft-lb)
- inertia: The property of a body that resists any change to its uniform motion; equivalent to its mass.
- angular velocity: A vector quantity describing an object in circular motion; its magnitude is equal to the speed of the particle and the direction is perpendicular to the plane of its circular motion.
Here , angular acceleration = 2
Angular velocity w = Angular acceleration × time
∵ Acceleration is 2 rad per second sq. So , time is 1 sec.
⇒ Angular velocity (w) =
⇒ Angular velocity (w) =
Now, kinetic energy ⇒
⇒
⇒
⇒
∴ The kinetic energy of flywheel of a stationary engine is 120J.
Answer: representative sample
Explanation:
A representative sample can be defined as a subset of the population. This sample includes subgroups that reflect the features of the larger group and are chosen for a specific purpose of study. For example, a classroom with 60 students having 30 females and 30 males, can generate a representative sample based on the gender differences.
If you count Pluto, then Pluto. But if you dont, then its Neptune. This is because of the gravitational pull of the sun. Neptune/Pluto is the farthest so it has the least affect from the gravitational pull.