Answer:
A stop watch measures time and the number of seconds making an osculation is the period T
Which is T = 2π√(L/g)........solving for L (the length of the pendulum),
Then the L = T²x g/( 4πr²) substitute and then u find length or height of the swing
When the magnitude of all opposing forces is equal, then the force is called balanced. The forces on W and Y are balanced while the forces on X and Z are unbalanced.
<h2>
Net Force:</h2>
It is defined as the vector sum of all forces acting on the object. The forces with the same magnitude in the opposite direction cancel each other.
<h3>Balanced force: </h3>
When the magnitude of all opposing forces is equal, then the force is called balanced.
<h3>Unbalanced force: </h3>
When a force is more than the opposing force, the force is called unbalanced.
Therefore, the forces on W and Y are balanced while the forces on X and Z are unbalanced.
Learn more about Net Force:
brainly.com/question/14361879
Explanation :
As the ambulance got closer, Marge noticed that the pitch of the siren got higher. This is due to the Doppler's effect.
The siren of the ambulance has a higher pitch when it approaches Marge. When the waves move away from him, it will have a lower pitch.
As the waves come closer to us, the waves become compressed and hence the frequency of the wave increases.
Answer:
Explanation:
from t = .3 to t = .33 , velocity appears to be uniform .
uniform velocity = .22 m /s
displacement will be area of the v-t graph which is a rectangle .
= .22 x ( .33 - .3 )
= .22 x .03
= 66 x 10⁻⁴ m
= 6.6 mm .
