Answer:
Explanation:
Given that,
The blade of a windshield wiper moves through an angle of 90.0° in 0.397 s
The radius of the circlular path is 0.376 m
We need to find the magnitude of the centripetal acceleration of the tip of the blade. Let it is a. The formula of the centripetal acceleration is given by :
v is velocity,
It moves through an angle of 90 degrees, it means
So,
So, the magnitude of the centripetal acceleration of the tip of the blade is .
Oml i literally answered this in class today XD it was C
Answer:
The answer to your question is the letter D. 2.5 N
Explanation:
The electrostatic force is the same in both directions,
If the electrostatic force on B due to A is 2.5 N, the magnitude of the electrostatic force on A due to B must be 2.5N.
Maybe the direction is different but the magnitude is the same.
Answer: #4
Sally is faster.
Explanation:
If you multiply Sallies it is going to be less than Jessica's.