Period = (1) / (frequency)
Period = (1) / (200 per second) = 0.005 second = 5 milliseconds
Your answer is C) The speed of sound is higher in solids than in liquids.
No,because a Kevin is 7.242971666663E+22 times Smaller than a Joule.
Answer:

Explanation:
From the free-body diagram for the car, we have that the normal force has a vertical component and a horizontal component, and this component act as the centripetal force on the car:

Solving N from (2) and replacing in (1):

The centripetal acceleration is given by:

Replacing and solving for v:

Answer:
The change in current at
is 
Explanation:
From the question we are told that
The resistance is 
The current is 
The change in voltage with respect to time is 
The change in resistance with time is 
According to ohm's law

differentiating with respect to time using chain rule

substituting value at R = 456

