Answer:
Electromagnetic waves are waves that have no medium to travel whereas mechanical waves need a medium for its transmission. Electromagnetic waves travel in a vacuum whereas mechanical waves do not. The mechanical waves need a medium like water, air, or anything for it to travel.
Explanation:
Answer:
4.408 m/s, 4.102 m/s, 4.026 m/s
Explanation:
The question is incomplete. The text of the original question states:
A race car moves such that its position fits the relationship
:
where x is measured in meters and t in seconds. Determine the instantaneous velocity of the car at t = 4.7 s, using time intervals of 0.40 s, 0.20 s, and 0.10 s.
We can find the instantanoues velocity of the car at any time t by calculating the derivative of the position, so we find:
And now we just need to substitute t=0.40 s, 0.20 s, and 0.10 s to find the corresponding instantaneous velocity:
<u>Answer:</u> The focal length of makeup mirror is 0.3448 m.
<u>Explanation:</u>
We are given:
m = 1.5
u = -11.5 cm
To calculate the image distance, we the equation for mirror:
Putting values in above equation, we get:
To calculate the focal length of mirror, we use the mirror formula, which is:
Putting values in above equation, we get:
Negative sign represents the position of focal length.
Converting the focal length into meters, we use the conversion factor:
1 m = 100 cm
So, 34.48 cm = 0.3448 m
Hence, the focal length of makeup mirror is 0.3448 m.
The amplitude is the height of the waves so wave c is largest and wave d is smallest
NO ir helps the hair grow