The correct answer would be A) the lenses of the eye change the size of images
Answer:
6.25 mph
Explanation:
You would divide 25 by 4 to get the average miles per hour.
Power is the rate work done given by dividing work done by unit time. It is measured in watts equivalent to J/s.
In this case the force by the student is mg = 490 N (taking g as 9.8m/s²)
Work done is given by force × distance,
Therefore, Power =(force × distance)/ time, but velocity/speed =distance/time
Thus, Power = force × speed/velocity
= 490 N × 1.25
= 612.5 J/S (Watts)
Hence, power will be 612.5 Watts.
Answer: it’s in the picture
Explanation: look at the picture
