Answer: 60mph
Explanation:
Given the following :
First leg travel:
Distance = 30 miles
Time of travel= 30 minutes = 0.5 hour
Second leg travel:
Distance = 60 miles
Time of travel = one hour
Average speed :
Speed = total Distance / time of travel
Total distance in miles = (30 + 60) miles = 90 miles
Total time of travel = 1 hour + 0.5 hour = 1.5 hours
Average speed = total distance traveled / total travel time
Average speed = 90 miles / 1.5 hours
Average speed = 60 miles / hour
= 60mph
A conservative force is a force that when work is done against this force the work done does not depend on the path taken only the initial and final position.
D. Destructive interference. An easy way to think about it is the waves are opposite each other, so they essentially cancel each other out, or make an effort to.
Hey there!
<span>because it slows down, which causes it to bend is the reason why light refracts when it encounters the glass in the lens
Hope this helps!</span>
High frequency for the range of radio frequency electronmagnetic waves between 3 and 30 megahertz (MHz)