An electric heater works by passing a current of 100 A through a coiled metal wire, making it red hot. If the resistance of the
1 answer:
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Answer: 25.38 m/s
Explanation:
We have a straight line where the car travels a total distance , which is divided into two segments
:
(1)
Where
On the other hand, we know speed is defined as:
(2)
Where is the time, which can be isolated from (2):
(3)
Now, for the first segment the car has a speed
, using equation (3):
(4)
(5)
(6) This is the time it takes to travel the first segment
For the second segment the car has a speed
, hence:
(7)
(8)
(9) This is the time it takes to travel the secons segment
Having these values we can calculate the car's average speed :
(10)
(11)
Finally:
Answer:
Here is my answer
Explanation:
Answer:
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This is a picture that helped me learn the phases in an easy way. I hope it helps you too.
Explanation:
