Given:
Total distance = 1000 kilometer
Total time = 5 hours
To find:
Average speed = ?
Formula used:
=
Where = average speed
s = total distance
t = total time
Solution:
Average speed of the jet is given by,
=
Where = average speed
s = total distance
t = total time
=
= 200 km/ h
Thus, average speed of the jet is 200 km/h.
Hence, Option (A) is correct.
There are no appropriate units for power on the list you provided
Answer:
Explanation:
At room temperature the thickness of the film is just enough that it will cancel the reflected light
So here we will have
so we have
here we have
now we have
now when temperature is increased to 177 degree C
then in this case we have
now we have
now we know by the formula of thermal expansion
If the friction and air resistance was 75N and Elaine was traveling with a force of 75N the forces would cancel out. Elaine's bike would not be moving and all the forces would be balanced