Answer:
Explanation:
Average speed is given by
Total distance/ total time taken
So we need to know the distance in the first travel
Then
First part
Speed=60miles/hour
Time 3hours
Distance = speed × time
Distance = 60×3
Distance = 180 miles
Second part
Speed 45mile/hour
And time is 2hours
Distance = speed × time
Distance = 45× 2
Distance = 90miles
So total distance travelled for both cases is 90+180=270miles
And total time is 5hours
Then,
Average speed = total distance/total time
A.S=270/5
A.S= 54miles/hour
Answer:
Average current produced by the repeated transfer of charge is 5.6 × 10⁻⁷ ampere
Explanation:
The formula to be used here is
Q = It
where Q is the quantity of electricity and it is measured coulombs (C); 2.8 × 10⁻⁸ C or 0.000000028 C
I is current and it is measured in ampere (amps or A); unknown
t is time and it is measured in seconds (s); 0.05 s
Since, average current is what is unknown
I =Q/t
I = 0.000000028/0.05
I = 5.6 × 10⁻⁷ A
Average current produced by the repeated transfer of charge is 5.6 × 10⁻⁷ ampere
Answer:
last option
Explanation:
photovoltaic cell is when the sun's energy will be converted to as electricity causing an effect to create light for houses
The answer to your question is: the lungs.
The lungs allow the respiratory system to take in oxygen.
(Hope this helps!)
