The formula for speed is:
Speed = Distance/Time
We can plug in the given values into the above equation:
Speed = 570m÷24s
Speed = 23.75, which rounds to 24m/s as a whole number. Therefore, the answer is b.
Answer:
idk what the answer plz help!!!
Explanation:
Answer:
Total heat transfer rate is combined convection and radiation transfer rate, multiplied with absorptivity factor. From that equation you can find temperature of the roof using iteration method.
Explanation:
<u>Known:</u>
steel sheet roof emissivity ∈ = 0.13
steel sheet roof absorptivity
_s = 0.65
air temperature T∞ = 16°C ...= 289K
heat transfer rate
= 750 W/m2
natural convection h = 7W/m2K
Total heat transfer rate is combined heat transfer rate of convection and radiation, multiplied with absorptivity factor:

=
T∞-
)+∈σA(

-
T∞)-∈σ(
=0
2562-7
-7.371*10^-9=0
Use iteration method to solve for 
=350.17 K...=77.17°C
In this particular situation, cat would not be comfortable with walking on a roof since its surface temperature is 77.17°C which may even cause burns to its paws.
Answer:
atmosphere
Explanation:
majority of nitrogen found in atmosphere,it's about 78% and present in form of gas
Answer:C
Explanation: This is because the time for the 26 gram ball was around 6 seconds longer which if they were dropped at the same height then the ball with more mass would fall faster because of its gravitational pull.