Answer:
what grade are you in? um............
Answer:
Political arguements and public satements are being announced on all kinds of socail media. Like Twitter, people all over the world are using the internet to buy basic needs.
Explanation:
May you please show a picture
By using a woodstove, the kilograms of wood required to
heat a room to 20°C is 3 kg
<h3>Efficiency of a machine</h3>
- Efficiency is the percent of work put into a machine (input work) to that of the work done by the machine (output work).
- Efficiency of a machine is always less than 100% because the output work is always less than the input work because some of the input work is used to overcome friction.
Efficiency = work output/work input * 100%
Efficiency of fireplaces = 15%
Amount of food required to heat a room to 20°C = 15 kg
Assuming efficiency of 100%, amount of wood required will be X kg:
X = 15% * 15 kg
X = 2.25 Kg
By switching to woodstoves which are 75% efficient, amount of wood required will be Y kg:
Y = 2.25 kg / 75%
Y = 3 kg
Therefore, by using a woodstove, the kilograms of wood required to
heat a room to 20°C is 3 kg
Learn more about efficiency of machines at: brainly.com/question/3617034
<span>Hey there!
When looking up at the clouds, you can usually make out different shapes and figures with _____.
</span>
The answer that best fits in the blank is: cumulus clouds
They are known to be puffy and look similar to pieces of floating cotton.
Thank you!
