Explanation:
true because one can't see their behavior
Answer:
- large-scale investment in hydrogen car infrastructure
- increased funding for research and development into advancing hydrogen car technology
Explanation:
If test markets show that hydrogen cars can be successful, the market will try to take advantage of that and that would include investing heavily into the production of hydrogen cars.
There will also be an increase in the funding for research in hydrogen cars because investors would like to find a way to have an edge over competitors seeing as hydrogen cars are about to increase in production.
It reinforces the idea that all men should fight against death
B be age ok mom is she is the king and she is going
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
