Answer:
Explanation:
D)The system is open, and the net external force is nonzero.
Problem recognition is the process the consumer becomes aware of a gap between their existing situation and the desired or ideal situation. This is further explained below.
<h3>What is Problem recognition?</h3>
Generally, Problem identification is the first step of the business buying process, and it occurs when someone within the firm identifies a problem or a need that can be addressed by purchasing a product or a service. This stage may also be referred to as "need recognition."
In conclusion, The process by which a customer becomes aware of a gap between their current position and the scenario that they want or consider to be ideal is known as problem recognition.
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I honestly haven't been in snow but I have of course been in winter.
It is hard for trees to get water in the winter because it hardly rains because the cloud are all covers with white and is cold so it is hard for the clouds to get rain in them and pour it out.
I hope this helped! :D
Exactly 80 liters of 20% are needed.
Let quantity of 20% alcohol solution be added : x liters
Here is the work:
> x*20% + 40 * 50% = (x+40) * 30%
> x*0.2 + 40*0.5 = (x+40)*0.3 ..(converting percentages into decimal)
> 0.2x + 20 = 0.3x + 12
> 20-12 = 0.3x - 0.2x (Rearranging similar terms)
> 8 = 0.1 x
Hence x = 8/0.1
Ans 80 Litres