C according to my calculations
Biodegradable when wood rots
like if you leave types of paper and wood or cardboard over time it will break down and enrich the soil.
same things with a compost.
Answer:
D
Explanation:
it could be the yellow cloth but we see are shadow on the sidewalk most of the time and shadows are made from reflecting light so your answer should be D
Answer:
The total amount of heat needed will be
.
Explanation:
We will divide the calculation in two: First, the heat needed to melt the ice, and then the heat needed to warm the resulting liquid from 0°C to 37°C.
![m=183g](https://tex.z-dn.net/?f=m%3D183g)
![l_f=80\frac{cal}{g} =334\frac{J}{g}](https://tex.z-dn.net/?f=l_f%3D80%5Cfrac%7Bcal%7D%7Bg%7D%20%3D334%5Cfrac%7BJ%7D%7Bg%7D)
![l_w=1\frac{cal}{g} =4.184\frac{J}{g}](https://tex.z-dn.net/?f=l_w%3D1%5Cfrac%7Bcal%7D%7Bg%7D%20%3D4.184%5Cfrac%7BJ%7D%7Bg%7D)
<em>i) </em>The fusion heat will be:
![Q_f=l_fm=14640cal=14.640kcal](https://tex.z-dn.net/?f=Q_f%3Dl_fm%3D14640cal%3D14.640kcal)
<em>ii)</em> The heat needed to warm the water from
to
will be:
![Q_w=l_wm(T_f-T_i)=6771cal=6.771kcal](https://tex.z-dn.net/?f=Q_w%3Dl_wm%28T_f-T_i%29%3D6771cal%3D6.771kcal)
So, the total amount needed will be the sum of these two results:
.
AMA is actual mechanical advantage in where it would compare the force in as well as out in using actual measurements in the real life or with friction while in IMA which is the ideal mechanical advantage no friction then is needed. The answer then is a. the value of IMA is larger than AMA.