Transparent - Diamond, water, air, prism, cellophane sheet, frosted glass, glasses, clear tape, non colored plastic, lenses
Translucent - Butter paper, parchent paper, plastics, clouds, thin fabrics, colored plastics, tinted glass
Opaque - Computer, phone, book, box, file, stone, can, paper cup, cupboard (wood/steel)
Answer:
if you doing it on a computer i recommend to do it better on your phone and download the app, I should let you create one.
Explanation:
Answer:
From certain assumptions that the walking speed is 2 m/s, and the stop time is 0.1 s the acceleration would be -20 m/s
Explanation:
Using the average acceleration formula:
where 
and 
are the changes in the speed and time respectively.
We have by assuming that the walking speed is 2 m/s and the stop time is 0.1s which is equal to the change in time during the stopping.
, where 
are the initial speed and final speed respectively, and 
Plugging the previous in the average acceleration formula we get
where the minus sign indicates an acceleration in the opposite direction of the motion (or in other word opposite to the speed's direction).
The energy required to heat a substance is related by the formula:
Q = mCpΔT ; where Q is the energy, m is the mass of the substance, Cp is the specific heat capacity and ΔT is the change in temperature.
2000 = (4)(Cp)(5)
Cp = 100 Joules / g °C
I might have did mistake with calculations but this is how you should do.
