Let's see if I can answer this:
1. Materials used in manufacture are in some instances toxic, causing disposal problems.
2. Creation of a solar pain requires a fair amount of "energy". It may take a long while for the solar collector to "repay" that initial energy expenditure.
3. Solar panels don't work at night. Also, solar panels don't work well on cloudy days.
4. Solar panels are somewhat delicate, so repair costs need to be factored into the equation.
5. Solar panels work best at low latitudes and are increasingly less effective at higher latitudes.
negative 0.0016
It is equivalent to 1 over 5 to the power of 5, or 1 over 3125.
Negative 5 to the second power would be -5 times -5 which would be 25.
It is -1/5
Seven to the negative 5th power is 0.00005949901
Five to the negative third power = 0.008
If you mean 5 to the power of -1 then it is 1/5
That is the definition of negative powers.
5 over 8 to the negative 2nd power equals 2.56
It is: 25
Five to the negative 7th power equals 0.0000128
Negative 3 raised to the power of 5 is equal to -243.