20. (5 points) An unemployed science teacher decided to make a
house out of 2" (5 cm) pink foam
board. He made the house in the
shape of a box that was 3 meters
long, 2.6 meters wide, and 2 meters
high. How much power will an
electric heater need to keep the
house at 22°C (72°F) if the outside
air temperature is -2°C. You can
assume that the heat loss from
conduction is the main factor. (W)
[kpink foam = 0.03 W/m/°C]

Answerthe energy required is 1.60 × 10⁻¹⁸ j, to three significant figures.explanationwe define electric potential as the ratio electric potential energy to the charge,    then the following gives us the potential difference,      the formula  may be on your formula sheet.the change in electric potential energy would be the energy that would needed to move it from point a to point b. solving for that, we get    using q = 8.00  × 10⁻¹⁹ c and  δv = 2.00 v, we get    the energy required is 1.60 × 10⁻¹⁸ j, to three significant figures.

Year  1936,  lehman predicted that the earths 'inner core' is solid. she observed that the seismic signals during her study were bent and did not pass through instead bouncing back. later it was confirmed that the earth's inner core was solid made up of nickel-iron and had a molten outer core.

Ithink it takes sixty votes to approve a supreme court justice

Electricity and discharge