Answer:
A total of 2667 tires are required to satisfy the annual power needs of ten homes.
Explanation:
According to the Second Law of Thermodynamics, not all energy produced when tires are incinerated can be effectively used due to losses associated with finite temperature differences. The energy obtainable from a tire when burned, measured in kilowatt-hours (
), can be calculated using the efficiency definition:
Where:
- Efficiency, which is dimensionless.
- Energy released from burning, measured in kilowatt-hours.
Taking into account 
and 
, the yearly energy yield from a tire amounts to:
Thus, the number of tires necessary to meet the electricity demand of ten homes for one year is:
A total of 2667 tires are necessary to satisfy the annual power needs of ten homes.
Response:
0.125 moles
Explanation:
According to Avogadro's principle, one mole of any substance contains 6.02x10^23 atoms.
This implies that 1 mole of chromium consists of 6.02x10^23 atoms.
Therefore, if 1 mole of chromium corresponds to 6.02x10^23 atoms,
Then X moles of chromium are equivalent to 7.52x10^22 atoms, thus
X moles of chromium = 7.52x10^22/6.02x10^23
Thus, X moles of chromium = 0.125 moles
Consequently, 0.125 moles of chromium contain 7.52x10^22 atoms
Answer:
A pressure of 137.14 MPa exists 10,000 m beneath the ocean surface.
At this same depth, the density measures 2039 kg/m3.
Explanation:
P0 and ρ0 symbolize the pressure and density at sea level (indicative of atmospheric conditions). With an increase in ocean depth, both pressure and density likewise rise.
The relationship between pressure and density can be expressed as:
By rearranging
This equation allows for computation of P at 10,000 m beneath the ocean's surface:
The density found at a depth of 10,000 m in the ocean is
