Answer:
(a)= 264mmHg
(b)= 2000mmHg
(c)474.82mmHg
(d)= 511.63mmHg
Explanation:
the question deals with boyles law, which states that the volume of a given mass of gas at constant temperature is inversely proportional to its pressure
V ∝ 1/P
P₁V₁ = P₂V₂
making V₂ as the subject of formular
P₂ = P₁V₁/ V₂
with a volume of 25.0L
P₂ = 660×10 / 25
= 264mmHg
with a volume of 3.30 L
P₂ = 660 × 10 / 3.30
= 2000mmHg
with a volume of 13900 mL
= 13.9L
P₂ =660× 10 / 13.9
474.82mmHg
with a volume of 12900 mL
P₂ =660×10 / 12.9
= 511.63mmHg
Answers and Explanation:
Forms of Kinetic energy
- Translational kinetic energy
- Rotational kinetic energy
- Vibrational kinetic energy
Forms of Potential energy
- Gravitational potential energy
- Electrostatic potential energy
- chemical potential energy
Energy efficiency is a measure of the amount of energy conserved in a process. It is the ratio of the output energy to the input energy.
Differences between renewable and non renewable energy
- Renewable energy can replenish themselves by recycling and replacement while non-renewable energy cannot
- Renewable energy are continuously available while non renewable energy are exhausted
- Renewable energy has low carbon emission and hence environment friendly while non renewable energy has high carbon emission and not environmental friendly
Sources of renewable energy
Solar energy.
Wind energy.
Hydro energy.
Tidal energy.
Geothermal energy.
Biomass energy.
Sources of non-renewable energy
Coal
Petroleum
Natural gas
Distribution of energy consumption in the US by energy sector
Petroleum = 36.2 %
Natural gas = 28%
Coal = 13.9%
Renewable energy = 11.0%
Nuclear electric power = 8.4%
Most of the energy consumed by the United States is non-renewable
Electricity is a secondary source of energy. It is derived from the conversion of primary sources
A secondary source of energy is a derivative from the transformation of primary sources of energy
Answer:
0.75 grams
Explanation:
Today we have 6 grams
In 30 years, 3 grams remain
In 60 years 1.5 grams remain
in 90 years 0.75 grams remain
mathematically It would look like this
m = 6(0.5⁽ⁿ/³⁰⁾) where n is number of years
Answer:
(a) To draw water from a well we have to pull at the rope.
(b) A charged body attracts an uncharged body towards it.
(c) To move a loaded trolley we have to pull it.
(d) The north pole of a magnet repels the north pole of another magnet.
Explanation:
Just trust me
Answer:
Option (A)
Explanation:
A flowchart can be described as a representation of a process or an algorithm in a sequential manner (stepwise) in the form of diagrams. These steps are made of symbols that are connected to one another with the help of arrows. These arrows are used to show the direction of the process.
There are mainly four symbols that are used to describe a flow chart, which includes-
- Oval or Pill Shape- This type of symbol is used to depict the start or the end of a process.
- Rectangle Shape- This type of symbols is used to describe the process
.
- Diamond Shape- This type of symbol is used to represent decision
s.
- Parallelogram- This type of symbol is used for the representation of an input or an output.
Thus, the correct answer is option (A).
