Answer:
Liquid
Explanation: It can't be gas because gases are all around us and we can still see light. For solids it can't even move through a solid. Ex: If you're in a solid dome made of rock you can't get any light through. Let me know if I'm right!
Answer:
The combined mass of the two stars is 2.9417 solar masses.
Explanation:
The mathematical expression for Kepler's third law is;
=
Where: P is the period in days, a is the semimajor axis in AU, is the mass of the first star, is the mass of the second star and k is the Gaussian gravitational constant.
Given that;
P = 10 years = 3670 days (including two leap years)
a = 6.67 AU
k = 0.01720209895 rad
=
The sum of the masses of the two star can be determined by;
=
=
=
= 2.9417 solar masses
Thus the combined mass of the two star is 2.9417 solar masses.
Answer:
<h3>Advantages and Disadvantages of Electric Power</h3><h3>Advantages:</h3>
Electric power has many advantages domestically and industrially, as most of the equipment run by electric power. Brightness in the night is only possible by the use of electricity. Almost all the factories and industries are running due to electric power. The advantage of electric power is its reliable and uninterrupted supply runs the equipment efficiently and continuously. The transportation of electricity is easy once the transmission lines are functional. They work for years and need no or very less maintenance. The invention of electric power is one of the best inventions which have changed human life drastically. It allows people to do more leisure activities.
<h3>Disadvantages:</h3>
In the conventional system to generate electric power, coal is burnt to generate heat which boils the water to produce steam. The steam produced is used to run the turbines which in turn generate the electricity. This is a very old method to generate electricity which produces too much air pollution as a by-product. Due to the burning of coal, carbon monoxide, carbon dioxide, different oxides of sulphur and nitrogen are pumped into the atmosphere which pollutes it badly. As carbon dioxide is the greenhouse gas and its excessive presence in the atmosphere raises the earth’s temperature.
Distribution of electric power is in two types of current, AC and DC. Alternating current is 3 to 4 times more dangerous as compared to direct current. It causes more muscle contraction as it reduces skin resistance by stimulating sweating
Yes living things are made up of cells.
though we cannot feel cells but cell is the fundamental unit of living. cells are very tiny and are in millions of numbers.
The first person to study and discover about living cell was Robert Hooke.
cells are both structural and functional unit of living organism. which makes possible for a host cell to have a rigid body rather a fragile and weak. and it's coordinates the daily activities command down by brain through tissue cells and muscles