Hermes has a rotating wheel, or centrifuge, to provide artificial gravity for the crew. Spaceships in “2001: A Space Odyssey” and “Mission to Mars” were similarly equipped. Although it is not shown in the film, the astronauts would have used a Mars descent vehicle (MDV) to get down from Hermes to the surface.
Answer:
A continuous flow of negative charges (electrons) creates an electric current. The pathway taken by a electric current is a circuit.
Explanation:
If only I was smart then I could help you :/ no but like for real im madddd dumb sorry :(
1. 408.4 J
The work done by a gas is given by:
where
p is the gas pressure
is the change in volume of the gas
In this problem,
(atmospheric pressure)
is the change in volume
So, the work done is
2. 10170 J
The amount of heat added to the water to completely boil it is equal to the latent heat of vaporization:
where
m is the mass of the water
is the specific latent heat of vaporization
The initial volume of water is
and the water density is
So the water mass is
So, the amount of heat added to the water is
Explanation:
Coal is a fossil fuel and is the altered remains of prehistoric vegetation. The energy we get from coal today comes from the energy that plants absorbed from the sun millions of years ago. In the burning process of coal, carbon dioxide (CO2) is emitted. Humans expel CO2, and plants utilize it every single day. Carbon is a building block for all forms of life and is used in a lot of everyday products.
Coal is a combustible black or brownish-black sedimentary rock, formed as rock strata called coal seams. Coal is mostly carbon with variable amounts of other elements, chiefly hydrogen, sulfur, oxygen, and nitrogen.Coal is formed when dead plant matter decays into peat and is converted into coal by the heat and pressure of deep burial over millions of years. Vast deposits of coal originate in former wetlands—called coal forests—that covered much of the Earth's tropical land areas during the late Carboniferous (Pennsylvanian) and Permian times. However, many significant coal deposits are younger than this and originate from the Mesozoic and Cenozoic eras.
