D) Solid Waste
(I'm not 100% sure, let me know if I made a mistake :))
B. its be no dobut about it
Astronomers learn about the internal structure and evolution of stars by using spectroscopy and observing their luminosity.
New stars form in nebulae, interstellar gases and dust clouds leftover from supernovas.
Supernovas are the results of stars running out of its nuclear fuels.
The lifespan of a massive star is shorter than a star like the Sun because massive stars have very high pressures and temperatures at their cores and therefore burn their nuclear fuels faster. Stars grow larger as they age.
Answer:
Chemical potential energy is the energy stored in the chemical bonds of a substance. The various chemicals that make up gasoline contain a large amount of chemical potential energy that is released when the gasoline is burned in a controlled way in the engine of the car. The release of that energy does two things
Explanation:
The formula for potential energy depends on the force acting on the two objects. For the gravitational force the formula is P.E. = mgh, where m is the mass in kilograms, g is the acceleration due to gravity (9.8 m / s2 at the surface of the earth) and h is the height in meters.
Answer: 0.1125A
Explanation:
We need to know the total resistance which will be:
R = R1+R2
where,
R1 = 20 ohm
R2 = 60 ohm
Therefore, R = 20 + 60 = 80 ohm
We should note that from Ohm's law
v = iR
i = v/R
where,
i = 9/80 = 0.1125 A
Therefore, the current that flows out of the battery is 0.1125A