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KengaRu [80]
2 years ago
4

Knowing that greenhouse gases are contributing to climate change, how can we reduce our carbon footprint, particularly in the Un

ited States? Could hydrogen fuel replace fossil fuels in the future? Why or why not? Should the size of a person’s carbon footprint be limited by law? Why or why not? No Response(s) New Response to Topic Be the first to respond to the Discussion topic!
Physics
2 answers:
Igoryamba2 years ago
5 0
We reduce our carbon footprint by setting personal limits like an amount of kids or how often you do things that produce carbon compounds.

Dafna11 [192]2 years ago
5 0

You can reduce our carbon footprints by using renewable energy , calculate your carbon footprint and make changes , use car less and minimize driving and walk or cycle more and reduce water use. Hydrogen fuel can not replace fossil fuels this is because fossil fuel use more energy and make more pollution.

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Astronomers have discovered a new planet called "Xandar" beyond the orbit of Pluto (No, not really but I need a fake planet for
Burka [1]

Answer:

m = 1.82E+23 kg

Explanation:

G = universal gravitational constant = 6.67E-11 N·m²/kg²

r = radius of orbit = 72,600 km = 7.26E+07 m

C = circumference of orbit = 2πr = 4.56E+08 m

P = period of orbit = 12.9 d = 1,114,560 s

v = orbital velocity of satellite Jim = C/P = 409 m/s

m = mass of Xandar = to be determined

v = √(Gm/r)

v² = [√(Gm/r)]²

v² = Gm/r

rv² = Gm

rv²/G = m

m = rv²/G

mG = universal gravitational constant = 6.67E-11 N·m²/kg²

r = radius of orbit = 72,600 km = 7.26E+07 m

C = circumference of orbit = 2πr = 4.56E+08 m

P = period of orbit = 12.9 d = 1,114,560 s

v = orbital velocity of satellite Jim = C/P = 409 m/s

m = mass of Xandar = to be determined

v = √(Gm/r)

v² = [√(Gm/r)]²

v² = Gm/r

rv² = Gm

rv²/G = m

m = rv²/G

m = 1.82E+23 kg

3 0
2 years ago
Physics in motion unit 6a the nature of waves
mylen [45]
What’s the question?
7 0
2 years ago
A negatively charged glass rod is brought near a neutral table tennis ball. What will happen to the neutral table tennis ball?.
Zina [86]

The neutral table tennis ball will become polarized, with positive charges toward the glass rod. The correct answer between all the choices given is the last choice or letter D. I am hoping that this answer has satisfied your query and it will be able to help you, and if you would like, feel free to ask another question.

7 0
2 years ago
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A 57 kg paratrooper falls through the air. How much force is pulling him down?
just olya [345]

Answer:

Explanation:

Force = Mass * acceleration due to gravity.

Given

Mass of the paratrooper = 57kg

Acceleration due to gravity = 9.81m/s²

Required

Force pulling him down

Substitute unto formula;

F = 57 * 9.81

Force = 559.17 N

Hence the force pulling him down is 559.17N

7 0
2 years ago
Liang is working with an electrical circuit. She replaces a straight electrical wire with a coiled wire. What is Liang most like
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increase the strength of the magnetic field when current flows through the circuit

She can change the arrows so they show current traveling in opposite directions on the sides of the loop.

halfway between the like poles of two magnets, because the field lines bend away and do not enter this area

A generator converts kinetic energy to electrical energy, and a motor converts electrical energy to kinetic energy.

A switch is closed, so the circuit would be complete and unbroken and the lights in the circuit would shine.

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2 years ago
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