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Sliva [168]
3 years ago
5

Which of these factors make hudrogen fuel cells a better option than burning fossil fuels

Physics
1 answer:
malfutka [58]3 years ago
6 0

Answer:

Hydrogen fuel cells have a higher energy efficiency. Hydrogen fuel cells create less pollution. Burning fossil fuels relies on outdated devices and technology. Pure hydrogen is more readily available than fossil fuels

Explanation:

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the Space Program has benefitted people in everyday life. Describe two ways in which people can benefit
ycow [4]
So we can know what is in space maybe weird or interesting stuff 

8 0
3 years ago
What is the escape velocity on the Venus ? Venus' mass 4.90*10^ 24 kg and radius is 6.86 * 10 ^ 6 * m
gtnhenbr [62]

The escape velocity on Venus is 9761 m/s

Explanation:

The escape velocity from a planet is the speed that an object on the surface of that planet must have in order to completely escape the gravitational field of the planet.

Mathematically, it is calculated as

v=\sqrt{\frac{2GM}{R}}

where

G is the gravitational constant

M is the mass of the planet

R is the radius of the planet

For Venus, we have:

M=4.90\cdot 10^{24}kg is the mass

R=6.86\cdot 10^6 m is the radius

Substituting, we find the escape velocity on Venus:

v=\sqrt{\frac{2(6.67\cdot 10^{-11})(4.90\cdot 10^{24})}{6.86\cdot 10^6}}=9761 m/s

Learn more about velocity:

brainly.com/question/5248528

#LearnwithBrainly

8 0
3 years ago
The line of latitude that is zero degrees latitude is the
Nuetrik [128]

Answer:

Equator

Explanation:

The equator is the line of latitude that separates the earth into the northern and southern hemisphere.Its magnitude is 0 degrees latitude. The equator and other lines of latitude are parallel to each other. The lines of longitude which is 0 degrees is known as the Greenwich meridian. The longitudinal lines however are not parallel as they converge at the poles.

7 0
3 years ago
If a drag racing motorcyclist has an initial speed of 10 m/s, and then he/she
Makovka662 [10]

<u>Answer:</u>

235 m/s

<u>Explanation:</u>

v = u + at

where v = final speed,

u = initial speed (10 m/s),

a = acceleration (15 m/s²),

t = time taken (15 s).

Substituting into the formula:

v = 10 + (15 x 15)

v = 10 + 225

v = 235 m/s

5 0
2 years ago
What is the speed of sound in air when the temperature is 20°C?
Anarel [89]
The answer to your question is 343 m/s
5 0
4 years ago
Read 2 more answers
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