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zlopas [31]
3 years ago
14

Hey I need help do animals take in oxygen and give off carbon dioxide or Plants take in oxygen and give off carbon dioxide or pl

ants take in carbon dioxide and give off oxygen which one is it can you please help me
Physics
2 answers:
ra1l [238]3 years ago
7 0
Animals take in oxygen and give off carbon dioxide while Plants take in carbon dioxide and give off oxygen
Sophie [7]3 years ago
3 0

Answer:

Animals take in oxygen and give off carbon dioxide.

Explanation:

This is because plants take in our carbon dioxide and give off the oxygen that we as people and animals need to breathe.

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Why is velocity squared in kinetic energy and mass multiplied by 1/2?
maxonik [38]
Remember the definition of work done.
Work done is force(F) times displacement(x)
∴ W = F.Δx 
According to Newton's 2nd law of motion,

F = ma
∴ W = ma.Δx ---- (i)
Using the kinematical equation v²-u² = 2ax,
aΔx = (v²-u²)/2 

Plug this value in (i),

∴W = m[\frac{v^{2}-u^{2}  }{2}]
∴W = \frac{mv^{2} }{2} -  \frac{mu^{2} }{2}

Which is nothing but change in kinetic energy.
That is how kinetic energy is derived 
5 0
3 years ago
A train leaves the station heading south on the tracks. It takes 5 seconds to reach 50 miles per hour. It completes the entire 1
Musya8 [376]
Well, in order to figure out the answer is to divide until you figure out how many miles they went per second. If it takes 5 seconds to reach 50 miles per hour it took 10 seconds per every 10 miles meaning each mile took 1 second. (Not actually possible but the answer) So, If it finished a 100 mile trip in 2 hours it took an hour for 50 miles. If it took 1 hour for 50 miles divide 60/50 which gets you 1.2 so it took 1.2 miles per minute meaning the car went 120 miles per hour I believe. I hope this helps :)
8 0
3 years ago
Read 2 more answers
How many seconds are in 28 hours?
kumpel [21]

Answer:

1680 seconds

Explanation:

28 hrs * \frac{60 s}{1 hr} =1680s

4 0
2 years ago
A man pushes a box along a flat, frictionless surface using a force of 500 N. The box was moved a distance of 2.5 m. The actual
andrey2020 [161]

Answer:

Workdone = 1250Nm

Explanation:

<u>Given the following data;</u>

Force, F = 500N

Distance, d = 2.5m

Workdone is given by the formula;

Workdone = force * distance

Substituting into the equation, we have

Workdone = 500 * 2.5  

Workdone = 1250Nm

Therefore, the actual work done by the worker is 1250 Newton-meter.

4 0
3 years ago
The only planet in the solar system with the temperature that can support life is
evablogger [386]

Answer:

earth

Explanation:

its the only planet.

6 0
3 years ago
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