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hammer [34]
3 years ago
7

PLEASE HELP Describe how proteins facilitate the movement of things through the cell membrane. ​

Biology
1 answer:
Nesterboy [21]3 years ago
7 0
Bsveidv ehdbdb. Eueveyie
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A gun of mass 5k g fires a bullet of mass 20 g with a speed of 100 m/s. Find the recoil velocity of the gun
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Answer:Mass of bullet, m=20g=  0.02kg

​Velocity of bullet, v=100m/s  

Mass of gun, M=5kg

Let recoil velocity of gun =V

Before firing, the system (gun+bullet) is at rest, therefore, initial momentum of the system =0

Final momentum of the system = momentum of bullet + momentum of gun

=mv+MV=  

=2+5v

we know Final momentum = Initial momentum

i.e., 2+5v=0

5V=−2

v=-0.4m/s  

Negative sign shows that the direction of recoil velocity of the gun is opposite to the direction of the velocity of the bullet.

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3 years ago
Which of the following is a pyrimidine base in DNA?
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Answer:

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Characteristics of animal cells include which of the following? no cell wall, only plasma membrane large hypertonic vacuole no c
algol [13]
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An unusual type of fossil clam is found in rock layers high in the Swiss Alps. The same type of fossil clam is also found in the
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The layers of rocks in which the fossils were found are from the same geologic age

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