Answer:
Acceleration of the bullet will be 1778835.6
Explanation:
We have given length of the barrel refile s= 0.855 m
When the bullet leaves the muzzle its velocity is 553 m/sec
So final velocity v = 553 m/sec
Initial velocity will be 0 that is u = 0 m/sec
According to third equation of motion 


This is a ball and socket joint.
Let
be the direction the swimmer must swim relative to east. Then her velocity relative to the water is

The current has velocity vector (relative to the Earth)

The swimmer's resultant velocity (her velocity relative to the Earth) is then


We want the resultant vector to be pointing straight north, which means its horizontal component must be 0:

which is approximately 41º west of north.
B. electric and magnetic fields.
Explanation:
This is a wave diagram of an electromagnetic wave showing vibration of both electric and magnetic fields.
An electromagnetic wave is made up of electric and magnetic fields vibrating.
- These waves are deflected neither by electric fields nor magnetic fields.
- The electromagnetic field is made up of a broad range of radiations.
- Visible light is an electromagnetic radiation.
- The magnetic and electric fields are oriented perpendicularly and they are transverse waves.
Learn more:
Electromagnetic waves brainly.com/question/12450147
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α=30°
F=20 N
Fh=F*cos(α)
Fv=F*cos(90-α)=F*sin(α) (vertical component of the force F)
Fv=20*0,5=10.00 N
Answer (C)