Answer:2
Explanation:
Given
Velocity of bicycle is 5 m/s towards north
radius of rim 
mass of rim 
Angular momentum 


direction of Angular momentum will be towards west
Answer:
The star is moving toward us
Explanation:
The wavelength of a distant object changes due to the change in the distance between the observer and the object. This is known as the Doppler effect.
If the wavelength decreases this means that the wavelength in going towards blue which is shorter wavelength. This is known as blue shift. If blue shift occurs then it means that the object is coming closer to the observer.
Hence, the star described here has blue shifted and is moving closer to us.
Answer:
sthe salt dissolves and the sand stays intact
The magnitude of the electric field inside the picture tube is 998.476 kN/C.
<h3>What is an electric field?</h3>
It is an area in the space where a charged particle experiences a force. It can be calculated by the formula,

Where,
= electric field produced
= charge = 
= distance = 
= Coulomb's constant = 
Put the values in the formula,

Therefore, the magnitude of the electric field inside the picture tube is 998.476 kN/C.
Learn more about the electric field:
brainly.com/question/3783640