Answer:
1. The proton is deflected toward the east by the magnetic force, but its kinetic energy does not change
Explanation:
This is consequently because the magnetic field unlike the electric field, deflects the electron but does not change its speed or kinetic energy.
B is correct. Ever wondered why ice floats in water?
An object is in motion if its distance relative to another object is changing. To tell if an object is moving, you use a reference point. If an object's distance from another object [reference point] is changing. A place or object used for comparison to determine if something is in motion.
Answer:
The work done by the campers is 
(b) is correct option.
Explanation:
Given that,
Weight = 5000 N
Frictional force = 300 n
Distance = 1000 m
Constant rate of speed = 0.20 m/s²
We need to calculate the force
Using newton's law of motion
We need to calculate the work done
Using formula of work done
Put the value into the formula
Hence, The work done by the campers is
A variable is a letter so just be like
13a or something like that
