Answer:
The magnetic force is 
Explanation:
From the question we are told that
The charge is 
The velocity is 
The magnetic field is 
Generally the magnetic force is mathematically represented as
=> 
=> 
=> N/B - Applied cross - product of unit vector
Answer:
Hands rubbed together to become warm
It can never be shorter than a component - magnitude of a vector is the square root of the sum of the components squared, and a square function never produces a negative number. However, it can be the same size as it's component, if that component is the only one.
If a zero is found between significant digits, it is significant. Zeros can be used as (insignificant) place holders to the left of significant digits if the number is a decimal. For example, a mass of 42 g has two significant digits. Expressed in kilograms, the mass of 0.042kg should still have two significant digits.
