Answer:
that would probably be Rock A is harder than Rock B
Explanation:
Because if Rock A can scratch Rock B then it obviously means that Rock A is harder.
Right?
Hope This Helps You Out♡
Answer:
E = 0.437 N/C
Explanation:
Given that,
Charge, 
Electric force, 
Let the strength of the electric field is E. We know that, the electric force is given by :
F = qE
Where
E is the electric field strength

So, the strength of the electric field is equal to 0.437 N/C.
Gas pressure will also increase then.., if volume is kept constant
There must be a equal opposite reaction.
E=mv2
Answer:
The required acceleration is
m/s²
Explanation:
Given
To determine
Acceleration a = ?
We know that acceleration is produced when a force is applied to a body.
The acceleration can be determined using the formula

where
now substituting F = 250 , and m = 221 in the formula


switch the equation

Divide both sides by 221

simplify

m/s²
Therefore, the required acceleration is
m/s²