I believe it is A bit not completely sure
Answer:
The correct answer is (a), heating and soaking at a temperature above the austenitizing level followed by rapid cooling.
Explanation:
Tempering is a heat treatment that is performed to change microstructure of steel <em>and increase it's hardness.</em>
It is done by heating above the austenitizing level, because for this heat treatment it's necesary to heat the steel to get <em>austenite structure</em> that is the <em>alotropic form of gamma iron.</em>
The procedure of tempering, continues with rapid cooling, because this way you get the microstructure with the best hardness properties, that is <em>martensite.</em>
Inertia is the tendency of an object to resist changes in its velocity. An object at rest has zero velocity.
Answer:
a = 70 m/s²
Explanation:
From Newton's second law of motion, we know that when an unbalanced force is applied to an object it produces acceleration in the object in the direction of the force. Therefore,
F = ma
a = F/m
where,
a = rightward acceleration = ?
F = Rightward net force = 700 N
m = Mass of Object = 10 kg
Therefore,
a = 700 N/10 kg
<u>a = 70 m/s²</u>
