Answer: Technician B
Explanation: A valve overlap occurs when both the exhaust valve and the inlet valve are open at the same time.
It is also seen as the number of degrees at which both the inlet and exhaust valves are open.
Valve overlap helps in boosting the efficiency of the engine by taking advantage of the expelled pressure from the exhaust.
It is expressed mathematically in degrees of shaft rotation.
So, Technician B is very correct.
The Answer is This sounds like refraction.
By Newton's second law, the apparent weight of rider coming at rest is <u>3548 N</u>.
According to formula, v = u + at
a = 39.2 m/
Force, F = ma
F = m(a+g)
F = apparent weight
m = mass, given = 65 kg
a = acceleration, given = 39.2 m/
g = 9.8 m/
Put these values in formula, F = m(a+g)
F = 65(39.2+9.8)
F = 3548 N
Therefore, the apparent weight of rider coming at rest is <u>3548 N</u>.
Learn more about apparent weight here:- brainly.com/question/24897276
#SPJ4
The atmosphere creates a cover over the earth preventing us from seeing space and it’s natural color and the light that is created by the sun reflected on the ocean creates the color that the sky appears to be blue
The answer is <span>B. 49 N</span>
Force is equal to the mass of that object multiplied by its
acceleration:
F = m × a <span>
The unit of force is N = kg * m/s².
It is given:
m = 0.25 kg
a = 196 </span>m/s²
<span>
F = </span>m × a = 0.25 kg × 196 m/s² = 49 N<span>
</span>
