Answer:
answer is
a)
3/4
Explanation:
In the last 5 meters of braking, you lose 3/4 of your speed.
Answer:
Reduce manufacturing costs.
Explanation:
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Harmonic excitation refers to a sinusoidal external force of a certain frequency applied to a system. ... Resonance occurs when the external excitation has the same frequency as the natural frequency of the system. It leads to large displacements and can cause a system to exceed its elastic range and fail structurally.
Answer:
= -0.303 KW
Explanation:
This is the case of unsteady flow process because properties are changing with time.
From first law of thermodynamics for unsteady flow process

Given that tank is insulated so
and no mass is leaving so

Mass conservation 
is the initial and final mass in the system respectively.
Initially tank is evacuated so 
We know that for air
,

So now putting values

= -0.303 KW
The pilot valve and spark igniter are energized, the pilot flame is proved, and then the main gas valve is energized.