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Morgarella [4.7K]
2 years ago
13

The law of reflection states that if the angle of incidence is 38 degrees, the angle of reflection is ___ degrees.

Physics
1 answer:
Tasya [4]2 years ago
4 0

Answer:

38

Explanation:

because the law of reflection states angle of incidence is equal to the angle of reflection

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An airplane propeller is 2.68 m in length (from tip to tip) and has a mass of 107 kg. When the airplane's engine is first starte
telo118 [61]

Answer:

a)30.14 rad/s2

b)43.5 rad/s

c)60633 J

d)42 kW

e)84 kW

Explanation:

If we treat the propeller is a slender rod, then its moments of inertia is

I =\frac{mL^2}{12} = \frac{107*2.68^2}{12} = 64.04 kgm^2

a. The angular acceleration is Torque divided by moments of inertia:

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b. 5 revolution would be equals to 10\pi rad, or 31.4 rad. Since the engine just got started

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7 0
2 years ago
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