Answer
given,
height = 300 m
speed of aircraft = 40 m/s
propeller rotation = 20 rev/s
moment of inertia = I = 70 Kg/m²
mass = 200 Kg
since no non conservative force act on system, the mechanical energy is conserved after propeller fall off.
by conservation of energy
as there is no air resistance ωi = ωf
b) the rotation rate of the propeller remains same as there is no air resistance.
Answer:
option b
Explanation:
because the law of conservation
it means that energy can never created nor be destroyed
even it will change into another form if energy
<h2>
Answer: Doppler effect
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Explanation:
A radar gun (also known as a Doppler radar) uses the Doppler effect when measuring "return echoes" after having sent a microwave signal (a type of electromagnetic radiation).
In this context the Doppler effect consists of the change in a wave perceived frequency when the emitter of the waves, and the observer move relative to each other.
In the case of radars, a microwave signal is sent to a target (the tennis or baseball in this case) and then is reflected after "hitting" the target, so that the radar system measures this difference between the sent signal and the reflected signal.
Yes, every section of the chromosome is active because 1 chromosome can hold many genes that works together to make proteins
Answer : 
south
Explanation :
Given that,
Force = 200 N
Length = 2.00 m
Mass = 5.00 kg
We know that , the formula of the angular acceleration
We know the moment of inertia of rod
Now, the torque is
The angular acceleration
Negative sign represent of south direction.
Hence, this is the required solution.
