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Answer:
The amplitude of the wing tip's motion is 1.6 mm.
Explanation:
Given that,
Beat = 250 /s
Speed = 2.5 m/s
We need to calculate the amplitude of the wing tip's motion
Using the equation for the maximum velocity
Where,
v = speed
f = frequency
A = amplitude
Put the value into the formula
Hence, The amplitude of the wing tip's motion is 1.6 mm.
Answer:
Correct answer letter C.
Explanation:
As we see in this problem, the total linear momentum is conserved, since there are no external forces acting in that system.
So, we can say that or
Now, the initial momentum is zero, because before the person starts climbing, the system (balloon plus person) are floating motionless, therefore we have:
(1)
We know that M > m, therefore, m/M < 1 and using (1) we can deduce that V(balloon) < v(person).
Finally, we can say that the balloon moves down (because of the minus sign of V(balloon)) and its speed is less than v(person). Correct answer letter C.
I hope it helps you!
Answer:
99 joules.
Explanation:
Let m denotes mass of the object and v denotes velocity.
If mass has units of kilograms and the velocity has units of meters per second then the kinetic energy has units of joules.
Kinetic energy is an energy possessed by a body in motion.
Mass (m) = 99 kg
Velocity (v) = 2 m/s
To find kinetic energy, use the following formula:
Kinetic energy = joules