I think it's true
I'm not really sure
<span>The answer is 15 centimeters. The waves with the
smallest wavelengths (also highest
frequency) have the least capacity to diffract around objects hence have a
shadowing effect, behind the object, especially if the wavelength is small
compared to the object. This is also the reason why high-frequency electromagnetic waves do not have a good reach in mountainous
regions. </span>
Answer:
The kinetic energy when the film vault landed is 12744000J.
Explanation:
The kinetic energy is defined as:
(1)
Where m is the mass and v is the velocity.
By means of equation 1, the kinetic energy of the film vault when it landed can be determined
But
Hence, the kinetic energy when the film vault landed is 12744000J.
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h = 0 when the ball hit the ground, so
<span>0 = rt - 16t^2 </span>
<span>Since r = 32, </span>
<span>0= 32t - 16t^2 </span>
<span>16t(2 - t) = 0 </span>
<span>t = 0 or 2 </span>
<span>At t=0, h=0 but the ball hasn't left the ground yet. </span>
<span>Thus, the answer is 2.</span>