Answer:
The time of flight of the ball is 1.06 seconds.
Explanation:
Given 
Also, 
Let us say the velocity in the x-direction is 
and in the y-direction is 
. And acceleration in the x-direction is 
and in the y-direction is 
.
Also, 
is distance covered in x and y direction respectively. And 
is the time taken by the ball to hit the backboard.
We can write 
. Where 
is velocity of ball.
Now,
Also,
.
Plugging this value in
So, the time of flight of the ball is 1.06 seconds.
Compounds contain two or more different elements.
Water is a molecule because it contains molecular bonds . Water is also a compound because it is made from more than one kind of element. (oxygen and hydrogen).
So If you like, you can say that water is a molecular compound.
HOPE IT HELPED YOU.
Answer:
he peaks are the natural frequencies that coincide with the excitation frequencies and in the second case they are the natural frequencies that make up the wave.
Explanation:
In a resonance experiment, the amplitude of the system is plotted as a function of the frequency, finding maximums for the values where some natural frequency of the system coincides with the excitation frequency.
In a Fourier transform spectrum, the amplitude of the frequencies present is the signal, whereby each peak corresponds to a natural frequency of the system.
From this explanation we can see that in the first case the peaks are the natural frequencies that coincide with the excitation frequencies and in the second case they are the natural frequencies that make up the wave.
