Answer:
Explanation:
Impossible to say without knowing how high point D is.
If we ignore friction, the energy converted from potential energy will exist as kinetic energy.
let d be the height in meters of point D "in the air"
mg(19 - d) = ½mv²
m is common so divides out
g(19 - d) = ½v²
v = √(2g(19 - d))
no sense in making g any more precise than the height. g = 9.8
v = √(2(9.8)(19 - d))
v = √(19.6(19 - d))
Answer:
Nope!
Explanation:
The amplitude of a wave does not affect the speed at which the wave travels. Both Wave A and Wave B travel at the same speed. The speed of a wave is only altered by alterations in the properties of the medium through which it travels.
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Answer:
The highest pressure is located at points x & y.
Explanation:
The pressure will be greater at the X & y points, because they are at a deeper distance than the Z point. We must remember that the pressure is a function of the depth of the fluid, and is expressed by the following equation.
![P = densi*g*h\\where\\densi = density [kg/m^3]\\g = gravity [m/s^2]\\h = elevation [m]](https://tex.z-dn.net/?f=P%20%3D%20densi%2Ag%2Ah%5C%5Cwhere%5C%5Cdensi%20%3D%20density%20%5Bkg%2Fm%5E3%5D%5C%5Cg%20%3D%20gravity%20%5Bm%2Fs%5E2%5D%5C%5Ch%20%3D%20elevation%20%5Bm%5D)
The pressure is always measured with respect to the liquid level towards the depth of the fluid, so at greater depth greater pressure
Answer:
40,000N of force
Explanation:
The formula for force is F=ma. If we plug in the values, F=(20,000kg)(2m/s^2).
Answer:
Approximately 22.9 seconds.
Explanation:
A sound wave travel 340m in 1 sec
For 7800m it will travel;
= 22.94117647 sec
It will take approximately 22.9 seconds.
