1.) The properties of a wave are the following.
a) <span><span>Amplitude - the height of the wave, measured in meters.
</span><span>b) Wavelength - the distance between adjacent crests, measured in meters.
</span><span>c) Period - the time it takes for one complete wave to pass a given point, measured in seconds.
</span><span>d) Frequency - the number of complete waves that pass a point in one second, measured in inverse seconds, or Hertz (Hz).
</span><span>e) Speed - the horizontal speed of a point on a wave as it propagates, measured in meters / second.
Among these properties, PERIOD and SPEED changes if the wave changes media. The others remain the same.
2. Speed = Wavelength * Frequency
Wavelength and Frequency are independent from each other. But you can use the given formula and assume values to check the reaction of one from another.
3. Energy of a wave is based on its amplitude. High amplitude means high energy and vice versa. To increase the energy of a wave, the amplitude must be increased. Another way of increasing the energy of a wave is using elastic medium. </span></span>
Answer:
1500 divided by 150(15m x 10m/s^2) = 10
Answer:
3091.56
Explanation:
t = Time taken
u = Initial velocity
v = Final velocity
s = Displacement
a = Acceleration due to gravity = 9.81 m/s² (positive downward and negative upward)

Distance traveled in the first stage is 1093.75 m

Velocity at the end of first stage is 87.5 m/s

Acceleration of the second stage is 4.5 m/s²

Distance traveled in the second stage is 1100 m

Distance traveled after the second stage has stopped firing is 894.81 m
Total height the rocket reached = 1093.75+1100+897.81 = 3091.56 m
Answer: Energy cannot be <u>created</u> or <u>destroyed</u> just <u>changes</u> in form.
Explanation:
This is the principle of the first Law of Thermodynamics, which relates the work and the transferred energy exchanged in a system through the internal energy, which is neither created nor destroyed, it is only transformed.
In other words: The total energy of a system is always conserved.