Wave en surface of water Drops of water are falling from a tap into the free surface of water at regular time interval
creating waves the face of water
1. Specify the type of ware formed transverse or longiudinal)
* The graph in document 2 shows the variation of displacement of water partides es fonction
of time for the created wave.
0 sem
Der
058
2.1 Define the amplitude and Find its value
2.Fed the period of wave
3. The graph in document shows the variation of the displacement of water particles as
function of traveled distance for the created wave. Find the Wavelength graphically
A
A
Te
Der
Deduce the speed of the wave in (om).
Exercbe po
Variation of gravity
After launching a rocket of mass m300 kg inte pase, there was a change in its weight
wonding to the following table:
Altitude hikm)
0
500
1000
1500
Weight "w" (N)
3000 2400
2100
1950
Value of Gravity (NK)
1. Specify the mass of the rocket at an altitude 1500 km.
2. Copy and complete the table, by calculating the value of "" at different altitudes
3. Indicate how the gravity" varies with the altitude h.
4- Calculate the weight of the rocket, knowing that the gravity is equal to 9 N/kg
2
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