Answer: 12.5m
Explanation:
Given the following :
Flagpole makes 20 complete vibrations in 10 seconds
Velocity (V) of vibration = 25m/s
Find the wavelength of vibration (λ) =?
Frequency is number of complete oscillation per Second
Therefore ;
Frequency (F) = number of oscillations / time taken
F = 20 / 10 = 2Hz
Wavelength = Velocity / frequency
Wavelength = 25 / 2
Wavelength = 12.5m
Answer:
a) mv(final):<0,0,0> minus mv(initial):<25,0,0> = <-25,0,0>
b) mv(final):<25,0,0> minus mv(initial):<0,0,0> = <25,0,0>
c) conservation of momentum makes it <0,0,0>
for a-b-c, momentum_system + momentum_surroundings = 0
Hope this helps
lights need elewctricity
G=mg
649=10m
m=64,9kg
if we consider the gravitational acceleration 10m/s^2
