1. calculate the speed of a wave that travels 10 cm in 4 seconds? 2. if a wave is moving with the speed of 10 cm/s, how far does it travel in 1.5 seconds?

3. what is the wavelength of a wave that has a speed of 40 cm/sand a frequency of 4 Hz?

4. what is the velocity of a wave that have a wavelength of 2 cm in if we can see him 25 Hz?

3.)velocity = νλ

Here,

v= 4 Hz = 4 /s

λ= 40 m , so both are ni SI unit

Therefore, speed of the wave will be, v= (4 x 40) m/s

v= 160 m/s

4.) wave velocity=50

2.)

1.)

i promise I will do these two.1 and 2

answer: cesare beccaria developed the classical school of criminology with from philosopher jeremy bentham

explanation:

ill do it for 100, also this isnt 80 its 40