Awave length 30 cm travels with frequency 15 s^-1. what is the speed of the wave? a.4.5 m/s b.9.0 m/s c.1.2 cm/s d.2.0 cm/s

Wavelength of the wave = 30 cm

Converting it into meters:

Wavelength = m

Frequency of the wave = 15 Hz

Let the speed of the wave be v.

The relation between wavelength, frequency and speed of the wave:

Speed = frequency x wavelength

Speed = 15 x 0.3

Speed = 4.5 m/s

Hence, the speed of the wave = 4.5 m/s

Hence, option A is correct.

f=ma a/f/m a= 480/60 a = 8m/s/s that is quick wow

force is mass*acceleration.

we have a very small mass: 11.4*0.001 kg

if we want 0.035n of force, we need an acceleration:

0.035 = 11.4*0.001*a

a = 0.035/(11.4*0.001) m/s^2