Explanation:
The net force along the horizontal direction is
where f is the frictional force. We can find the frictional force by looking at the vertical forces acting on the couch:
From the definition of frictional force,
Therefore, the net force on the couch is
velocity and wavelength are likely to change in the process
- When a wave travels from one medium to another it undergoes a change in direction and this is referred to as refraction.
- Refraction is the bending of a wave or a change in direction of a wave as it travels from one medium to another. Refraction is accompanied by change in velocity and wavelength of a wave
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Answer:
See Below
Explanation:
28. In ionic compounds the metal is always at the left.
MgBr2
Cu(SO4)2
CaCO3
FeO
Li2O
etc
29.
Elements from same group are more likely to have similar properties.
Since Y and Z have one valence electron they are from the same group, therefore are more likely to have similar properties
