The rubber protects him from being electrocuted by the flow of current going through the plug.
Hope this helped!!
Answer:
Concrete
Explanation:
The speed at which sound propagates is medium dependent. As one of the forms of mechanical waves, sound requires a material medium for propagation from place to place.
- Sound travels with the least speed in air because air particles are far apart and they are randomized.
- Sound travels with the greatest speed in solids. Concrete is the only solid material given in the choice.
The speed of sound increases from air to liquid and to solid.
One way to do it is she could right down the data that she got
Momentum is mass times velocity of the object
p = m • v
p = (7700 kg)(14 m/s)
p = 107809 kg m/s