55. At the power substation near the edge of a large city, voltages are reduced and current is sent to the various neighbourhoods. Why don't the neighbourhoods get more current
than what came from the high voltage lines?

a. There are special transformers that reduce current and voltage at the same time.

b. A special DC system is used to change the voltages

C. The total current did increase, but it split off into various smaller currents.

d. The current is run out of energy at the substation so less is available to the
neighbourhoods.

force required to detach it is given by

charges are taken to be fundamental charge

now we have

so above is the minimum distance at which it will detach

according to jean piaget, in what stage of cognitive development are children able to understand conservation task?

b. preoperational

just took it

you'd use the equation that establishes a relationship between  energy  and  wavelength, which looks like this

e=h⋅cλ, where

λ  - the wavelength of the photon; c  - the speed of light, usually given as  3⋅108m/s; h  -  planck's constant, equal to  6.626⋅10−34j s

plug the value you were given for the energy of the photon in the above equation to get the wavelength

e=h⋅cλ⇒λ=h⋅ce

λ=6.626⋅10−34js⋅3⋅108ms−1.257⋅10−24j=1.581⋅10−1m