Ahuman being can be electrocuted if a current as small as 48 ma passes near the heart. an electrician working with sweaty hands makes good contact with the two conductors he is holding. if his resistance is 2100 ω, what might the fatal voltage in volts be?

V = 100.8 V

Explanation:

given,

hum being can be electrocuted with current = 48 mA = 0.048 A

Resistance of the man = 2100 Ω

Fatal voltage  = ?

we know,

V = I R

V is the fatal voltage in Volts

R is the resistance provided by the human body

I is current

V = I R

V = 0.048 x 2100

V = 100.8 V

the voltage which can be considered as fatal is equal to  V = 100.8 V

the most reliable source of information.is wikipedia

the box does not move because you need to use a force greater than 300 n. you are only using 50 n. it needs to at least be 301 n for the box to move because then it is an unbalanced force and it will move the way that the greater force is pushing it. if you use only 300 n it will be a balanced force and will not move because the force you are exerting on the   box is the same as its force.

hope this !

im sorry if i went too in depth, i am going to include a link to a video on khan academy that will explain this.   hope that you like the video and that it explains more in detail to you.

that is the link.