Which item does not prevent electrical accidents?

a. superconductor

b. ground-fault circuit interrupter

c. fuse

d. circuit breaker

Hello there!

The fuse, circuit breaker and ground-fault circuit interrupter are things that broke when the current is high enough, cutting the circuit in the process and prevent possible electrical accidents.

A superconductor, for the other hand, is a very good conductor with almost zero resistance, this has nothing to help prevent electrical accidents, it is just a very very good conductor.

we're given that v₀ = 0 and a = 5.4 m/s². therefore, since v = at + v₀ for constant acceleration the equation for velocity is

after 28s,

m/s

which i would round to 150 m/s as my final answer

the minimum constant speed at which she can catch the train is 2.7 m/s

given:

acceleration = 0.6

time = 4.5 s

to find:

velocity = ?

formula used:

from 1st kinematic equation we get,

v = u + at

u = initial speed of train = 0 m/s

v = final speed of the train

a = acceleration of the train

t = time

solution:

from 1st kinematic equation we get,

v = u + at

u = initial speed of train = 0 m/s

v = final speed of the train

a = acceleration of the train

t = time

v = 0 + (0.6 × 4.5)

v = 2.7 m/s

the minimum constant speed at which she can catch the train is 2.7 m/s