Explanation:
A lightning rod (US, AUS) If lightning hits the structure:-
It will preferentially strike the rod and be conducted to ground through a wire.
Instead of passing through the structure, where it could start a fire or cause electrocution.
The parts of a lightning protection system are air terminals (lightning rods or strike) and all of the connectors and supports to complete the system.
R=U/I so
U=RxI
U= 10 x 42
U= 420 volts
C. The heating element on a stove turning from black to orange
Hope this helps =]
Answer: 48 m
Explanation:
Since we are dealing with constant acceleration, we can use the following equations:
(1)
(2)
Where:
is the cart’s final velocity
is the cart’s initial velocity
is the cart's acceleration
is the time
is the cart's displacement
So, firstly we have to find from (1):
(3)
(4)
Isolating from (2) and substituting (4):
(5)
(6)
Finally: