Answer:

Explanation:
We are given that
Potential ,V=25 kV=
Distance,r =1 cm=
1 m=100 cm
Mass of electron, m=
Charge, q=
We have to find the final velocity of the electron.
Speed of electron,
Using the formula

v=
Hence, the final velocity of the electron=
Answer:
7.2 V
Explanation:
The three batteries are connected in series to the terminals of the phone: it means that they are connected along the same branch, so the current flowing through them is the same.
This also means that the potential difference across the phone will be equal to the sum of the voltages provided by each battery.
Here, the voltage provided by each battery is
V = 2.4 V
So, the overall voltage will be
V = 2.4 V + 2.4 V + 2.4 V = 7.2 V
Answer:
757.14 (2.d.p.)
Explanation:
CHECK THE IMAGE!! DEATHNOTE AT YOUR SERVICE. 12th Year Physics Kind Of Sucks!
1.2 x (2.2 x 10⁵) = 264,000 Ω
0.8 x (2.2 x 10⁵) = 176,000 Ω
With a 'nominal' value of 220,000 Ω, it could actually be anywhere <em>between 176,000Ω and 264,000Ω</em> .
C.c<span>onduction, is the transfers of heat between substances that are in direct contact.</span>