Atoms from two different elements may have the same number of neutrons, but never the same number of protons. The number of protons is unique to the element and represents the atomic number.
Final velocity
Data & Formula:
. final velocity: vf = ?
. initial velocity : vi = 1.9 m/s
. acceleration : a = 0.060m/s^2
. distance : d = 8.5 km
![vf\text{ = }\sqrt[]{vi^2+2ad}](https://tex.z-dn.net/?f=vf%5Ctext%7B%20%3D%20%7D%5Csqrt%5B%5D%7Bvi%5E2%2B2ad%7D)
![vf\text{ = }\sqrt[]{1.9^2\text{ + 2 }\cdot\text{ 0.060 }\cdot\text{ 8.5}}](https://tex.z-dn.net/?f=vf%5Ctext%7B%20%3D%20%7D%5Csqrt%5B%5D%7B1.9%5E2%5Ctext%7B%20%2B%202%20%7D%5Ccdot%5Ctext%7B%200.060%20%7D%5Ccdot%5Ctext%7B%208.5%7D%7D)
Resistance
R
of a conducting wire of length
l
and of area of cross section
A
is given by the expression
R
=
ρ
l
A
where
ρ
is resistivity or specific resistance of the material of the conductor.
Inserting given values in the expression in SI units we get
34
=
(
1.7
×
10
−
8
)
l
π
(
0.1
1000
)
2
4
⇒
l
=
34
1.7
×
10
−
8
×
π
4
(
0.1
1000
)
2
⇒
l
=
15.71
m
, rounded to two decimal places.
Answer:u=350m/sec
v=0m/sec
t=0.005sec
a=v-u/t
=0-350/0.005
= -350/0.005
= -350×1000/5
= -70×1000
= -70000 m/sec^2
Explanation: i think this will help you thankyou
