Ask ya mother .. she birthed you so she’ll know .
Explanation:
We need to find the speed of a 3.1eV proton and a 3.1eV electron.
For proton, using conservation of energy such that,

is mass of proton

For electron,

is mass of proton

Hence, this is the required solution.
Answer:
They can give us information and energy.
Explanation:
Fossils can be burned to give us energy and fuel. They can also give us information about the earths history.
<h3><u>Answer;</u></h3>
3.53 cm
<h3><u>Explanation;</u></h3>
Mechanical advantage = Input distance/output distance
Input distance = 3.0 cm
Mechanical advantage = 0.85
Output distance = Input distance/Mechanical advantage
= 3.0/0.85
<u>= 3.53 cm</u>
Answer:
Magnitude of the hiker's total displacement = 3.5 km
Angle and direction of the hiker's total displacement = 22 degree south of west
Explanation:
The first Displacement in vector form is
= -4.5 cos 45i +4.5 sin 45j
= -3.182i + 3.182j
The second Displacement in vector form is
= -4.5j
The total displacement is ,

= -3.182i + 3.182j - 4.5j
=-3.182i-1.318j
The magnitude of the displacement is,



s= 3.444
The direction is,


