Answer:
the object is called Newton's cradle balance ball you can search it on Google
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:
2NaOH+H2SO4 Na2SO4+H2O the equation is balanced/unbalanced because the number of hydrogen atoms and oxygen/sodium is equal/not equal in the reactants and in the products.
Explanation:
Answer:
The answer is below
Explanation:
The equation for a linear line graph is given by:
y = mx + b, where y and x are variables, m is the slope of the graph and b is the y intercept (that is value of y when x is zero).
The slope (m) of a line passing through two points
is given by:

A) The first line passes through the point (0, 0) and (10, 60). It is represented as (time, velocity). Hence the slope is:

B) The second line passes through the point (10, 60) and (15, 60). Hence the slope is:

C) The third line passes through the point (15, 60) and (40, -40). Hence the slope is:

D) The third line passes through the point (40, -40) and (55, 0). Hence the slope is:
