Answer:
When two balls are raised from one end and released, they strike the row and two balls pop out from the other end. If instead, one ball popped out with twice the speed of the two, this would violate <u>law of conservation of energy</u>.
Explanation:
"According to law of conservation of energy, energy can neither be created nor destroyed it only changes it's states."
we can prove it as
the initial momentum = 2mv
if one ball popped out with 2v then the momentum would be conserved.
But the initial kinetic energy of these two balls are given as
but if the speed of one ball is twice then that of other one then the kinetic energy won't remain conserved.
thus it violates the law of conservation of energy.
Answer:
It produces 1000Ω.
Explanation:
You have to apply Voltage formula, V = I × R :
V = I × R
6 = 0.006 × R
R = 6 ÷ 0.006
R = 1000Ω
Answer:
binding energy is 99771 J/mol
Exlanation:
given data
threshold frequency = 2.50 × Hz
solution
we get here binding energy using threshold frequency of the metal that is express as
..................1
here E is the energy of electron per atom and h is plank constant i.e. and x is binding energy
and here N is the Avogadro constant =
so E will
E =
so put value in equation 1 we get
= 2.50 × ×
solve it we get
x = 99770.99
so binding energy is 99771 J/mol