Answer:
Explanation:
a
The angle each thread is making with the vertex = 16.5 degree
weight acting downwards = 66.7 x 10⁻³ x 9.8 N .
distance between two charges = 2 x 84.8 x 10⁻² sin 33/2
= .48 m
repulsive force between the two charges
= 9 x 10⁹ x q² / .48²
F = 39 x 10⁹ q²
Now, the tension in the thread be T
T cos 16.5 = mg
T sin 16.5 = F
dividing
tan 16.5 = F / mg = 39 x 10⁹ x q² / 66.7 x 10⁻³ x 9.8
.296 x 66.7 x 10⁻³ x 9.8 = 39 x 10⁹ x q²
q² = 4.96 x 10⁻¹²
q = 2.23 x 10⁻⁶ C
= 2.23 μC
Answer:
it would show a constant upward motion on the graph
Answer:
R₃ = 4.77 x 10⁻¹⁰ m = 0.477 nm
Explanation:
In 1913, Neil Bohr proposed an atomic model theory, based upon Quantum theory of radiation. This theory described the atomic structure, removing the defects of Rutherford's Model.
In this theory Bohr also derived the formula for the radius of nth orbit of hydrogen atom. The formula is as follows:
Rn = n²(0.53 x 10⁻¹⁰) m
Where,
Rn = Radius of nth orbit of hydrogen atom
n = no. of orbit
Therefore, for 3rd orbit
n = 3
R₃ = (3)²(0.53 x 10⁻¹⁰) m
<u>R₃ = 4.77 x 10⁻¹⁰ m = 0.477 nm</u>
Answer. Answer: answer is 1.25 seconds. 15 ÷ 12 = 1.25 sec.
Answer:
Aerobic exercise became part of this movement in the 1970s.