Answer:
2.7s
Explanation:
The solution of time required is shown below:-
In the RC circuit condenser charge 63 percent of the full charge from initial time to constant time
Now, the
63% that is equal to 0.63 which is full equilibrium charge
Therefore, the time required to maintain will be Equal to time (t) constant that is 2.7s
So, the correct answer is 2.7s
The heat energy required is 2983 J
Explanation:
When an amount of energy Q is supplied to a certain sample of substance of mass m, the temperature of the substance increases by an amount of 
according to the equation
:
where
Q is the heat supplied
m is the mass of the object
is the specific heat capacity of the substance
is the change in temperature
For the glass bottle in this problem:
is the change in temperature
is the specific heat of glass
Substituting into the equation, we find
Learn more about specific heat capacity:
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The two neutral atoms A and B have the same number of electrons and atomic number 11. So, the two elements are said to be same.
The electronic configuration of the element is the arrangement of the electrons in the atom of the element in energy levels, orbitals around the nucleus.
The electrons in the atoms of the element with lowest energy are written first before those with higher energy levels. Thus, the electronic configuration shows the electrons in the atoms of the element arranged in order of increasing energies.
The electronic configuration of atoms are given as
A = 1s² 2s² 2p⁶ 3s¹
B = 1s² 2s² 2p⁶ 5s¹
The number of electrons in both the elements is 11. Therefore, their atomic number is also the same i.e, 11. So, both the elements are the same.
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Answer:
μ = 0.436
Explanation:
Given:
Change in diameter, ΔD = 7 × 10⁻³ mm
Original diameter, D = 11.2 mm = 11.2 × 10⁻³ m
Applied force, P = 14100 N
Cross-section area of the specimen, A = 
= 
Now,
elongation due to tensile force is given as:
or
on substituting the values, we get
or
where,
is the strain in the direction of force
Now,
now, the poisson ratio, μ is given as:
on substituting the values we get,
