Answer:
0.67 s
Explanation:
This is a simple harmonic motion (SHM).
The displacement, 
, of an SHM is given by
A is the amplitude and 
is the angular frequency.
We could use a sine function, in which case we will include a phase angle, to indicate that the oscillation began from a non-equilibrium point. We are using the cosine function for this particular case because the oscillation began from an extreme end, which is one-quarter of a single oscillation, when measured from the equilibrium point. One-quarter of an oscillation corresponds to a phase angle of 90° or 
radian.
From trigonometry, 
if A and B are complementary.
At 
, 
So
At 
, 
The period, 
, is related to by
Answer:
The major difference between a primary cell and the secondary cell is that primary cells are the ones that cannot be charged but secondary cells are the ones that are rechargeable
Explanation:
Alpha emission is the process results in a change in mass number. Option B is correct.
<h3>What is mass number?</h3>
The total number of protons and neutrons in an atomic nucleus is known as the mass number, often known as the atomic mass number or nucleon number.
It's about the same as the atom's atomic mass, expressed in atomic mass units.
The alpha particle is a helium nucleus with two protons and two neutrons in an alpha decay or alpha emission. The number of protons and neutrons is reduced by two as a result of this action.
The quantity of protons and neutrons is affected by gamma emission descent. Also, while electron capture has no effect on the number of neutrons, it does raise the 1 also number of protons by one.
Alpha emission is the process results in a change in mass number.
Hence option B is correct.
To learn more about the mass number, refer:
brainly.com/question/4408975
#SPJ1
Answer:
(a) 
(b) 
Explanation:
Let:
mass of father be, 
mass of son be, 
speed of son be, 
initial speed of father be, 
After speeding up, speed of father is 
<u>We know Kinetic Energy is given as</u>
.....................................(1)
where:
m = mass
v = velocity
Hence, according to the initial condition the father is having kinetic energy half the kinetic energy of the son.
.................................................(2)
According to the final condition:
.....................................................(3)
(a)
From eq. 2 & 3
(b)
<em>putting the above value in eq. (2)</em>
Answer:
x-cochlea
Explanation:
The cochlea is a hollow, spiral-shaped bone found in the inner ear that plays a key role in the sense of hearing . Sound waves are transduced into electrical impulses that can be interpreted by the brain as individual frequencies of sound.
so the ans should be-It sends information to the nerve due to fluid vibrations.
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