Answer:
Density of 127 I =
Also,
Explanation:
Given, the radius of a nucleus is given as
.
where,
- A is the mass number of the nucleus.
The density of the nucleus is defined as the mass of the nucleus M per unit volume V.
For the nucleus 127 I,
Mass, M =
Mass number, A = 127.
Therefore, the density of the 127 I nucleus is given by
On comparing with the density of the solid iodine,
<h3>Hi!</h3>
The answer would be B. Lower.
Explanation:
This is because Force between two bodies is directly proportional to the mass of an object, but inversely proportional to the square of the distance between them.
So if the mass of the moon becomes twice, the force would also be twice as strong. (2 F ) , but if the distance is doubled, this force (2 F ) would be quartered ( 2F/4 = F/2 ) which would be half of the original force F.
Hence if the force is halved, the tides would be lower.
<h3>Hope this helps!</h3>
Answer:
1.62 m/s
Explanation:
Wavelength of the water wave= 54 m
The frequency is 0.03 Hz
Therefore the velocity can be calculated as follows
Velocity= frequency × wavelength
= 0.03 × 54
= 1.62 m/s
Answer:
W/16
Explanation:
The force of gravity, W = mg = GMm/R²
When R increases by a factor of four, W decreases by 4² or 16.