The nucleus of most atoms is composed of which of the following sub-atomic particles? (A) tightly packed neutrons

Physics

1 answer:

solmaris [256]2 years ago

4 0

Answer:

(B) tightly packed protons and neutrons

Explanation:

Nucleus of any atom is the dense central part of any atom.
It consists of two sub-atomic particle namely proton and neutron.
These sub-atomic parts are tightly packed in nucleus which makes the nucleus dense .
This dense nucleus is responsible for most of the mass of atom.
The atomic mass for any atom is decided by sum of the mass of proton and neutron

Thus, correct answer is

(B) tightly packed protons and neutrons

You might be interested in

A 14.0 m uniform ladder weighing 490 N rests against a frictionless wall. The ladder makes a 63.0°-angle with the horizontal.

crimeas [40]

Answer:

Explanation:

Given:

length of ladder $r_L = 14m$

weight of ladder $F_L = 490N$

position of firefighter $r_F = 3.8m$

weight of firefighter $F_F = 820N$

angle of ladder $\alpha = 63$

Unknown:

force of the wall on the ladder $F_W$

force of friction on base of ladder $F_R$

normal force on base of ladder $F_N$

From the free body diagram of the sketch you get 3 equations:

$F_x = ma_x = F_W - F_R = 0\\ F_y = ma_y = F_N - F_F - F_L = 0\\ \tau _P = \overrightarrow{r} \times \overrightarrow{F} = r_FF_Fcos\alpha + \frac{1}{2}r_LF_Lcos\alpha - r_LF_Wsin\alpha = 0$