Answer:
Atoms are electrically neutral because there are an equal number of protons in the nucleus and In the cloud around the nucleus.
Explanation:
- The atoms that are the building block of matter consist of protons, neutrons, and electrons.
- The protons are positively charged and the electrons are negatively charged particles.
- The neutrons are negatively charged particles.
- The atoms in its stable natural state consist of an equal number of protons and electrons.
- Thus an atom has a neutral charge in its natural state.
Answer:
1.4584 kg
Explanation:
Time period of a physical pendulum is given by 
Here f=0.290 so 
Mass =2.40 kg
d=0.300 m
g =9.8 m
So 
kg-
So the moment of inertia of the pendulum about the pivot point will be 1.4584 kg-
Answer:
The answer is D.
Explanation:
Just like how cold air falls and warm air rises the same is with water.
Also the places with the coldest water is the north and south pole. The equator is relatively always warm so yeah.
B is the correct answer according to my calculations.
Answer:
Vx = 3.10 [m/s]
Vy = 11.59 [m/s]
Explanation:
To solve this problem we must decompose the velocity vector by means of the angle on the horizontal.
v = 12 [m/s]
Vx = 12*cos (75) = 3.10 [m/s]
Vy = 12*sin (75) = 11.59 [m/s]
