B. located in the atom's nucleus.
Explanation:
Rutherford's experiment using a beam of alpha particles aimed at a sheet of gold foil led him to conclude that an atom's mass is located in the atom's nucleus.
- In his experiment, he bombarded a thin gold foil with alpha particles.
- He found that most of the alpha particles passed through the foil while a few of them were deflected back.
To explain this, he suggested an atomic model(nuclear model) in which an atom is made up of a small positively charged center or nucleus.
The mass is concentrated in the nucleus.
A large space containing electrons further surrounds the nucleus.
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Answer:
Some effects include:
- Alumminum particles reach aquatic environments and can harm fish and other wildlife. In these ecosystems acidity can also prevent fish eggs from hatching.
-
Acid rain can remove important minerals and nutrients from the soil preventing trees to grow, it can also poison them due to the aluminum particles.
- The fenomenon of e
pisodic acidification can occur, this means that acidity can be present in m
elting snow generating small lapses of higher acidity
- It can occur a n
itrogen pollution
I hope you find this information useful and interesting! Good luck!
Wavelength = (speed) / (frequency)
The speeds of the two possible signals are equal, just like
all other forms of electromagnetic radiation.
Wavelength of 895 MHz = (3 x 10⁸ m/s) / (8.95 x 10⁸/s) = 0.335 m
Wavelength of 2560 MHz = (3 x 10⁸ m/s) / (2.56 x 10⁹/s) = 0.117 m
Answer:
d. 2m to the right of the pivot
Explanation:
m1 = m
m2 = 0.5m
d1 = 1m
d2 = ?
from principle of moment,
CWM = ACWM
m × 1 = 0.5m × d2
d2 = m/0.5m
= 1/0.5
= 2m
The 2nd child will have to sit 2m to the right
The turning effect of a force is known as the moment. It is the product of the force multiplied by the perpendicular distance from the line of action of the force to the pivot or point where the object will turn.
The principle of moments states that when in
equilibrium the total sum of the anti clockwise
moment is equal to the total sum of the
clockwise moment.
When a system is stable or balance it is said to be in equilibrium as all the forces acting on the system cancel each other out.
In equilibrium
Total Anticlockwise Moment = Total
Total Anticlockwise Moment = TotalClockwise Moment
2. Write the chemical symbol of the atom.
1. Use the periodic table to find the chemical symbol of the atom and the number of electrons in the valence shell.
3.Draw dots around the chemical symbol to represent the valence electrons of the atom.
4. Count the dots to make sure that all of the valence electrons are represented.