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Margaret [11]
3 years ago
9

What are the three subatomic particles that make up an atom

Physics
1 answer:
Harrizon [31]3 years ago
5 0

Answer:

Proton, neutron, electron

Explanation:

The atom consists of a nucleus, where almost all the mass is concentrated, and electrons orbiting around the nucleus.

The nucleus consists of two types of particles:

- Proton: it has a mass of 1.6726\cdot 10^{-27} kg, and a positive electric charge of +e (1.6\cdot 10^{-19}C)

- Neutron: it has a mass of 1.6749 \cdot 10^{-27}kg, and it has no electric charge

The third particle that makes an atom is the electron, that orbit around the nucleus:

- Electron: it has a mass of 9.1094\cdot 10^{-31}kg, and it has a negative electric charge of -e (-1.6\cdot 10^{-19}C)

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Does the earths magnetic field change with time?
ZanzabumX [31]

Answer:

As per the fossil fuel records, magnetic field reversal does not impact living beings. It will take almost a century for the poles to complete the shift. Meanwhile, the earth is left with almost zero magnetic field.

6 0
2 years ago
Larry drops a 5kg ball off of a building. The ball hits the ground 4.7s later. How tall is the building?
musickatia [10]

Explanation:

Given:

v₀ = 0 m/s

a = 9.8 m/s²

t = 4.7 s

Find: Δy

Δy = v₀ t + ½ at²

Δy = (0 m/s) (4.7 s) + ½ (9.8 m/s²) (4.7 s)²

Δy ≈ 110 m

8 0
3 years ago
What is the common trait of all main-sequence stars?.
Andrei [34K]

Answer:

They generate energy through hydrogen fusion in their core.

Explanation:

hope this helps :)

5 0
2 years ago
The conversion of thermal energy into mechanical energy requires
emmainna [20.7K]
Temperature difference is required, so i’m guessing - a. thermometer - would be required to check that temperature.
8 0
3 years ago
Which expression allows you to determine the mechanical advantage of an inclined plane?
Leya [2.2K]

Answer:

(C) length / height of the plane

Explanation:

The mechanical advantage of an inclined plane can be determined using different variables. In this case, the geometry of the setup is relevant. The advantage is proportional  to the length of the plane, and inversely proportional to the height: it is the ratio (length) / (height) of the plane. For example, given a desired, fixed height, a long inclined plane gives you a bigger mechanical advantage than a short inclined plane. In this example, pushing an object up the long plane will require a smaller force, than it would on the short plane.

Strictly speaking, (D) would also "allow you to determine the mechanical advantage" because you could simply invert the ratio listed under (D). However, (C) is the best, direct, answer.

4 0
3 years ago
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