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Lemur [1.5K]
3 years ago
11

After a nucleus with 85 protons undergoes alpha decay, it has ? protons.

Physics
1 answer:
Valentin [98]3 years ago
5 0

Answer:

After a nucleus with 85 protons undergoes alpha decay, it has  83 protons.

Explanation:

In an alpha particle there are two protons

In the given substance's nucleus, there are total of 85 protons

After the decay, the proton number reduce

The current proton number after decay is

85 -2 = 83

After a nucleus with 85 protons undergoes alpha decay, it has  83 protons.

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it will be base on the climate change.

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What are the two applications of electrostatic induction?
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What part of the electromagnetic spectrum can be seen by humans?
Oxana [17]

Answer:

Visible light

Explanation:

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Gamma rays

X-rays

Ultraviolet

Visible light

Infrared radiation

Microwaves

Radio waves

All these waves are invisible to human eye, except for the visible light part. Visible light is perceived as a different color by the human eye, depending on the wavelength of the light. In particular, we have:

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Blue: 450 - 495 nm

Green: 495 - 570 nm

Yellow: 570 nm - 590 nm

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4 0
3 years ago
a 1600 kg car on flat ground is moving 6.25 m/s. its engine creates 1150 N forward force as the car moves 45.8 m. what is it fin
Sveta_85 [38]

Answer:

83,900 J

Explanation:

First, find the acceleration:

F = ma

1150 N = (1600 kg) a

a = 0.719 m/s²

Now find the final velocity.

Given:

Δx = 45.8 m

v₀ = 6.25 m/s

a = 0.719 m/s²

Find: v

v² = v₀² + 2aΔx

v² = (6.25 m/s)² + 2 (0.719 m/s²) (45.8 m)

v = 10.2 m/s

Now find the final KE:

KE = ½ mv²

KE = ½ (1600 kg) (10.2 m/s)²

KE = 83,920 J

Rounded to three significant figures, the final kinetic energy is 83,900 J.

6 0
4 years ago
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