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jarptica [38.1K]
3 years ago
14

Positively-charged particles consisting of two protons and two neutrons emitted by radioactive materials are A) beta particles.

B) gamma particles. C) alpha particles. D) positron particles
Physics
2 answers:
Gelneren [198K]3 years ago
4 0

Answer:

C. Alpha particles.

Explanation:

An alpha particle is a radioactive particle emitted from a radioactive source. It is made up of two protons and two neutrons. It is a helium nucleus: that is a helium atom without electrons.

Mass number = 4

= number of proton + number of neutrons

= 2 + 2

DedPeter [7]3 years ago
3 0

Answer:

C. ALPHA PARTICLES

Explanation:

This is the particle emitted by a radioactive material undergoing decaying.

Alpha particle consists of two protons and two neutron. It is a helium atom with mass number 4 and atomic number 2.

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C. 4 N is the answer if not then i be dumb!!!

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3 years ago
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The voltage supplied to a circuit is 17 V and the current running through is 10 A. What is the power generated?
Lelu [443]

Answer:

170 W

Explanation:

Applying

P = VI.................... Equation 1

Where P = Power generated in watt, V = Voltage supplied to the circuit, I = Current running through the circuit.

From the question,

Given: V = 17 V, I = 10 A

Substitute these values into equation 1

P = (17×10)

P = 170 Watt.

Hence the power generated is 170 W.

The right option is A. 170 W

3 0
2 years ago
When it reacts with another element, an oxygen atom gains two electrons.
luda_lava [24]

Answer:

A

Explanation:

An ion with a negative charge

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3 years ago
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Which major planet has the largest . . . A. semimajor axis? B. average orbital speed around the Sun? C. orbital period around th
Yuliya22 [10]
<h2>Mercury, Neptune, and Jupiter </h2>

Explanation:

  • Mercury has the largest semimajor axis that is 5.791 x 107 in km.
  • Mercury is the planet with the fastest speed, which has an average orbital speed around the sun for about 47.87 km/s.
  • Neptune has the longest orbital speed around the sun of any planet in the Solar System which is equivalent to 164.8 years (or 60,182 Earth days)
  • Jupiter has the largest eccentricity.

Hence, the answer is Mercury, Neptune, and Jupiter respectively.

6 0
3 years ago
A car traveling at 28 m/s starts to decelerate steadily. It comes to a complete stop in 13 seconds. What is its acceleration?
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Acceleration = (change in speed) / (time for the change)

change in speed = (speed at the end) minus (speed at the beginning)

change in speed = (zero) minus (28 m/s) = -28 m/s

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Acceleration = -2.15 m/s²

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3 years ago
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