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mr Goodwill [35]
3 years ago
15

An atom has an atomic number 17 and atomic mass number 35. How many neutrons are present in its nucleus?

Physics
2 answers:
Anna [14]3 years ago
7 0
The number of <span>neutrons that are present in its nucleus is 18. The correct option among all the options that are given in the question is the second option or option "B". Mass number minus the atomic number gives the number of neutrons. I hope that this is the answer that has come to your help.</span>
n200080 [17]3 years ago
7 0
The answer is option B. 18 ..

(no. of neutrons= mass no. - atomic no. )

Hope it helps !!!
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Which statements describe the factors affecting the strength of an electrical force? Check all that apply.
a_sh-v [17]

Answer: 2 and 4

Explanation:

6 0
3 years ago
A child on a 2.4 kg scooter at rest throws a 2.2 kg ball. The ball is given a speed of 3.1 m/s and the child and scooter move in
kykrilka [37]

Answer:

The child's mass is 14.133 kg

Explanation:

From the principle of conservation of linear momentum, we have;

(m₁ + m₂) × v₁ + m₃ × v₂ = (m₁ + m₂)  × v₃ - m₃ × v₄

We include the negative sign as the velocities were given as moving in the opposite directions

Since the child and the ball are at rest, we have;

v₁ = 0 m/s and v₂= 0 m/s

Hence;

0 = m₁ × v₃ - m₂ × v₄

(m₁ + m₂)× v₃ = m₃ × v₄

Where:

m₁ = Mass of the child

m₂ = Mass of the scooter = 2.4 kg

v₃ = Final velocity of the child and scooter = 0.45 m/s

m₃ = Mass of the ball = 2.4 kg

v₄ = Final velocity of the ball = 3.1 m/s

Plugging the values gives;

(m₁ + 2.4)× 0.45 = 2.4 × 3.1

(m₁ + 2.4) = 16.533

∴ m₁ + 2.4 = 16.533

m₁ = 16.533 - 2.4 = 14.133 kg

The child's mass = 14.133 kg.

3 0
3 years ago
Hi there hope your having a great day!! my questions both are SCIENCE laws of motion related fyi
Ann [662]
1. 6.0 m

force/mass× acceleration is the equation

since the accelaration is unknown you would divide 180 by the mass of 30kg which is 6

2.A


4 0
3 years ago
This is the third time I’m asking, please, On a wet road, is a higher coefficient of friction on the tires safer or a lower one
jenyasd209 [6]

Answer:

higher is safer

Explanation:

because it is a wet slippery surface, you would need more friction on the tires, to get more traction in the slippery wet road, if you had low friction you would not move anywhere and or could swerve off somewhere

4 0
1 year ago
Which theory was first proposed by Albert Einstein
elena-s [515]
General relativity was first proposed by Einstein.

Hope this helps! Let me know if you need the definition :)
5 0
2 years ago
Read 2 more answers
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