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Grace [21]
3 years ago
15

How can you find the nuetrons in youre element ??

Physics
1 answer:
miskamm [114]3 years ago
5 0

Answer: you subtract the number of protons from the mass number, on the periodic table your atomic number is your protons and your atomic mass is the mass number

Explanation:

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Is this a true and false statement?

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From a static hot air balloon, a 10kg projectile is launched at a speed of 10m / s upwards. If the balloon has a mass of 90kg. W
lesya692 [45]

Answer:

c. 1.11 m/s down

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Momentum is conserved.

m₁u₁ + m₂u₂ = m₁v₁ + m₂v₂

Assuming the balloon and projectile are originally at rest:

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8 0
3 years ago
Two balls are kicked with the same initial speeds. Ball A was kicked at the angle 20° above horizontal and ball B was kicked at
inysia [295]

Answer:Impossible to answer without knowing their actual initial speeds

Explanation:

Given

Ball A launched at angle of 20^{\circ}

Ball B is launched at angle of 75^{\circ}

At the highest  point Ball vertical velocity will be and there will be only horizontal velocity i.e. v_acos20 and v_bcos75

where v_a and v_b is the velocity of A & B

thus to find which one is greater we need to know their initial velocity.

It is impossible to know which one have higher velocity at highest point.

7 0
3 years ago
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