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kompoz [17]
3 years ago
13

1. What is the change in atomic mass number when an atom emits an alpha particle?

Chemistry
1 answer:
GarryVolchara [31]3 years ago
6 0

<u><em>1. Decreases by 4. (B) </em></u>

<u><em>2. The atomic number changes. (B) </em></u>

<u><em>3. 56/26 Fe. (C) </em></u>

<u><em>4. Potassium-40;t1/2=25 days. (B) </em></u>

<u><em>5. Takes place in the upper atmosphere. (A)</em></u>

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What is the purpose of a unit conversion?
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3 years ago
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A box with a mass of 3.5 kg is pushed along a table. If the net force on the box is 35 Newtons, what is the acceleration of the
Vesnalui [34]

Answer:

<h2>10 m/s²</h2>

Explanation:

The acceleration of an object given it's mass and the force acting on it can be found by using the formula

a =  \frac{f}{m}  \\

m is the mass

f is the force

From the question

mass = 3.5 kg

force = 35 N

We have

a =  \frac{35}{3.5}  \\  = 10

We have the final answer as

<h3>10 m/s²</h3>

Hope this helps you

8 0
3 years ago
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