A rock has a mass of 15 grams and a volume of 5 cm3 what is the density of the object

The answer is

Explanation:

To find the density of a substance when given the mass and volume we use the formula

From the question

mass = 15 g

volume of rock = 5 cm³

The density of the substance is

We have the final answer as

Hope this helps you

it is to be noted that an alpha particle is an helium nucleus. so it contains 2 protons 2 neutrons and has a mass number of 4. when alpha decay particles are ejected from the nucleus it gets transformed into an atom which has atomic number less than 2 and a mass number less than 4.

an equation that could represent alpha decay is radium 226 decay of alpha particle forms radon 222.

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answer by yourhope:

how do models compare to real-world objects?

d. most models represent a real-world object in a simpler way.

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