If the density of water is 1.0 g/cm3, which of the following objects will float on water?

An object that has a mass of 70 grams and a volume of 75 cm3
An object that has a mass of 60 grams and a volume of 60 cm3
An object that has a mass of 55 grams and a volume of 50 cm3
An object that has a mass of 40 grams and a volume of 20 cm3

Calculate the density of each object in the answer. density = mass/volume

If density of the object < density H2O it will float. If > water it will sink.
Post your work if you get stuck.

Can anybody help??

Thank you!!! I figured it out.

is it 70?

To determine whether an object will float on water, we need to compare its density to the density of water. If the density of the object is less than the density of water, it will float; if the density is greater, it will sink.

The density of an object can be calculated using the formula:

Density = Mass / Volume

Let's calculate the densities of the given objects:

1. For the object with a mass of 70 grams and a volume of 75 cm3:
Density = 70 g / 75 cm3 ≈ 0.93 g/cm3

2. For the object with a mass of 60 grams and a volume of 60 cm3:
Density = 60 g / 60 cm3 = 1 g/cm3

3. For the object with a mass of 55 grams and a volume of 50 cm3:
Density = 55 g / 50 cm3 = 1.1 g/cm3

4. For the object with a mass of 40 grams and a volume of 20 cm3:
Density = 40 g / 20 cm3 = 2 g/cm3

Now, let's compare the densities to the density of water (1.0 g/cm3):

1. The object with a density of 0.93 g/cm3 will float on water because its density is less than that of water.
2. The object with a density of 1 g/cm3 is equal to the density of water, so it will float.
3. The object with a density of 1.1 g/cm3 is greater than the density of water, so it will sink.
4. The object with a density of 2 g/cm3 is also greater than the density of water, so it will sink.

Therefore, the objects that will float on water are the ones with a density less than that of water. In this case, only the object with a mass of 70 grams and a volume of 75 cm3 will float.