Question
What is the density of a cube with a side length of 2 meters and a mass of 40 kg?(1 point)
Responses
120 kg/m2
120 kg/m2
32 kg/m
32 kg/m
60 kgm
60 kgm
5 kg/m3
To find the density of the cube, we can use the formula: D = mass/volume.
The volume of a cube is calculated by taking the side length and cubing it, so for this cube, the volume would be (2m)^3 = 8m^3.
Plugging in the given mass of 40 kg and the volume of 8m^3 into the density formula, we get D = 40 kg / 8m^3 = 5 kg/m^3.
So, the correct answer is 5 kg/m^3.
What is the volume of a cube with a side length of 3 centimeters?(1 point)
Responses
9 square centimeters
9 square centimeters
27 cubic centimeters
27 cubic centimeters
3 cubic centimeters
3 cubic centimeters
6 square centimeters
To find the volume of a cube, we can use the formula: V = side length^3.
For a cube with a side length of 3 centimeters, the volume would be (3 cm)^3 = 27 cubic centimeters.
So, the correct answer is 27 cubic centimeters.
Question
What does the density of an object tell you about the object?(1 point)
Responses
how compact the object is
how compact the object is
how much matter the object has
how much matter the object has
what the weight of the object is
what the weight of the object is
what amount of space the object takes up
The density of an object tells you how compact the object is, or in other words, how much matter the object has in relation to the amount of space it takes up. Therefore, the correct answer is "how compact the object is" and "how much matter the object has."
Which term describes the amount of matter in a tree?(1 point)
Responses
the mass of the tree
the mass of the tree
the height of the tree
the height of the tree
the volume of the tree
the volume of the tree
the density of the tree