Question

1. calculating density we can figure out the density of blocks using division if we know their volume and mass. the equation is density = mass / volume. let’s try this using the “mystery” screen! select a set and find each object’s density set select: object mass (kg) volume (l) density (kg/l) sink or float? a 11.30 kg b 0.40 kg c 19.32 kg d 5.00 kg 5.00 e 2.80 kg 2.8 l 10.8 kg/l 10.80 kg/l

Explanation:

Step1: Recall density formula

Density = $\frac{\text{Mass}}{\text{Volume}}$

Step2: Calculate density for object A

Since volume of object A is not given, we cannot calculate its density.

Step3: Calculate density for object B

Since volume of object B is not given, we cannot calculate its density.

Step4: Calculate density for object C

Since volume of object C is not given, we cannot calculate its density.

Step5: Calculate density for object D

Density = $\frac{5.00\ \text{kg}}{5.00\ \text{L}} = 1.00\ \text{kg/L}$

Step6: Calculate density for object E

Density = $\frac{2.80\ \text{kg}}{2.8\ \text{L}} = 1.00\ \text{kg/L}$

Step7: Determine sink - or - float

Objects with density greater than the density of water (1 kg/L) sink, and those with density less than or equal to 1 kg/L float. For object D and E with density 1.00 kg/L, they will float.

Answer:

Object	Mass (kg)	Volume (L)	Density (kg/L)	Sink or Float?
B	0.40	Not given	Cannot be calculated	Cannot be determined
C	19.32	Not given	Cannot be calculated	Cannot be determined
D	5.00	5.00	1.00	Float
E	2.80	2.8	1.00	Float