Question

Bacterius Infectus swims with a speed of 3.71 mm/s. How much time (in seconds) would it take Bacterius Infectus to swim directly across a petri dish that measures 8.61 cm in diameter?

Answer 1

23.20 seconds

Step-by-step explanation:

The first step is to convert the diameter of the petri dish to the units of the speed of Bacterius Infectus. Let's convert 8.61 cm to mm:

8.61 cm = 8.61 x 10 mm/cm = 86.1 mm

The distance that Bacterius Infectus needs to swim across the petri dish is the diameter, which is 86.1 mm. We can use the formula:

time = distance / speed

to find the time it would take for Bacterius Infectus to swim across the petri dish. Plugging in the values:

time = 86.1 mm / 3.71 mm/s

time ≈ 23.20 s (rounded to two decimal places)

Therefore, it would take Bacterius Infectus approximately 23.20 seconds to swim directly across the petri dish that measures 8.61 cm in diameter.

Answer 2

Diameter of petri dish = 8.61 cm = 86.1 mm

The distance that Bacterius Infectus needs to swim is the diameter of the petri dish, so:

Distance = 86.1 mm

Using the formula:

time = distance / speed

We can calculate the time it takes for Bacterius Infectus to swim across the petri dish:

time = distance / speed = 86.1 mm / 3.71 mm/s = 23.2 s

Therefore, it would take Bacterius Infectus approximately 23.2 seconds to swim directly across a petri dish that measures 8.61 cm in diameter.