Physics, 10.07.2019 01:30 joewiii10

Acertain bacterium swims with a speed of 3m/s. how long would it take this bacterium to swim across a petri dish having a diameter of 8 cm

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Answer from: kimjooin02

The number of time it would take this bacterium to swim across a petri dish is equal to 0.0267 seconds.

Given the following data:

Distance = 8 cm. Speed = 3 m/s.

Conversion:

100 cm = 1 meter

8 cm = 0.08 meter

To determine the number of time it would take the bacterium to swim across a petri dish:

Speed can be defined as the distance covered by an object or organism per unit time and it is usually measured in meter per seconds (m/s).

Mathematically, speed is given by the formula;

$Speed = \frac{distance}{time}$

Making time the subject of formula, we have:

$Time = \frac{distance}{speed}$

Substituting the given parameters into the formula, we have;

$Time = \frac{0.08}{3}$

Time = 0.0267 seconds.

Read more on speed here: link

Answer from: sparky1234

Time = (distance) / (speed)

Distance = 8 cm or 0.08 meter

Time = (0.08 meter) / (3 meter/sec)

Time = (0.08 meter) · (sec / 3 meter)

Time = (0.08 / 3) (meter-sec/meter)

Time = 0.027 second

Answer from: Quest

answer: the exterior temperature of commercial jet planes as they leave the stratosphere and return to the ground increases steadily.

explanation:

the lower most layer of atmosphere is troposphere which extends from 0 to 12 km above the surface of the earth. the temperature initially decreases as distance is increased from the earth's surface. commercial jets fly in lower part of the stratosphere. the stratosphere extends upto 50 km. the temperature in stratosphere starts rising again due to presence of ozone which traps the uv rays.

thus, when the planes leave the stratosphere and return to the ground, the exterior temperature increases steadily.

Answer from: Quest

Neptune is the eighth planet from the sun. it was the first planet to get its existence predicted by mathematical calculations before it was actually seen through a telescope on sept. 23, 1846. irregularities in the orbit of uranus led french astronomer alexis bouvard to suggest that the gravitational pull from another celestial body might be responsible. german astronomer johann galle then relied on subsequent calculations to spot neptune via telescope. previously, astronomer galileo galilei sketched the planet, but he mistook it for a star due to its slow motion. in accordance with all the other planets seen in the sky, this new world was given a name from greek and roman mythology — neptune, the roman god of the sea.

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Acertain bacterium swims with a speed of 3m/s. how long would it take this bacterium to swim across...

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