:'( Please help me....?
(7 points)
2. Contrast the metric units of distance, time, and speed. Describe the relationship between them.
Answer:
(11 points)
3. A microbiologist measures the speed of a swimming bacterium. The bacterium covers a distance of 2.16 microns in 5.0 seconds. The biologist wished to compare the speed of the bacteria with other animals, but the speeds of other animals are listed in kilometers per hour. What is the speed of the bacterium in kilometers per hour? (1 micron = 1 x 10–6 m) Use scientific notation and express your answer to the correct number of significant figures.
You must show your work for full credit.
Answer:
2. Meters, Seconds, and Meters/s.
3. V = 2.16mic/s * 10^-6m/mic * 1km/1000m * 3600s/h = 7.78*10^-6 km/h.
(7 points)
To contrast the metric units of distance, time, and speed, we first need to understand what each unit represents:
1. Distance: Distance is a measure of how far apart two objects are. In the metric system, the base unit of distance is the meter (m). Other commonly used metric units of distance include the kilometer (km), centimeter (cm), and millimeter (mm).
2. Time: Time is a measure of the duration between two events. In the metric system, the base unit of time is the second (s). Other commonly used metric units of time include the millisecond (ms), minute (min), and hour (h).
3. Speed: Speed is a measure of how fast something is moving. In the metric system, speed is typically measured in meters per second (m/s). However, it can also be measured in kilometers per hour (km/h) or any other combination of distance and time units.
The relationship between these units can be explained by the formula for speed, which is distance divided by time:
speed = distance / time
So, if we want to calculate speed, we need to know the distance traveled and the time it took to travel that distance. We can then choose the appropriate units for distance and time, and the speed will be expressed in the resulting units.
Now let's move on to question 3.