You perform an experiment to measure the speed of a car over time. The
results are shown in the graph below.
Speed (m/s)
Time (s
What was the speed of the car after 15 seconds?

O A. 15 m/s
O B. 30 m/s
O C. 22 m/s
O D. 25 m/s

we can conclude that the melting point of table salt is above room temperature (it's actually 801 deg c). the melting point of mercury must be below room temperature (- 39 deg c).

a saline water is fed to a reverse osmosis unit at flow rate o rotameter connected to reject (retentate) line reads 8 installed in reject and permeate line reads 15.2 milli siemens/cm and 300 micro siemens/com respectively.

it should have an internal chamber and two thermometers sticking out of the top. the internal chamber will also be closed off from the outside.