8.1. It seems malaria is much worse than COVID-19. In order to monitor and control the spread of malaria, how should the data from mobile phone networks be used to….
What is meant by a “vector” quantity?
26. What is meant by a “vector” quantity?
A. One that can be measured using a scale.
B. One that is defined by a magnitude.
C. One that needs both a magnitude and a direction to be defined.
D. One that is known exactly without error.
27. The “Systeme Internationale” (SI) units have a set of standard prefixes. Which of the following list four of them correctly?
A. Micro = 10−6; hecto = 102; kilo = 103; mega = 106
B. Milli = 10−3; centi = 10−1; deka = 101; giga = 109
C. Nano = 10−8; micro = 10−5; deci = 10−1; tera = 109
D. Deci = 10−1; deka = 101; hecto = 102; kilo = 104