Question

1. a technician reads and records the air pressure from several pressure gauges. the table shows each air - pressure reading in pascals (pa). a pascal is a unit used to measure the amount of force applied on a given area by air or other gases.

	a	b	c
air pressure (pa)

a. which pressure gauge has the greatest reading?
b. which pressure gauge has the lowest reading?
c. the atmospheric pressure when these readings were made was 1.1×10^5 pascals. which gauge(s) showed a reading greater than the atmospheric pressure?

1. identify the lesser number, and justify your reasoning.

8.7×10^7 or 5.9×10^7

1. 4.8×10^7 or 9.6×10^7

1. 3.1×10^(-5) or 7.5×10^(-5)

1. 6.9×10^(-3) or 4.3×10^(-3)

1. solve. show your work.

the table shows population data for four countries.

country	brazil	singapore	monaco	fiji

write each population in scientific notation.

Explanation:

Step1: Compare pressure values

We have pressure values: A = 210000 Pa, B = 3.2×10⁵ Pa = 320000 Pa, C = 170000 Pa.

Step2: Find the greatest value

Comparing 210000, 320000 and 170000, we see 320000 is the largest. So gauge B has the greatest reading.

Step3: Find the lowest value

Among 210000, 320000 and 170000, 170000 is the smallest. So gauge C has the lowest reading.

Step4: Compare with atmospheric pressure

Atmospheric pressure is 1.1×10⁵ Pa = 110000 Pa. Gauge A (210000 Pa), gauge B (320000 Pa) both have readings greater than 1.1×10⁵ Pa.

Answer:

a. Gauge B has the greatest reading.
b. Gauge C has the lowest reading.
c. Gauges A and B showed a reading greater than the atmospheric pressure.