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PHY1507 ASSIGNMENT 01 SOLUTIONS 2026

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PHY1507 ASSIGNMENT 01 SOLUTIONS 2026 DUE DATE: 30 April 2026 0-7-9-3-2-2-6-4-2-7 ALL QUESTIONS ARE ANSWERED CLEARLY AND LOGICALLY ALL CALCULATIONS AND STEPS ARE SHOWN IF NEED ASSIST REACH OUR

Institution
University Of South Africa (Unisa)
Course
Introductory Physics A (PHY1507)

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PHY1507 ASSIGNMENT 01 SOLUTIONS 2026

ALL QUESTIONS ARE ANSWERED CLEARLY AND LOGICALLY ALL CALCULATIONS
AND STEPS ARE SHOWN

IF NEED ASSIST REACH OUR

, Question 1

Significant figures

(a) 0.000079

Leading zeros are not significant
→ Only 7 and 9 count

Answer: 2 significant figures



(b) 8.002 × 10⁵

All digits in 8.002 are significant

Answer: 4 significant figures



Question 2

Convert area from ft² to m²

Area in ft²

𝐴 = 100.0 × 150.0 = 15000 ft2


Conversion

1 ft = 0.3048 m ⇒ 1 ft2 = (0.3048)2 = 0.092903
𝐴 = 15000 × 0.092903 = 1393.545 m2


Final Answer:

𝟏. 𝟑𝟗 × 𝟏𝟎𝟑 m𝟐
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