exam_1-practice - Exam I exercise PHY 2048 Section...

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Exam I exercise, PHY 2048 Section 803,Spring2005 1. Carry out the following operations of two measured values (be careful of the number of significant figures): (5.0 × 10 -3 ) × 9.12 2.50 + 20.32 A) 0.05 23 B) 0.05 22.8 C) 0.05 22.82 D) 0.046 23 E) 0.046 22.8 F) 0.046 22.82 G) 0.0456 22.82 2. A rectangular plate has a length of (4.3 ± 0.2) cm and a width of (1.8 ± 0.1) cm. Find the area of the plate and the uncertainty in the calculated area (cm 2 ). A) 8 ± 1 B) 7.74 ± 0.79 C) 7.7 ± 0.3 D) 7.7 ± 0.8 E) 7.74 ± 0.15 3. A particle moving along the x -axis has a position given by x = (24 t – 2.0 t 3 ) m, where t is measured in s . What is the magnitude (m /s 2 ) of the acceleration of the particle when the particle is not moving? A) 40 B) zero C) 12 D) 48 E) 36 F) 28 G) 32 H) 24 I) 17 J) 39 4. Problem continued: How far (m) is the particle from the origin ( x = 0) when the particle is not moving? A) 24
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exam_1-practice - Exam I exercise PHY 2048 Section...

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