Physics Fundamentals
2nd Edition
ISBN: 9780971313453
Author: Vincent P. Coletta
Publisher: PHYSICS CURRICULUM+INSTRUCT.INC.
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Chapter 0, Problem 19P
(a)
To determine
Rounding off
(b)
To determine
Rounding off
(c)
To determine
Rounding off
(d)
To determine
Rounding off
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State the number of significant figures in the following :(a) 0.007 m2
(b) 2.64 × 1024 kg
(c) 0.2370 g cm-3
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(f) 0.0006032 m2
Express this product in units of m3 in scientific notation with the appropriate number of significant figures: (2.90 km) × (350 cm) × (1.005 10-2 mm)
The length and width of a rectangular room are measured to be 3.885 ± 0.0065 m and 3.2 ± 0.0045 m. In this problem you can approximate the error on a product or quotient of quantities by the sum of the percent error on each quantity.Calculate the floor area of the room in square meters.
Chapter 0 Solutions
Physics Fundamentals
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- One student uses a meterstick to measure the thickness of a textbook and obtains 4.3 cm 0.1 cm. Other students measure the thickness with vernier calipers and obtain four different measurements: (a) 4.32 cm 0.01 cm. (b) 4.31 cm 0.01 cm, (c) 4.24 cm 0.01 cm, and (d) 4.43 cm 0.01 cm. Which of these four measurements, if any, agree with that obtained by the first student?arrow_forwardIn general, when a derived unit becomes complicated (involves too many standard units), what is done?arrow_forwardIs the following statement reasonable? The area of a dorm room is 49 m2.arrow_forward
- If the DNA strand in a molecule could be stretched out, it would have a length on the order of 2.0 m. What would this be in feet and inches?arrow_forwardRoughly how many heartbeats are there in a lifetime?arrow_forwardCarry out the arithmetic operations (a) the sum of the measured values 756, 37.2, 0.83, and 2; (b) the product 0.003 2 356.3; and (c) the product 5.620 .arrow_forward
- A surveyor measures the distance across a straight river by the following method (Fig. P1.6). Starting directly across from a tree on the opposite bank, she walks d = 100 m along the riverbank to establish a baseline. Then she sights across to the tree. The angle from her baseline to the tree is 0 = 35.0. How wide is the river? Figure P1.6arrow_forwardThe following masses are given in kilograms. Use metric prefixes on the gram to rewrite them so the numerical value is bigger than one but less than 1000. For example, 7 × 10−4 kg could be written as 70 cg or 700 mg. (a) 3.8 × 10−5 kg; (b) 2.3 × 1017 kg; (c) 2.4 × 10−11 kg; (d) 8 × 1015 kg; (e) 4.2 × 10−3 kg.arrow_forwardA) A pyramid has a height of 488 ft and its base covers an area of 10.0 acres. The volume of a pyramid is given by the expression: V=1/3Bh, where B is the area of the base and h is the height. Find the volume of the pyramid in cubic meters. (1 acre = 43,560ft^2). B) What If? If the height of the pyramid were increased to 525 ft and the height to base area ratio of the pyramid were kept constant, by what percentage would the volume of the pyramid increase?arrow_forward
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