Homework to do for engineering class

ENGR 112 HW#1 NAME________________________

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1. Rewrite the following numbers in scientific notation and round them to Three significant digits. Also, rewrite the numbers in engineering notation using all significant digits.

Scientific Engineering a. 0.008562 b. 69520300 c. 6596.523x10

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d. 0.5692 e. 5.3954

2. What is the number of significant digits for each number below?

a. 0.2569000 b. 6.5900x10 5

c. 9586000 d. π

3. Perform the following mathematical operations and present the answers to the correct number of significant figures in scientific notation.

a. 523.468 + 85.650 – 25.698 b. -0.007658 + 22.0006 + 12.265

c. π – 52.69 x 10

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d. 85.694 + 1.236 - (5.897 + 0.00263)

ENGR 112 HW#1 NAME________________________

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4. Perform the following mathematical operations and present the answers to the correct number of significant figures in scientific notation. Assume all exponents are exact.

a.

(0.9563 × 10−2)(0.010096)

(19.678)(81902501)

b.

(𝜋)(659)(6.23 × 105)

𝑐𝑜𝑠(55.8°)√859.33 + 12.5675

c.

(52.562)𝑡𝑎𝑛(99.3°)

(88.60.31)(9826870)

d.

(5.654 × 10−3)(100.9.2 ) + 1566.99

3.6983

ENGR 112 HW#1 NAME________________________

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5. Express the following quantities in terms of their fundamental dimensions using the “absolute” dimensions M, L, and t:

a. Force b. Work c. Torque d. Velocity e. Pressure f. Mass Density g. Power h. Acceleration i. Volume