Who’s available for this assignment? Physical science

Physical Science SCI-201, Homework 1 Name

Spring, Posted May 28, Due June 1, 2021 J. No.

Type Step-by-Step Solution in WORD in the Space Provided, Save & Email to [email protected]

1. Solve Arithmetic / Algebraic Problems (Pay Attention to Order of Operation; 1-pt each):

a) 2 + 6 x 5 – 20 ¸ 10 =

b) 30 + (4 + 2) x (–5) =

.

c) Ö 81 – 15 + 43 =

d) (3 ¸ 4) ¸ (4/16) + (3/4/16)/4 =

e) 1/112 + 1/107 =

f) If x = 7 – a; y = 4x + 3 = what in terms of a?

A:

2. Solve Exponential Problems and Keep Correct Exponent in Scientific Notations (1 pt each):

a) (1.97 x 104) + (2.0 x 102) =

b) [(2.0 x 10–8) x (2.0 x 103)] ¸ (3.0 x 102)

c) (103 + 105) x (10–2 x 10–3) =

d) 103/107 + 106 ¸ 10–2 x 10–3 =

3. Rounding Off or Up the Numerical Numbers to Only 3 Significant Figures (3 S. F.; 1-pt each):

a) 0.000405400 =

b) 1.99 =

c) 0.005566304 =

d) 2.0780 x 103 =

4. Converting Scientific Units with Correct Number of Significant Figure (No. of S. F.; 1-pt each):

a) 2.00 lb = kg;

b) 3.5 miles = km;

c) 77 ˚F = ˚C;

d) 432,000 seconds = days;

e) 5.0 sq. ft. = cm2;

f) 2.5 cu. ft. = cm3.

5. Solve the Problems (English – Metric Unit Conversion on Length and Mass Required; Show Work):

a) Calculate the area, in cm2, of a circle with radius, r = 4.0 inches (1.0” = 2.54 cm, 2-pt):

A:

b) Calculate the area, in cm2, of a triangle with height, h = 4.0 in and base, b = 2.0 in (2-pt):

A:

c) Calculate the volume, in cm3, of a spherical ball with radius, r = 4.0” (VSphere = 4/3 x r3 x p, 2-pt):

A:

d) Calculate the density of 0.25 lb butter with volume as 135 cm3 in Correct Unit (1 lb =453.59 g, 4-pt):

A: