객관식
What is the density of an object with a volume of 5 cm^3 and a mass of 55 g?
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1. Intro to General Chemistry
Density
객관식
Given a bloodstain with a length of 3.0 cm and a width of 1.5 cm, what is the angle of impact? (Use the formula: angle = arcsin(width/length))
A
60°
B
45°
C
arcsin(1.5/3.0) = 30°
D
30°
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검증된 단계별 안내1
Identify the given values: the length of the bloodstain is 3.0 cm and the width is 1.5 cm.
Recall the formula for the angle of impact, which is given by: \(\text{angle} = \arcsin\left(\frac{\text{width}}{\text{length}}\right)\).
Substitute the given values into the formula: \(\text{angle} = \arcsin\left(\frac{1.5}{3.0}\right)\).
Calculate the ratio inside the arcsin function: \(\frac{1.5}{3.0} = 0.5\).
Use the inverse sine function (arcsin) to find the angle whose sine is 0.5, which will give the angle of impact.
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