Answered: Lance is researching what effect light…

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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Question

Lance is researching what effect light brightness has on how many leaves a specific plant develops. He reads that there is a strong positive correlation between the two values. Based on this, which of the following statements is true?

	Plants exposed to dimmer lights will form more leaves.
	There isn't a relationship between brightness and number of leaves.
	Plants exposed to brighter lights will form more leaves.
	Plants exposed to brighter lights will form fewer leaves.

McKenna is performing an experiment. She is testing the relationship between the temperature of water, and how long it takes for rust to form on iron plates. If she finds that higher temperatures lead to lower times for rusting, what is the qualitative relationship?

	negative correlation
	no correlation
	positive correlation
	inverse square correlation

Salim has just performed an experiment on the relationship between the time spent growing, and the weight of tomatoes. In his laboratory report, he says "There is a strong positive correlation between the variables. The line of best fit is w=0.05⁢t+1.25." What type of relation has Salim provided?

	neither quantitative nor qualitative
	both quantitative and quantitative
	quantitative
	qualitative

When analyzing the results of her experiment, Pearl provided the following information, "The variables are related by the equation m=3.20⁢t−0.15." Which of the following qualitative relationships is accurate?

	no correlation
	non-linear correlation
	positive correlation
	negative correlation

When the Greek letter Δ (delta) is used in an equation, what does it represent?

	velocity
	square root
	change
	sum

Why is it better to have well-organized data in tables you create?

	it is easier to see any potential qualitative relationships
	it makes it so you don't need to calculate the line of best fit
	it proves your hypothesis without doing any analysis
	it prevents you from having to put your data into a graph

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