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Exam (elaborations)

PSC 1121 Midterm || Questions and 100% Accurate Answers.

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The steps of the scientific method correct answers 1. Observe - ask questions / gather info 2. Hypothesis - identify variables / explain observation / formula 3. Experiment - test predications / check reproducibility 4. Conclude - collect data / accept or deny as theory Occam's razor corre...

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  • September 27, 2024
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PSC 1121 Midterm || Questions and 100% Accurate
Answers.
The steps of the scientific method correct answers 1. Observe - ask questions / gather info
2. Hypothesis - identify variables / explain observation / formula
3. Experiment - test predications / check reproducibility
4. Conclude - collect data / accept or deny as theory

Occam's razor correct answers If 2 different hypotheses explain the same phenomenon, the one
with fewer assumptions is the accepted hypothesis

Pseudoscience correct answers theory of creationism (not tested, not a real theory)

Scale correct answers method of estimating/measuring size and distance - compare to standard

Power of 10 correct answers scale of our universe (very large and very small numbers) helps
with precision of significant figures, we can write the number in scientific notation to make it
clear.
Example; 6370000 = 6.37 x 106

Order-of-magnitude correct answers (less than 5 = 1, greater than 5=10)
Example; 4.3279 x 106
= 4.328 x 106
= 1 x 106

Metric system (signify the power of 10) 3 base units correct answers 1. Length - meter (m)
2. Time - seconds (s)
3. Mass - kilogram (kg)

Scalar correct answers - quantities tat are fully described by magnitude (numerical value) alone

Distance "how much ground an object covered"

Speed "how fast"

Vectors correct answers described by magnitude and direction
Displacement "how far out of place an object is"
Velocity "direction of motion as well as how fast"
Magnitude - change in speed or direction
Acceleration "rate of change in velocity"
Force
Momentum

Average speed - distance traveled / time of travel correct answers S = d / t

Instantaneous speed correct answers how fast @ a given instant

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