Intro to Physics

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Questions and Answers

Which of the following best describes the primary goal of physics as a scientific discipline?

Understanding the fundamental laws and behavior of the universe. (correct)
Creating mathematical models to predict economic trends.
Developing new technologies for practical applications.
Classifying and cataloging all known elements and compounds.

If System A and System B are both in thermal equilibrium with System C, what can be concluded about the relationship between System A and System B?

System A and System B are in thermal equilibrium with each other. (correct)
System A and System B will have different temperatures.
System A and System B will exchange heat until one reaches absolute zero.
System A and System B are not in thermal equilibrium with each other.

Which of the following equations represents the relationship described by Newton's Second Law of Motion?

$E = mc^2$
$PV = nRT$
$V = IR$
$F = ma$ (correct)

Which of the following phenomena provides evidence for the wave nature of light?

Diffraction of light through a narrow slit. (B) Signup and view all the answers

According to special relativity, how does the observed length of an object change as its velocity approaches the speed of light, relative to a stationary observer?

The length decreases. (D) Signup and view all the answers

In nuclear physics, what is the process by which a heavy nucleus splits into two or more smaller nuclei?

Nuclear fission (D) Signup and view all the answers

Which area of physics is MOST concerned with the behavior of matter at extremely low temperatures and the properties of materials like superconductors?

Condensed Matter Physics (C) Signup and view all the answers

Which unit is NOT a base unit in the International System of Units (SI)?

Newton (A) Signup and view all the answers

Which of the following is an example of a scalar quantity?

Temperature (B) Signup and view all the answers

A car accelerates uniformly from rest to a velocity of 20 m/s in 5 seconds. What is the average acceleration of the car?

4 m/s² (B) Signup and view all the answers

A 2 kg object is lifted 3 meters vertically. What is the change in potential energy of the object?

58.8 J (C) Signup and view all the answers

Two objects collide. If the total kinetic energy of the system is conserved, what type of collision is it?

Elastic (D) Signup and view all the answers

Which of the following properties is NOT a characteristic of simple harmonic motion?

The amplitude decreases over time due to friction. (B) Signup and view all the answers

What type of wave is sound?

Longitudinal (B) Signup and view all the answers

Which of the following best describes the relationship between voltage (V), current (I), and resistance (R) in an electric circuit?

$V = IR$ (B) Signup and view all the answers

What happens to the equivalent resistance of a circuit as more resistors are added in parallel?

The equivalent resistance decreases. (D) Signup and view all the answers

Which of the following is a fundamental requirement for designing a good scientific experiment?

Having a clear hypothesis or research question. (B) Signup and view all the answers

Which skill is most crucial for interpreting data accurately in scientific investigations?

Statistical analysis (D) Signup and view all the answers

What is the primary purpose of using models and simulations in physics?

To explain and predict complex phenomena. (C) Signup and view all the answers

What is the SI unit for measuring luminous intensity?

Candela (B) Signup and view all the answers

Flashcards

What is Physics?

Study of matter, motion, energy, and force.

What is the Scientific Method?

A method of inquiry involving observation, hypothesis, and experimentation.