HESI A2 Physics Quizlet

Correct Answer: D

Rationale: The correct answer is D: Methane. Methane is a gas at room temperature and pressure, making it highly compressible. Gases have particles that are far apart, allowing them to be easily compressed when pressure is applied. Gold (A), water (B), and mercury (C) are all in liquid or solid form at room temperature and pressure, with particles closer together, making them less compressible compared to gases like methane.

Correct Answer: A

Rationale: As the frequency of a sound wave increases, its wavelength decreases because the speed of sound remains constant in a given medium. This is described by the formula speed = frequency x wavelength. Therefore, when frequency increases, wavelength must decrease to maintain a constant speed. Summary: Choice A is correct because frequency and wavelength are inversely proportional. Choices B, C, and D are incorrect as they do not follow the relationship between frequency and wavelength in a sound wave.

Correct Answer: D

Rationale: The correct answer is D: ∫ dQ/T ≤ 0. This is based on the Clausius inequality which states that for a cyclic process involving heat transfer at a constant temperature T, the integral of dQ/T must be less than or equal to zero. This inequality arises from the second law of thermodynamics, specifically stating that heat cannot spontaneously flow from a colder body to a hotter body. If the integral were greater than zero, it would imply a violation of this principle. The other choices are incorrect because they do not accurately represent the Clausius inequality or the relationship between heat transfer and temperature in a cyclic process. Choice A is incorrect as there is indeed a relationship between heat transfer and temperature. Choice B is incorrect as it should be ≤ 0, not ≥ 0. Choice C is incorrect as the integral of Q/T should not be constant for a cyclic process.

Correct Answer: D

Rationale: The correct answer is D: attraction. According to the right-hand rule for magnetic fields, when two long, parallel wires carry currents in the same direction, the magnetic fields produced by the currents will interact in a way that causes the wires to attract each other. This is because the magnetic field lines around each wire will form concentric circles and intersect with each other, leading to an attractive force between the wires. Choices A, B, and C are incorrect because the force between the wires in this scenario is not unpredictable, repulsion, or nonexistent; it is specifically an attractive force due to the interaction of the magnetic fields produced by the currents in the wires.

Correct Answer: C

Rationale: Failed to generate a rationale after 5 retries.