HESI Exams Quizlet Physics

Correct Answer: A

Rationale: The correct answer is A: a compression. Transverse waves move perpendicular to the direction of the wave motion, so they do not have compressions, which are characteristic of longitudinal waves. Transverse waves have an amplitude (maximum displacement of the wave), a frequency (number of wave cycles per unit time), and a wavelength (distance between two consecutive wave peaks). Therefore, choice A is the correct answer as it is the only characteristic that transverse waves do not possess. Choices B, C, and D are incorrect because they are all characteristics of transverse waves.

Correct Answer: C

Rationale: Failed to generate a rationale after 5 retries.

Correct Answer: B

Rationale: The drag force experienced by an object moving through a fluid depends on fluid properties (like viscosity and density) and object velocity. This is because the resistance encountered by the object is influenced by how easily the fluid can flow around it and the speed at which it moves through the fluid. The shape and size of the object can affect the drag force, but they are not the only factors determining it. The depth of submersion primarily affects buoyancy, not drag force. The buoyant force acting on the object is related to its weight and the density of the fluid, but it does not directly determine the drag force experienced by the object.

Correct Answer: D

Rationale: The correct answer is D: Dry ice. Dry ice is solid carbon dioxide that sublimes directly into carbon dioxide gas without melting into a liquid state. This process can be observed in everyday situations, such as when dry ice "evaporates" in a cooler. Iron (A) and Silver (B) do not undergo sublimation but instead melt into liquid phases. Salt crystal (C) also melts into a liquid (brine solution) before evaporating.

Correct Answer: C

Rationale: When a charged particle moves through a vacuum at a constant speed, it generates both an electric and magnetic field. This phenomenon is described by Maxwell's equations in electromagnetism. The moving charge creates a changing electric field which, in turn, induces a magnetic field according to Faraday's law of electromagnetic induction. This interplay between electric and magnetic fields is fundamental to electromagnetism. Choice A is incorrect as the moving charge does not only generate an electric field. Choice B is incorrect because the moving charge does not only generate a magnetic field. Choice D is incorrect because a moving charged particle always generates both electric and magnetic fields due to the fundamental principles of electromagnetism.