HESI A2
HESI Exams Quizlet Physics
1. The drag force (F_d) experienced by an object moving through a fluid depends on:
- A. Object's shape and size only
- B. Fluid properties and object velocity
- C. Depth of submersion only
- D. Buoyant force acting on the object
Correct answer: B
Rationale: The drag force experienced by an object moving through a fluid depends on multiple factors, including the object's shape, size, velocity, and the fluid's properties such as viscosity and density. Choices A, C, and D are incorrect because drag force is not solely determined by the object's shape and size, depth of submersion, or buoyant force acting on the object. The primary factors affecting drag force are the fluid properties and the object's velocity. Therefore, the correct answer is B.
2. In the number 743.25, which digit represents the tenths place?
- A. 3
- B. 4
- C. 2
- D. 5
Correct answer: C
Rationale: In the number 743.25, the tenths place is the first digit to the right of the decimal point, which is 2. Therefore, the correct answer is C. Choice A (3) represents the hundredths place, choice B (4) represents the units place, and choice D (5) represents the hundredths place.
3. What is the best description for the term euphoric?
- A. Disease-ridden
- B. High-spirited
- C. Pretentious
- D. Understated
Correct answer: B
Rationale: The term euphoric is best described as high-spirited. Euphoria is a feeling of intense happiness and excitement, so high-spirited accurately conveys the meaning of euphoric. Choices A, C, and D do not capture the essence of euphoria. 'Disease-ridden' has a negative connotation and is unrelated to euphoric. 'Pretentious' means attempting to impress by affecting greater importance, talent, culture, etc., than is actually possessed, which is not synonymous with euphoric. 'Understated' means presented or expressed in a subtle and effective way, which is not the meaning of euphoric.
4. Which word names an infected swelling with liquid inside?
- A. Blast
- B. Gash
- C. Hive
- D. Boil
Correct answer: D
Rationale: A boil is an infected swelling on the skin filled with pus, which is a type of liquid. It is typically caused by a bacterial infection in a hair follicle or oil gland. The other options, blast, gash, and hive, do not specifically describe an infected swelling with liquid inside like a boil does. A 'blast' is a sudden strong movement or gust, 'gash' refers to a long, deep cut or wound, and 'hive' is a skin reaction characterized by itchy welts.
5. What is the function of the pituitary gland?
- A. Regulating metabolism
- B. Producing bile
- C. Filtering blood
- D. Controlling muscle movement
Correct answer: A
Rationale: The pituitary gland, known as the 'master gland,' plays a crucial role in regulating various physiological processes by secreting hormones that control other endocrine glands. This includes the regulation of metabolism, growth, reproduction, stress response, and more. Therefore, the correct function of the pituitary gland is regulating metabolism, making choice A the correct answer. Choices B, C, and D are incorrect as the pituitary gland is not involved in producing bile, filtering blood, or controlling muscle movement.
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