Nursing Elites

1. What do Newton's rings visually demonstrate?

• A. Diffraction
• B. Doppler effect
• C. Polarization
• D. Thin-film interference

Correct answer: D

Rationale: Newton's rings are a series of concentric colored rings observed when light is reflected between a spherical surface and a flat surface. This phenomenon is a result of thin-film interference, where light waves reflecting off the two surfaces interfere with each other constructively or destructively, leading to the observed pattern of rings. Diffraction, polarization, and the Doppler effect are not related to the specific phenomenon of Newton's rings. Diffraction refers to the bending of waves around obstacles, polarization deals with the orientation of electromagnetic waves, and the Doppler effect relates to the change in frequency of waves due to motion. Therefore, the correct answer is thin-film interference, as it precisely describes the phenomenon observed in Newton's rings.

2. Which of the following structures is responsible for producing insulin?

• A. Liver
• B. Pancreas
• C. Gallbladder
• D. Spleen

Correct answer: B

Rationale: The correct answer is B: Pancreas. The pancreas is the organ responsible for producing insulin. Insulin is a hormone that helps regulate blood sugar levels by allowing cells to take in glucose from the bloodstream. The liver (choice A) plays a role in regulating blood sugar levels through glycogen storage and release but does not produce insulin. The gallbladder (choice C) stores bile produced by the liver to aid in digestion and has no direct involvement in insulin production. The spleen (choice D) is involved in immune function and blood storage but not in the production of insulin.

3. The realtor showed __________ and __________ a house on Wednesday afternoon. Which of the following pronoun pairs should be used in the blanks above?

• A. She, I
• B. She, me
• C. Me, her
• D. Her, me

Correct answer: D

Rationale: In the sentence, 'The realtor showed her and me a house on Wednesday afternoon,' the pronouns 'her' and 'me' are used as objects of the verb 'showed.' When choosing pronouns to fill in the blanks, it is important to use objective pronouns to maintain correct grammar and sentence structure. Choice A ('She, I') and Choice B ('She, me') are incorrect as 'I' and 'she' are subjective pronouns, not objective pronouns needed as objects in this sentence. Choice C ('Me, her') is also incorrect as the order and usage of pronouns are reversed from the correct form in the sentence.

4. Which detail from the passage best supports the conclusion that the little girl is no older than three years old?

• A. For lunch, she likes ham and cheese (torn into bites), yogurt, raisins, applesauce, peanut butter sandwiches in the fridge drawer, or any combo of these.
• B. It’s fine if you want to go somewhere, just leave us a note of where you are.
• C. As for nap, try after lunch. She may not sleep, but try anyway.
• D. Turn on music in her room, leave her in her crib with a dry diaper and bottle to try to sleep.

Correct answer: D

Rationale: The detail from choice D, 'Turn on music in her room, leave her in her crib with a dry diaper and bottle to try to sleep,' best supports the conclusion that the little girl is no older than three years old. This detail suggests that the child is still using a crib for sleeping, a common practice for infants and toddlers. Additionally, the mention of a bottle indicates that the child is likely young, as older children typically do not use bottles for sleep. Choices A, B, and C do not provide specific details related to the child's age like the mention of a crib and a bottle does in choice D.

5. Which element is used in semiconductors like computer chips and solar panels?

• A. Germanium
• B. Silicon
• C. Gallium
• D. Arsenic

Correct answer: B

Rationale: Silicon is the correct answer. Silicon is widely used in semiconductors for electronic applications because of its unique properties that allow it to be manipulated to conduct or not conduct electricity effectively. Germanium is also used in semiconductors but to a lesser extent compared to silicon. Gallium and arsenic are not as commonly used in semiconductors like computer chips and solar panels, making them incorrect choices for this question.

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