HESI Exams Quizlet Physics

Correct Answer: C

Rationale: Failed to generate a rationale after 5 retries.

Correct Answer: B

Rationale: The correct answer is B: Water. Density is mass per unit volume. Water has the highest density among the options due to its relatively high mass compared to its volume. Mist (A) is a dispersion of water droplets in the air, which has lower density. Steam (C) is water vapor with lower density than liquid water. Ice (D) has lower density than liquid water because its molecules are more spread out in a solid state. Water's density is highest due to its compact molecular arrangement in its liquid form.

Correct Answer: A

Rationale: The correct answer is A: 10 m/s. Velocity is calculated by dividing the distance traveled by the time taken. In this case, velocity = 100m / 10s = 10 m/s. Choice B, 90 m/s, is incorrect because it is not the accurate calculation. Choice C, 110 m/s, and choice D, 1,000 m/s, are both incorrect as they do not align with the correct formula for calculating velocity. The key is to remember that velocity is a vector quantity that includes both speed and direction, and in this case, we are only concerned with the speed of the object, making choice A the correct answer.

Correct Answer: A

Rationale: To find the current drawn, use the formula: Current (I) = Power (P) / Voltage (V). Substituting the values: I = 60 watts / 110 volts = 0.55 amperes (A). This is the correct answer. Other choices are incorrect as they do not match the calculated value. B: 1.83A, C: 50A, D: 6,600A are all significantly different from the calculated current of 0.55A, thus not the correct answer.

Correct Answer: A

Rationale: Semiconductors fall between conductors and insulators in terms of electrical conductivity because they have conductivity levels higher than insulators but lower than conductors. Conductors have high conductivity due to abundant free electrons, while insulators have very low conductivity due to the lack of free electrons. Semiconductors can conduct electricity under certain conditions by manipulating the number of free electrons through doping or applying electric fields. Therefore, choice A is correct. Choices B, C, and D are incorrect because they do not accurately represent the conductivity levels of semiconductors in relation to other materials.