HESI A2 Physics Quizlet

Correct Answer: B

Rationale: The correct answer is B: Momentum. Momentum is not considered a fundamental energy type because it is a property of moving objects, not a form of energy itself. Thermal energy (A), sound energy (C), and chemical energy (D) are all fundamental energy types as they represent different forms of energy that can be converted into other forms. Thermal energy is the internal energy of an object due to its temperature, sound energy is caused by vibrations in a medium, and chemical energy is stored in the bonds of chemical compounds. Momentum, on the other hand, is a measure of an object's mass and velocity, not a distinct form of energy.

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: C

Rationale: Failed to generate a rationale after 5 retries.

Correct Answer: A

Rationale: The correct answer is A because density is calculated by dividing mass by volume. For block A, density = 6.5g/16.25cm3 = 0.4 g/cm3. To determine the density of other blocks: B = 80g/32cm3 = 2.5 g/cm3, C = 48g/22cm3 = 2.18 g/cm3, D = 100g/250cm3 = 0.4 g/cm3. Since block A and D have the same density of 0.4 g/cm3, block A is the correct answer. Block B and C have higher densities, so they are incorrect choices.

Correct Answer: D

Rationale: Surface tension is the result of cohesive forces between liquid molecules at the surface, creating a net inward force. When a small object floats on the liquid surface, the surface tension exerts a restoring force towards equilibrium, keeping the object stable. This force pulls the object back towards the liquid surface if it is displaced. This is why choice D, "Restoring force towards equilibrium," is the correct answer. Choices A, B, and C are incorrect. Buoyant force (A) acts on objects immersed in a fluid, not on objects floating on the surface. Pressure difference (B) would not cause sinking of a floating object. Drag force (C) is a resistance force that opposes motion, not related to surface tension in this context.