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Nursing Elites

ATI TEAS 7

physics

1. How does the potential energy of an object change when it is compressed?

Correct answer: b

Rationale: When an object is compressed, it stores potential energy due to its altered position or configuration.

2. What happens to the acceleration of an object when the force acting on it is increased, assuming the mass remains constant?

Correct answer: a

Rationale: According to Newton's second law (F = ma), if mass is constant and force increases, acceleration also increases.

3. What is the relationship between work and kinetic energy?

Correct answer: a

Rationale: Work done on an object can change its kinetic energy, either increasing or decreasing it.

4. What property of a substance refers to its ability to be drawn into thin wires?

Correct answer: b

Rationale: Ductility refers to a substance's ability to be drawn into thin wires without breaking.

5. During inhalation, which muscle contracts to increase the volume of the thoracic cavity, allowing air to flow into the lungs?

Correct answer: A

Rationale: The correct answer is A: Diaphragm. During inhalation, the diaphragm contracts and moves downward, increasing the volume of the thoracic cavity. This action creates a pressure difference between the lungs and the atmosphere, causing air to flow into the lungs. The intercostal muscles also play a role by expanding the ribcage, but the primary muscle responsible for increasing thoracic cavity volume during inhalation is the diaphragm. Abdominal muscles are involved in exhalation by contracting to push the diaphragm up, reducing thoracic cavity volume. Pectoral muscles are located in the chest and are not directly involved in the breathing process.

6. Which of the following is NOT a property of a catalyst?

Correct answer: D

Rationale: A catalyst is a substance that increases the rate of a chemical reaction without being consumed in the process. It remains unchanged after the reaction, which eliminates option B. A catalyst works by lowering the activation energy required for the reaction to occur, which eliminates option C. A catalyst does not create new products in a reaction; it only facilitates the conversion of reactants into products more efficiently. Therefore, option D is NOT a property of a catalyst.

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