ATI TEAS 7
physics
1. How does an increase in surface area affect the force of friction between two surfaces?
- A. Increases friction
- B. Decreases friction
- C. Has no effect on friction
- D. Causes unpredictable changes in friction
Correct answer: b
Rationale: Increasing surface area reduces the force per unit area, decreasing friction.
2. A children's toy consists of a half cylinder (diameter 10cm, height 8cm) attached to a cube with side lengths of 5cm. What is the total volume of the toy?
- A. 125 cu cm
- B. 200 cu cm
- C. 275 cu cm
- D. 350 cu cm
Correct answer: C
Rationale: Calculate the volume of the half cylinder and the cube separately, then add them up.
3. What is the difference between a pure substance and a mixture?
- A. Pure substances have fixed composition, mixtures don't.
- B. Mixtures have fixed composition, pure substances don't
- C. Pure substances are always solids, mixtures can be any state
- D. Pure substances are always elements, mixtures are always compounds
Correct answer: A
Rationale: Rationale: - Pure substances have a definite and constant composition, meaning they are made up of only one type of atom or molecule. This composition does not vary. - Mixtures, on the other hand, are composed of two or more substances physically combined. The components of a mixture can be present in varying proportions, leading to a variable composition. - Option A correctly distinguishes between pure substances and mixtures based on the fixed composition of pure substances and the variable composition of mixtures.
4. What is the term for the process of separating the components of a solution based on their different rates of movement through a medium?
- A. Filtration
- B. Distillation
- C. Chromatography
- D. Precipitation
Correct answer: c
Rationale: Chromatography is a technique used to separate the components of a solution based on their different rates of movement through a medium. The other choices are different separation techniques.
5. As a young manager, she knows that conflict occurs in any organization. Which of the
- A. Can be destructive if the level is too high
- B. Is not beneficial; hence it should be prevented at all times
- C. May result in poor performance
- D.
Correct answer: C
Rationale: Conflict in an organization is a natural occurrence that can either be constructive or destructive. Option C is the correct answer because conflict may indeed lead to poor performance if not managed effectively. When conflict is left unresolved or unaddressed, it can create tension, decrease morale, and hinder productivity. By recognizing that conflict can impact performance, the young manager can take proactive steps to address and resolve conflicts in a constructive manner to minimize its negative effects and promote a healthy work environment.
6. What is the difference between constructive and destructive interference of waves?
- A. They have the same effect on wave amplitude.
- B. Constructive interference increases amplitude, while destructive interference decreases it.
- C. They only affect light waves, not sound waves.
- D. They depend on wave speed, not amplitude.
Correct answer: B
Rationale: Constructive interference occurs when peaks of two waves overlap, resulting in a higher combined amplitude. Destructive interference happens when peaks and troughs overlap, cancelling each other out and reducing the overall amplitude.
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