Ques:Q: What property is defined as the magnitude or size of displacement between two positions? Read this paragraph and choose the correct option from the provided answers: Distance Although displacement is described in terms of direction, distance is not. Distance is defined to be the magnitude or size of displacement between two positions. Note that the distance between two positions is not the same as the distance traveled between them. Distance traveled is the total length of the path traveled between two positions. Distance has no direction and, thus, no sign. For example, the distance the professor walks is 2.0 m. The distance the airplane passenger walks is 4.0 m. Misconception Alert: Distance Traveled vs. Magnitude of Displacement It is important to note that the distance traveled, however, can be greater than the magnitude of the displacement (by magnitude, we mean just the size of the displacement without regard to its direction; that is, just a number with a unit). For example, the professor could pace back and forth many times, perhaps walking a distance of 150 m during a lecture, yet still end up only 2.0 m to the right of her starting point. In this case her displacement would be +2.0 m, the magnitude of her displacement would be 2.0 m, but the distance she traveled would be 150 m. In kinematics we nearly always deal with displacement and magnitude of displacement, and almost never with distance traveled. One way to think about this is to assume you marked the start of the motion and the end of the motion. The displacement is simply the difference in the position of the two marks and is independent of the path taken in traveling between the two marks. The distance traveled, however, is the total length of the path taken between the two marks. Choices: - gravity - Distance - passing - distance A:

Ans:distance
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Ques:Q: What type of pressure may build up inside the cell when water moves into a cell by osmosis? Read this paragraph and choose the correct option from the provided answers: When water moves into a cell by osmosis, osmotic pressure may build up inside the cell. If a cell has a cell wall, the wall helps maintain the cell's water balance. Osmotic pressure is the main cause of support in many plants. When a plant cell is in a hypotonic environment, the osmotic entry of water raises the turgor pressure exerted against the cell wall until the pressure prevents more water from coming into the cell. At this point the plant cell is turgid ( Figure below ). The effects of osmotic pressures on plant cells are shown in Figure above . Choices: - pleasurable pressure - impervious pressure - transverse pressure - osmotic pressure A:

Ans:osmotic pressure
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Ques:Q: What is the term for the height of the wave? Read this paragraph and choose the correct option from the provided answers: (A) A wave consists of alternation crests and troughs. The wavelength () is defined as the distance between any two consecutive identical points on the waveform. The amplitude is the height of the wave. (B) A wave with a short wavelength (top) has a high frequency because more waves pass a given point in a certain amount of time. A wave with a longer wavelength (bottom) has a lower frequency. Choices: - magnitude - frequency - vibration - amplitude A:

Ans:amplitude
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Ques:Q: Narrowing of the arterioles causes an increase of what upstream in the arteries? Read this paragraph and choose the correct option from the provided answers: Choices: - white blood cells - heart beat - red blood cells - blood pressure A:

Ans:
blood pressure
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