A spectrum for a given element is unique for that element. why is that so?

1 answer:

5 0

The correct answer is B.
The electrons deal with most of the spectrum emissions. Whilst mass is technically a factor, the more precise answer would be B.

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Wave is a periodic (1) __________ that moves away from a source which carries (2) __________ with it. Waves can be typified acco

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The correct answers to fill into the blank spaces are;

Wave is a periodic disturbance that moves away from a source which carries energy with it. Waves can be typified according to the direction of motion of the vibrating particles with respect to the direction in which the waves travel and according to medium .

Longitudinal waves vibrate perpendicularly to the direction in which the waves travel. This wave exhibits up and down motion. Longitudinal waves vibrate perpendicular or back and forth to the direction in which the waves travel.

Electromagnetic waves are combination of transverse and longitudinal waves. These move in a circular pattern as the waves pass by.

Mechanical waves need solid, liquid and gas medium to propagate or travel. Transverse, mechanical and surface waves are examples of mechanical waves.

Electromagnetic waves do not need medium to propagate. Radio waves, ultraviolet, infrared, and gamma rays are examples of electromagnetic waves. The nature of waves can be described through its terms, quantities and propagation.

The crust and trough refer to the highest point and lowest point of a wave pattern, respectively. The magnitude of a transverse wave is the maximum displacement of a particle of the medium on either side of its normal position when the wave passes. The frequency of periodic waves is the number of waves that pass a particular point for every one second while the Amplitude is the distance between adjacent crests or troughs.

The period is the time required for one complete wave to pass a particular point. The speed of the wave refers to the distance the wave travels per unit time. It is related to the frequency of the wave and wavelength through the following equation: wave speed= frequency x wavelength.

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Pollen grains land on the stigma and move down the pollen tube into the ovary.

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Which layer of soil is least likely to be penetrated by plant roots? a. O (organic matter) b. A (topsoil) c. B (subsoil) d. C (p

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Answer: d. C (parent rock)

Soil horizons are the layers lying parallel to the surface or subsurface layers of soil. These horizons are formed in the process of soil horizon. These sequence of soil horizons is collectively called as soil profile.

The layer or soil horizon, which is least likely to be penetrated by plant roots is C horizon. The C horizon is a layer of soil, which consists of huge aggregates of parent rocks, which are unweathered or partially weathered, lying deep in the bottom of the soil profile. It does not contain organic matter. Also, the texture of the soil is not fine, instead hard rocks are present. Therefore, this layer of soil cannot be penetrated by plant roots.

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Place the steps of the respiration process in the correct order.

faust18 [17]

1. Air enters the nostrils.

2. Air passes from the trachea to the bronchi

3. Air diffuses from the alveoli to the blood cells.

4. Oxygen enters the blood cells.

5. Blood transports oxygen to other cells.

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