Một vật được ném xiên lên từ đỉnh của một tòa nhà cao 20m với góc 600 so với phương ngang, tốc độ ban đầu là 10m/s. Xác định độ cao cực đại của vật so với mặt đất?

Explanation:

7 0

2 years ago

Which of the following statements is accurate? A. Compressions and rarefactions occur throughout a transverse wave. B. The wavel

Eduardwww [97]

<h3>Answer;</h3>

B. The wavelength of both transverse and longitudinal waves is measured parallel to the direction of the travel of the wave.

<h3>Explanation;</h3>

Longitudinal waves are waves in which the vibration of particles is parallel to the direction of the wave motion. The vibration of particles generates regions known as compressions and rarefactions. Therefore the wavelength is the distance between two successive rarefactions or compressions.

Transverse waves on the other hand are those waves in which the vibration of particles is perpendicular to the direction of the wave motion. The vibration of particles generates regions of maximum displacement called crests and regions of minimum displacement called troughs. Thus, the wavelength is the distance between two successive crests or troughs.

4 0

3 years ago

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Explain the reason behind why geographers believe the Malthusian theory is not true

g100num [7]

Answer:

Malthus objection was that the pressure of increasing population on the food supply would destroy perfection and there would be misery in the world.

Malthus was severely criticized for his pessimistic views,which led him to travel to the continent of europe to gather data in support of his thesis

6 0

3 years ago