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ElenaW [278]
4 years ago
6

What are three different catapult ? And definition?

Physics
2 answers:
babymother [125]4 years ago
6 0

Answer:

1. Ballista, 2.Mangonel, 3.Trebuchet

definition: a forked stick with an elastic band fastened to the two prongs, used by children for shooting small stones; a slingshot.

Explanation:

The main types of catapults used were the trebuchet, mangonel, onager, and ballista.

scoundrel [369]4 years ago
5 0

Answer:

1. Ballista

2. Mangonel

3. Trebuchet

Definitions:

1. a catapult used in ancient warfare for hurling large stones.

2. a military device for throwing stones and other missiles.

3. a machine used in medieval siege warfare for hurling large stones or other missiles.

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Light can be seen by the human eye
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4 years ago
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Discuss two components that are essential to the functioning of the ecosystem.
Gre4nikov [31]

Answer:

The two components are biotic and abiotic components

Explanation:

The two components essential for the functioning of the ecosystem are:

Biotic Components:

These are the organic components like plants, pathogens, animals, human beings and other living components in the ecosystem that affects other living organisms, influences them and helps in shaping the ecosystem.

they require desired amount of nutrition and energy and energy for proper everyday functioning.

They are further classified as Producers, decomposers and consumers out of which producers prepare their own food by photosynthesis where consumers fulfills their requirement from producers and decomposers depend s on both producers and consumers for chemical breakdown into simpler and reusable forms.

Abiotic Components:

These are the inorganic components of the ecosystem like humidity, temperature, etc.

These are the non living components of the ecosystem which includes physical and chemical constituents of the environment which influences the biotic components and the ecosystem's functioning.

The abiotic components influences certain behaviors in living organisms like reproduction, growth, etc.

These components are synthesized by the process of photosynthesis by utilizing sunlight to convert these into organic compounds by primary producers which are further are the consumption of secondary producers thus increasing the organic content.

6 0
3 years ago
How many milliliters of water at 25.0°C with a density of 0.997 g/mL must be mixed with 162 mL of coffee at 94.6°C so that the r
Andre45 [30]

Answer:

The volume of water is 139 mL.

Explanation:

Due to the Law of conservation of energy, the heat lost by coffee is equal to the heat gained by the water, that is, the sum of heats is equal to zero.

Q_{coffee} + Q_{water} = 0\\Q_{coffee} = - Q_{water}

The heat (Q) can be calculated using the following expression:

Q=c \times m \times \Delta T

where,

c is the specific heat of each substance

m is the mass of each substance

ΔT is the difference in temperature for each substance

The mass of coffee is:

162mL.\frac{0.997g}{mL} = 162g

Then,

Q_{coffee} = - Q_{water}\\c_{c} \times m_{c} \times \Delta T_{c} = -c_{w} \times m_{w} \times \Delta T_{w}\\m_{c} \times \Delta T_{c} = -m_{w} \times \Delta T_{w}\\m_{w} = \frac{m_{c} \times \Delta T_{c}}{-\Delta T_{w}} \\m_{w}=\frac{162g \times (62.5 \°C - 94.6 \°C ) }{-(62.5 \°C - 25.0 \°C)} \\m_{w} = 139 g

The volume of water is:

139g.\frac{1mL}{0.997g} =139mL

7 0
4 years ago
What does gravity, electricity, and magnesium have in common?
Ghella [55]

Answer:

magnesium (Mg), chemical element, one of the alkaline-earth metals of Group 2 (IIa) of the periodic table, and the lightest structural metal. Its compounds are widely used in construction and medicine, and magnesium is one of the elements essential to all cellular life.

Explanation:

hope it helps

4 0
2 years ago
The force of replusion between two like charged particles will increase if​
Alex_Xolod [135]

Answer:

The distance of separation is decreased

Explanation:

From Cuolomb's law, we know that the strength of charge is inversely proportional to the distance of separation between the charges. To mean that increasing the distance let's say from 2m to 3 m would mean initial strength getting form 1/4 to 1/9 which is a decrease. The vice versa is true hence the force of repulsion can increase only when we decrease the distance of separation.

7 0
3 years ago
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