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3 years ago

Sayyid drew a diagram to compare the gravitational and

Biology

2 answers:

qaws [65]3 years ago

7 0

Answer:

Explanation:

Jlenok [28]3 years ago

5 0

Gravitational: A.is attractive only

Electromagnetic: C.attracts and repels

Both: D.has an infinite range

Explanation:

The two forces mentioned in this problem are:

- Gravitational force: this force is the force that is exerted between any object with mass. The magnitude of the force is given by

$F=G\frac{m_1 m_2}{r^2}$

where

G is the gravitational constant

m1 and m2 are the masses of the two objects

r is the distance between the objects

This force is always attractive and it has an infinite range.

- Electromagnetic force: this is the force exerted between electrically charged objects. The magnitude of the force is given by

$F=k\frac{q_1 q_2}{r^2}$

where

k is the Coulomb's constant

q1 and q2 are the charges of the two objects

r is the distance between them

This force is attractive when the charges have opposite sign and repulsive when they have the same sign. It also has an infinite range.

Therefore, we can conclude that:

Gravitational: A.is attractive only

Electromagnetic: C.attracts and repels

Both: D.has an infinite range

Learn more about gravitational and electromagnetic force:

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brainly.com/question/12785992

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brainly.com/question/4273177

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Name four groups of organic compounds found in living things.

Margarita [4]

Answer:

•Protiens

•Nucleic Acids

•Lipids

•Carbohydrates

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3 years ago

Which of the following features did whales possibly inherit from a four-legged ancestor?

pishuonlain [190]

Answer:

2. Hip bones

Explanation:

More than 40 million years ago, whales had ancestors who walked on land. Even now, they have a feature they inherited from them - hip bones. Scientists used to think that they are vestigial, i.e. that they lost their function. However, recently they discovered that these bones help whales (and other marine mammals who have them, such as dolphins) maneuver better mating.

Whales developed the rest of the listed features later, when they became marine animals. This is why they are incorrect.

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2 years ago

How do the circulatory and respiratory system interact to provide muscle cells with oxygen during a long distance race?

Orlov [11]

Answer:

Humans—and other complex multicellular organisms—have systems of organs that work together, carrying out processes that keep us alive.

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The function of an organ system depends on the integrated activity of its organs. For instance, digestive system organs cooperate to process food.

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Explanation:Goblet cell in your respiratory epithelium of trachea.

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3 years ago

Describe the relationship between fatty acid chain length, saturation, and the melting point or fluidity of fatty acids.

Advocard [28]

Answer:

Because double bonds cause the hydrocarbon chain to bend. Therefore, the fatty acids cannot compact tightly together, reducing the van der Waals interaction between the fatty acids. The melting point of fatty acids is also affected by chain length. The longer the hydrocarbon chain is, the higher the melting point.

Explanation:

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3 years ago

Ape species began to dwindle during the Miocene, leaving only a few remaining: a situation that exists up to the present. It is

fiasKO [112]

The change in weather pattern caused forest to become sparse and hot weather caused the reduction of apes as they had less food and difficulty in surviving the climate.

Explanation:

In Miocene epoch volcanic mountain chains were created in Central Africa which abruptly changed the local weather.

The sea-level got drop due to global cooling of that time.

This resulted in continental drift making land connection of Africa with Eurasia.

The primates started migrating through this route.

The African forest become dry causing selective pressures in primates.

The cooler climate in Eurasia caused extinction and migration of primates to Africa in late Miocene epoch.

The hot and humid climate and less woodland caused a reduction in number of apes which were replaced by modern world monkeys.

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3 years ago