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Gekata [30.6K]
4 years ago
7

In this relationship, the barnacles derive benefit. There is not benefit or harm to the whale. This relationship is an example o

f
Physics
2 answers:
raketka [301]4 years ago
7 0

Answer:

Commensalism

Explanation:

In nature, there are many kinds of relationships that are formed between animals and plants. These relationships are given certain names, depending on if both species benefit, or one benefits and the other suffers, or if they both are unaffected, one example of a relationship found in nature is called commensalism.

Commensalism is a kind of relationship that is seen between whales and the barnacles that are attached to them. In this relationship, the barnacles benefit greatly because, as the whale swims through the ocean, the barnacle constantly is exposed to a fresh source of nutrition. The whale however, is unaffected by having the barnacle attached to it.

klio [65]4 years ago
4 0
Commensalism: only one species benefits while the other is neither helped nor
harmed
so the relationship is Commensalism
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madam [21]

Answer:

779.87 N/m²

Explanation:

Pressure = Force (F) / Area (A)

Recall :

Force = ma ; mass * acceleration due to gravity

a = 9.8 m/s² ; mass = 0.4kg

Force, F = 0.4 * 9.8 = 3.92 N

Area = πr² ; r = Radius = 4cm = 4 / 100 = 0.04 m

Area = π0.04² = 0.0050265 m²

Hence,

Pressure = 3.92 / 0.0050265

Pressure = 779.86670 N/m²

Pressure = 779.87 N/m²

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3 years ago
A student uses a spring loaded launcher to launch a marble vertically in the air. The mass of the marble is
GarryVolchara [31]

Answer:

Part a)

When spring compressed by 2 cm

H = 1.47 m

Part b)

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H = 5.94 m

Explanation:

Part a)

As we know that the spring is compressed and released

so here spring potential energy is converted into gravitational potential energy at its maximum height

So we will have

\frac{1}{2}kx^2 = mg(H + x)

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so we have

H = 1.47 m

Part b)

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