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2 years ago

What does a animal and a plant cell have in common.

Physics

2 answers:

Allushta [10]2 years ago

8 0

Answer:

Structures that are common to plant and animal cells are the cell membrane, nucleus, mitochondria, and vacuoles. Structures that are specific to plants are the cell wall and chloroplasts.

Explanation:

if correct plzz brainliest :D

expeople1 [14]2 years ago

3 0

Answer:

Nucleus, cell membrane, cytoplasm and mitochondria

Explanation: They both have these 4 components, which is what they have in common.

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Pelicans tuck their wings and free-fall straight down whei} diving for fish. Suppose a pelican starts its dive from q height of

Dominik [7]

Answer:

3.3 m

Explanation:

t = Time taken

u = Initial velocity

v = Final velocity

s = Displacement

a = Acceleration due to gravity = 9.81 m/s²

$v^2-u^2=2as\\\Rightarrow v=\sqrt{2as+u^2}\\\Rightarrow v=\sqrt{2\times 9.81\times 16+0^2}\\\Rightarrow v=17.72\ m/s$

$v=u+at\\\Rightarrow 17.72=0+9.81\times t\\\Rightarrow \frac{17.72}{9.81}=t\\\Rightarrow t=1.81 \s$

The fish needs to see the pelican before 0.2 seconds in order to escape so the time pelican has is 1.81-0.2=1.61 seconds

In that time the pelican would have traveled

$s=ut+\frac{1}{2}at^2\\\Rightarrow s=0\times 1.61+\frac{1}{2}\times 9.81\times 1.61^2\\\Rightarrow s=12.71\ m$

So, the pelican would be 16-12.71 = 3.3 m above the water.

6 0

3 years ago

Find the westward component of a resultant vector 85.42 unit, 23 degrees W of N

Sindrei [870]

Since the angle is West of North, therefore to find for the westward component (horizontal component) of the vector, we use the sin function:

sin θ = opposite side / hypotenuse = westward component / resultant vector

So the westward component (x) is:

x = 85.42 sin 23

5 0

3 years ago

A copper cylinder has a mass of 76.8 g and a specific heat of 0.092 cal/g.C. It is heated to 86.5 degrees C from 19.5 degrees C.

Sladkaya [172]

Given:

The mass of the copper cylinder is: m = 76.8 g = 0.0768 kg

The change in the temperature is: T = 86.5 deg C - 19.5 deg C = 67 deg C

The specific heat is: c = 0.092 cal/g.C

To find:

Heat energy needed to heat the copper cylinder.

Explanation:

The specific heat is defined as the amount of heat energy needed to raise the temperature of a substance by one degree celcius.

The expression relating heat Q, mass m, specific heat c and temperature difference T is:

$Q=mcT$

Substitute the values in the above equation, we get:

$\begin{gathered} Q=76.8\text{ g}\times0.092\text{ Cal/g.C}\times67\text{ deg C} \\ \\ Q=473.40\text{ Cal} \end{gathered}$

Final answer:

473.40 calories of heat is required to heat the copper cylinder.

6 0

1 year ago

If a cart is accelerating downhill under a net force of 25 N, what additional force would cause the cart to have a constant velo

Vladimir [108]

No additional force is required because it's already going downhill

7 0

3 years ago

Jump to Question: Which of these is not required for current to flow through a conductor? A. Source of electrical current B. Som

amid [387]

I believe it is D. something with air molecules

7 0

4 years ago

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