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ycow [4]
3 years ago
12

How do animals get the nitrogen they need​

Physics
2 answers:
Alenkinab [10]3 years ago
4 0

Answer:

Animals get the nitrogen they need by eating plants or other animals that contain nitrogen.

Explanation:

iren [92.7K]3 years ago
3 0

Answer:

They eat plants or other animals that contains nitrogen

Explanation:

Animals get the nitrogen they need by eating plants or other animals that contain nitrogen. When organisms die, their bodies decompose bringing the nitrogen into soil on land or into ocean water. Bacteria alter the nitrogen into a form that plants are able to use.

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The titanium shell of an SR-71 airplane would expand when flying at a speed exceeding 3 times the speed of sound. If the skin of
Fed [463]

Answer:

The 10-meter long rod of an SR-71 airplane expands 0.02 meters (2 centimeters) when plane flies at 3 times the speed of sound.

Explanation:

From Physics we get that expansion of the rod portion is found by this formula:

\Delta l = \alpha\cdot l_{o}\cdot (T_{f}-T_{o}) (Eq. 1)

Where:

\Delta l - Expansion of the rod portion, measured in meters.

\alpha - Linear coefficient of expansion for titanium, measured in \frac{1}{^{\circ}C}.

l_{o} - Initial length of the rod portion, measured in meters.

T_{o} - Initial temperature of the rod portion, measured in Celsius.

T_{f} - Final temperature of the rod portion, measured in Celsius.

If we know that \alpha = 5\times 10^{-6}\,\frac{1}{^{\circ}C}, l_{o} = 10\,m, T_{o} = 0\,^{\circ}C and T_{f} = 400\,^{\circ}C, the expansion experimented by the rod portion is:

\Delta l = \left(5\times 10^{-6}\,\frac{1}{^{\circ}C} \right)\cdot (10\,m)\cdot (400\,^{\circ}C-0\,^{\circ}C)

\Delta l = 0.02\,m

The 10-meter long rod of an SR-71 airplane expands 0.02 meters (2 centimeters) when plane flies at 3 times the speed of sound.

4 0
3 years ago
In an incompressible three-dimensional flow field, the velocity components are given by u = ax + byz; υ = cy + dxz. Determine th
Ksivusya [100]

An incompressible flow field F in a 3D cartesian grid with components u,v,w:

F = u + v + w

where u,v,w are functions of x,y,z

Must satisfy:

∇·F = du/dx + dv/dy + dw/dz = 0

We have a field F defined:

F = u+v+w, u = ax+byz, v = cy+dxz

du/dx = a, dv/dy = c

Recall ∇·F = 0:

∇·F = du/dx + dv/dy + dw/dz = 0

a + c + dw/dz = 0

dw/dz = -a-c

Solve for w by separation of variables:

w = ∫(-a-c)dz

w = -az - cz + f(x,y)

f(x,y) is some undetermined function of x and y

The question states that w is not a function of x and y, therefore f(x,y) = 0...

w = -az - cz

8 0
3 years ago
What is solar thermal energy used to do—heat homes or power homes?
cluponka [151]

Answer:

A

Explanation:

7 0
4 years ago
Which region of the country would be considered the most heavily religious
fgiga [73]

i would guess the national religon

8 0
4 years ago
If 400g is 1kg find the ratio in the simplest form​
uranmaximum [27]

2:5

Explanation:

400g : 1kg

400g: 1000g

4 : 10

2 : 5

6 0
3 years ago
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