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anzhelika [568]

3 years ago

13

two cars are traveling in opposite directions on the thruway. car a is traveling at 55mi/h and car b is traveling at 70 mi/h the

distance between them are 12 miles how long will it take for the two cars to pass one another

1 answer:

Tresset [83]3 years ago

3 0

a minute or less than a minute

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In an incompressible three-dimensional flow field, the velocity components are given by u = ax + byz; υ = cy + dxz. Determine th

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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...

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Give a real-world example of how energy is transformed from electrical energy to thermal energy. Describe how the heat can be tr

timofeeve [1]

Answer:

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Car

Lightbulb is a really good one

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2 years ago

One beam of electrons moves at right angles to a magnetic field. the force on these electrons is 4.9 x 10-14 newtons. a second b

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Below are the choices that can be found elsewhere:

A. (4.9 × 10-14 newtons) · tan(30°)
<span>B. (4.9 × 10-14 newtons) · sin(30°) </span>
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<span>D. (4.9 × 10-14 newtons) · arctan(30°) </span>
<span>E. (4.9 × 10-14 newtons) · arccos(30°)
</span>
<span>Force is proportional to the angle made by the velocity with respect to the magnetic field. It is maximum when velocity is perpendicular to the magnetic field and minimum when the velocity is parallel to the magnetic field. It is proportional to sin of the angle. In this problem it will be proportional to sin(30)</span>

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Professor Sanchez believes that children acquire language through reinforcement from adults, especially their parents. He believ

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The sine ratio is the ratio formed by the hypotenuse over the side opposite the acute angle. True False

Paha777 [63]

Answer:False

Explanation:

The given statement is false

because the sine ratio is the ratio formed by the side opposite the acute angle to the hypotenuse

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