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Katarina [22]
3 years ago
8

For what values of θ are the magnitudes of the scalar product and the vector product equal? Express your answers in degrees usin

g three significant figures. Enter positive values from 0∘ to 180∘ in ascending order separated by a comma.
Physics
1 answer:
amm18123 years ago
6 0

Answer:

45°

Explanation:

Let there are two vectors, A and B. The angle between the two vectors is θ.

The dot product of two vectors is equal to the vector product of two vectors.

\left | \overrightarrow{A}.\overrightarrow{B} \right |=\left | \overrightarrow{A}\times \overrightarrow{B} \right |

A B cosθ = A B Sinθ

tan θ = 1

θ = 45°

Thus, the angle between the two vectors is 45°

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Calculate the volume that 42g of nitrogen gas (N2)occupies at standard temperature and pressure.​
luda_lava [24]

Nitrogen gas has a molar mass of about 28.0134 g/mol. Then we have a starting amount of

(42 g) / (28.0134 g/mol) ≈ 1.4993 mol

of N₂.

At standard temperature and pressure, one mole of an ideal gas occupies a volume of about 22.4 L. Then 42 g, or 1.4993 mol, of N₂ takes up

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8 0
3 years ago
3.
alexandr402 [8]

Answer:

1.92 m/s

Explanation:

Velocity is defined as the distance moved per unit time with consideration of the direction. The direction aspect differentiates speed from velocity since for speed, we don't need to consider the direction.

v=\frac {d}{t}

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v=\frac {2\pi r}{t}

Substituting 5.5 m for r and 18 s for t then

v=\frac {2\pi \times 5.5}{18}=1.919862177 m/s\approx 1.92 m/s

To the nearest hundredth, the velocity is 1.92 m/s

4 0
4 years ago
How is Newtons second law apply to the egg drop ?
kotykmax [81]

Answer:

Newton's Second Law is applied because of the acceleration caused by natural forces as the egg is plummeting to the earth. And the amount of acceleration the egg has will be largely affected by the amount of force Mr. Baker uses to hurl the egg to the ground.

Explanation:

hope that helps

3 0
3 years ago
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4. Medical Department

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4 0
3 years ago
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strojnjashka [21]
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