2 years ago

9- Under what circumstances would a vector have components that are equal in

Physics

1 answer:

valkas [14]2 years ago

6 0

Explanation:

c. if the vector is oriented at 0° from the X -axis.

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When have you experienced an increase in kinetic<br> energy within a system?

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Answer:

If a man starts running on a boat with an acceleration a with respect to the boat, there is no external force that acts on the Boat+Man system

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A elephant kicks a 5.0\,\text {kg}5.0kg5, point, 0, start text, k, g, end text stone with 150\,\text J150J150, start text, J, en

S_A_V [24]

The speed of the stone is 7.7 m/s

Explanation:

The kinetic energy of a body is the energy possessed by the body due to its motion. Mathematically,

$K=\frac{1}{2}mv^2$

where

m is the mass of the body

v is its speed

For the stone in this problem, we have:

K = 150 J is its kinetic energy

m = 5.0 kg is its mass

Re-arranging the equation for v, we find the speed of the stone:

$v=\sqrt{\frac{2K}{m}}=\sqrt{\frac{2(150)}{5.0}}=7.7 m/s$

Learn more about kinetic energy:

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Coronary artery disease is a disease of the heart where the arteries and blood vessels become clogged with fat deposits called _

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Plaque is the reasoning for this question ;)

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3 years ago

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The displacement vector from your house to the library is 520 m long, pointing 40 ∘ north of east.What are the x-component (x-ax

Alexeev081 [22]

Answer:

398.3 m, 334.2 m

Explanation:

The magnitude of the displacement vector is

v = 520 m

And its direction is

$\theta=40^{\circ}$

measured as north of east.

The x-component of this vector is given by:

$v_x = v_0 cos \theta = (520)cos 40^{\circ}=398.3 m$

While the y-component is given by

$v_y = v_0 sin \theta =(520)sin 40^{\circ}=334.2 m$

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3 years ago

Why should you use an iron hammer instead of a wooden <br> hammer?<br>

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Answer:

more durability and easier to pound a hammer with the heavy weight.

Explanation:

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2 years ago