4 years ago

Which statement best defines energy?

Physics

1 answer:

mrs_skeptik [129]4 years ago

8 0

Answer:

the strength and vitality required for sustained physical or mental activity.

Explanation:

hope this help!:D

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This diagram shows the forces acting on a car. The center dot represents the car, a the arrows represent the forces acting on th

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Need diagram right? Post it

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3 years ago

The water from a fire hose follows a path described by y equals 3.0 plus 0.8 x minus 0.40 x squared (units are in meters). If

ivanzaharov [21]

Explanation:

It is given that, the water from a fire hose follows a path described by equation :

$y=3+0.8x-0.4x^2$ ........(1)

The x component of constant velocity, $v_x=5\ m/s$

We need to find the resultant velocity at the point (2,3).

Let $\dfrac{dx}{dt}=v_x$ and $\dfrac{dy}{dt}=v_y$

Differentiating equation (1) wrt t as,

$\dfrac{dy}{dt}=0.8\times \dfrac{dx}{dt}-0.8x\times \dfrac{dx}{dt}$

$v_y=0.8\times v_x-0.8x\times v_x$

$v_y=0.8v_x(1-x)$

When x = 2 and $v_x=5\ m/s$

So,

$v_y=0.8\times 5\times (1-2)$

$v_y=-4\ m/s$

Resultant velocity, $v=\sqrt{v_x^2+v_y^2}$

$v=\sqrt{5^2+(-4)^2}$

v = 6.4 m/s

So, the resultant velocity at point (2,3) is 6.4 m/s. Hence, this is the required solution.

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3 years ago

How are liquids like gasses

Marta_Voda [28]

Answer: A liquid is made up of tiny vibrating particles of matter, such as atoms, held together by intermolecular bonds. Like a gas, a liquid is able to flow and take the shape of a container. Most liquids resist compression, although others can be compressed.

Explanation:

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4 years ago

Witch of the following is not considered to be a greenhouse gas

nevsk [136]

None of the above, nothing is there

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3 years ago

Read 2 more answers

Determine the weight of a 1350 kg rock as it falls off a cliff.

mr Goodwill [35]

Answer:

13,230 N

Explanation:

F = mg

F = (1350 kg)(9.8 m/s²)

F = 13,230 N

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3 years ago