3 years ago

4. Are the forces acting on the chandelier unbalanced?

Physics

1 answer:

kakasveta [241]3 years ago

3 0

Answer:

If it is not an object in motion, all forces are balanced.

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The pressure of air pushing down on a house roof is extremely large. Why is the roof not crushed?

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There is still air inside of a house, which is pushing the roof upwards, so the forces are equal and the roof is not crushed.

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3 years ago

Jill does twice as much work as Jack does and in half the time. Jill's power output is Group of answer choices one-fourth as muc

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Answer:

Second Choice.

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3 years ago

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A 25 kg child is riding on a swing. If the child travels 8.9 m/s at the bottom of their swing, how high into the air is the chil

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h = 4.04 m

Explanation:

Given that,

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The speed of the child at the bottom of the swing is 8.9 m/s

We need to find the height in the air is the child is able to swing. Let the height is h. Using the conservation of energy such that,

$mgh=\dfrac{1}{2}mv^2\\\\h=\dfrac{v^2}{2g}$

Put all the values,

$h=\dfrac{(8.9)^2}{2\times 9.8}\\\\h=4.04\ m$

So, the child is able to go at a height of 4.04 m.

7 0

2 years ago

If eight water waves pass an ocean buoy each minute, and successive wave crests are 20 m apart, find the wave speed:____________

Llana [10]

Answer:

The wave speed is calculated below:

Explanation:

Given,

number of waves passed per minute = 8

time period = 1 minute = 60 s

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waves passing interval per second = $\frac{8}{60}$ $s^{-1}$

Now,

wave speed = 20 m × $\frac{8}{60}$ $s^{-1}$

= $\frac{8}3}$ m/s

= 2.67 m/s

Hence the wave speed is 2.67 m/s.

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2 years ago

4. Are the forces acting on the chandelier unbalanced?​

4. Are the forces acting on the chandelier unbalanced?