3 years ago

How do you make a tissue dance

Physics

1 answer:

kvasek [131]3 years ago

3 0

with a fan? am I wrong or maybe multiple fans.

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When an object moves, stops moving, changes speed, or changes direction, how do scientists describe that condition?

FromTheMoon [43]

Those are all "acceleration", caused by
unbalanced forces acting on the object.

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3 years ago

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What happens when an electron moves from an excited state to the ground state?

Darina [25.2K]

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3 years ago

1. A car’s velocity increases from 4.0 m/s to 36 m/s over a 4.0 second time interval. What is its average acceleration?

Finger [1]

Explanation:

36-4/4= 9 m/squared. meter per squared.

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2 years ago

A block with mass 0.5 kg is forced against a horizontal spring of negligible mass, compressing the spring a distance of 0.2 m. W

lianna [129]

Answer:

So coefficient of kinetic friction will be equal to 0.4081

Explanation:

We have given mass of the block m = 0.5 kg

The spring is compressed by length x = 0.2 m

Spring constant of the sprig k = 100 N/m

Blocks moves a horizontal distance of s = 1 m

Work done in stretching the spring is equal to $W=\frac{1}{2}kx^2=\frac{1}{2}\times 100\times 0.2^2=2J$

This energy will be equal to kinetic energy of the block

And this kinetic energy must be equal to work done by the frictional force

So $\mu mg\times s=2$

$\mu\times 0.5\times 9.8\times 1=2$

$\mu =0.4081$

So coefficient of kinetic friction will be equal to 0.4081

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3 years ago

Physics question, please help?

Ludmilka [50]

0.4823 m/s

The initial velocity u1 of the ball=0

From the law of conservation of linear momentum.

m1u1+m2u2=m1v1+m2v2

(160×0)+(170×u1)=(160×0.3)+(170×0.2)

u1=0.4823m/s

6 0

3 years ago