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2 years ago

Is a pair of scissorrs a lever and wedge?

Physics

1 answer:

Ivahew [28]2 years ago

7 0

Answer:

Wedge

Explanation:

Scissors are a pair of wedges that are combined together.

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A variable force of 6x−2 pounds moves an object along a straight line when it is x feet from the origin. Calculate the work done

Marianna [84]

Answer:

931.00ft-lb

Explanation:

Pls see attached file

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3 years ago

1. Find the period of a tuning fork that vibrates 120 times/sec.?? I will give brainlest

Naddika [18.5K]

Answer:

it the last one

Explanation:

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3 years ago

A bouncing ball has the greatest amount of ___________ energy at the top of its bounce.

dybincka [34]

I think it is kinetic cuz it has most of it at the top

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3 years ago

Read 2 more answers

Calculate the pressure of water in a well if the depth of the water is 10m

Kryger [21]

Answer:

P= phg

so:- the height is 10m

density of water 1000 kg/m3

gravity is 9.8m/s2

P=1000 kg/m3*10m*9.8m/s2

=98000Pa

=98KPa

4 0

2 years ago

A hard-boiled egg of mass 46.0 gg moves on the end of a spring with force constant 25.6 N/mN/m . The egg is released from rest a

soldi70 [24.7K]

Answer:

0.022kg/s

Explanation:

We are given that

Mass of boiled egg=46 g= $\frac{46}{1000} kg=0.046 kg$

$1kg=1000 g$

Constant force=F=25.6 N/m

Initial displacement= $A_1=0.296 m$

Final displacement= $A_2=0.12 m$

Time=t=4.55 s

Damping force= $F_x=-bv_x$

We have to find the magnitude of damping constant b.

We know that the displacement of the oscillator under damping motion is given by

$x=Ae^{-\frac{b}{2m}t}cos(w't+\phi)$

For maximum displacement $cos(w't+\phi)=1$

Therefore , $x=A_2$

Substitute the values

$A_2=A_1e^{-\frac{-b}{2m}t}$

$e^{-\frac{b}{2m}t}=\frac{A_2}{A_1}$

$-\frac{b}{2m}t=ln\frac{A_2}{A_1}$

$lnx=y\implies x=e^y$

Substitute the values

$-\frac{b}{2\times 0.046}\times 4.55=ln\frac{0.12}{0.296}$

$\frac{2\times 0.046}{4.55b}=ln\frac{0.296}{0.12}$

$\frac{2\times 0.046}{4.55}=0.9b$

$b=\frac{2\times 0.46}{4.55\times 0.9}=0.022kg/s$

Hence,the magnitude of damping constant b=0.022kg/s

3 0

3 years ago