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3 years ago

What type of lever is shown below?

Physics

1 answer:

mr_godi [17]3 years ago

8 0

Answer:

This is a third class lever.

Explanation:

A third class lever is when the fulcrum is on one of the far ends, the load is on the other, and the effort is pushing up from the middle.

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In a vacuum, two particles have charges of q1 and q2, where q1 = +3.2 µC. They are separated by a distance of 0.28 m, and partic

NARA [144]

Answer:

q2 = - 8 × $10^{-6}$ C

negative sign because attract together

Explanation:

given data

q1 = +3.2 µC = 3.2 × $10^{-6}$ C

distance r = 0.28 m

force F = 2.9 N

to find out

q2 (magnitude and sign)

solution

we know that here if 2 charge is unlike charge

than there will be electrostatic force of attraction , between them

now we apply coulomb law that is

F = $\frac{q1q2}{4\pi \epsilon *r^{2}}$ ............1

here we know $\frac{1}{4\pi \epsilon}}$ = 9 × $10^{9}$ Nm²/C²

so from equation 1

2.9 = 9 × $10^{9}$ × $\frac{3.2*10^{-6}*q2}{0.28^{2}}$

q2 = $\frac{2.9*0.28^2}{9*10^9*3.2*10^{-6}}$

q2 = - 8 × $10^{-6}$ C

4 0

3 years ago

The density of balsa wood is 0.170 g/cm3. What is the mass if the volume is 12.0 mL?

Harlamova29_29 [7]

Answer:

<h3>The answer is 2.04 g</h3>

Explanation:

The mass of a substance when given the density and volume can be found by using the formula

<h3>mass = Density × volume</h3>

From the question

density = 0.17 g/cm³

1 mL = 1 cm³

12 mL = 12 cm³

So we have

mass = 0.17 × 12

We have the final answer as

Hope this helps you

8 0

3 years ago

If you could see the electric field coming off a proton you would notice that electric field lines are what?

Readme [11.4K]

The electric field generated by a proton is a radial field, so we would see the field lines going radially from the proton toward every direction. I've attached a picture representing the electric field generated by a positive charge, such as a proton, and we can see the field lines going radially from the charge toward every direction.

3 0

3 years ago

Which layer of the atmosphere is directly above the troposhpere? A.troposhpere B.stratosphere C.mesosphere D.exoshpere

vivado [14]

Its B. i hope i helped!!!

4 0

3 years ago

Read 2 more answers

Coherent light with wavelength 598 nm passes through two very narrow slits, and the interference pattern is observed on a screen

Stella [2.4K]

Answer:

1.196 μm

Explanation:

D = Screen distance = 3 m

$\lambda$ = Wavelength = 598 m

y = Distance of first-order bright fringe from the center of the central bright fringe = 4.84 mm

d = Slit distance

$tan\theta=\frac{y}{D}\\\Rightarrow \theta=tan^{-1}{\frac{y}{D}}\\\Rightarrow \theta=tan^{-1}{\frac{4.84\times 10^{-3}}{3}}\\\Rightarrow \theta=0.09243\ ^{\circ}$

$sin\theta=\frac{\lambda}{d}\\\Rightarrow d=\frac{\lambda}{sin\theta}\\\Rightarrow d=\frac{598\times 10^{-9}}{sin0.09243}\\\Rightarrow d=0.00037066\ m$

For first dark fringe

$dsin\theta=\frac{\lambda'}{2}\\\Rightarrow \lambda'=2dsin\theta\\\Rightarrow \lambda'=2\times 0.00037066\times sin0.09243\\\Rightarrow \lambda'=1.196\times 10^{-6}\\\Rightarrow \lambda'=1.196\ \mu m$

Wavelength of first-order dark fringe observed at this same point on the screen is 1.196 μm

3 0

2 years ago