3 years ago

Help asapp!!!!!!!!!!!!!!

Physics

1 answer:

IRINA_888 [86]3 years ago

3 0

Sorry don’t know this one

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Bob is threatening Tom’s life with a giant laser with wavelength (650 nm), a distance (D = 10 m) from the wall James is shackled

Fittoniya [83]

Answer:

He should stand from the center of laser pointed on the wall at 1.3 m.

Explanation:

Given that,

Wave length = 650 nm

Distance =10 m

Double slit separation d = 5 μm

We need to find the position of fringe

Using formula of distance

$d\sin\theta=n\lambda$

$d\dfrac{y}{D}=n\lambda$

$y=\dfrac{\lambda D}{d}$

Put the value into the formula

$y=\dfrac{650\times10^{-9}\times10}{5\times10^{-6}}$

$y=1.3\ m$

Hence, He should stand from the center of laser pointed on the wall at 1.3 m.

8 0

3 years ago

I need help please hurry ??!!!

jok3333 [9.3K]

Answer:

I would use the model of Ammonia because it helps you visualize the structure of NH3 better than the description. It would be easier to understand the structure of it if you can see it, rather than reading its description.

3 0

3 years ago

There are several events listed below some of the events are related to tectonic plates activity mark each that is associated wi

iVinArrow [24]

A because an earthquake is shaking of tectonic plates

5 0

3 years ago

StarsA. begin as protostars, which fire up when they collapse and become denser and hotter.B. create elements by splitting the n

Colt1911 [192]

Answer:

Explanation:

Begin as protostars, which fire up when they collapse and become denser and hotter.

4 0

3 years ago

A ball is dropped from a building of height h. Assume the ball starts from rest and that air friction can be ignored. Derive an

agasfer [191]

Answer:

$t=\sqrt{h/g}$

Explanation:

We use the kinematics equation to solve this question:

$y(t)=y_{o}+v_{o}t+1/2*a*t^{2}$

$v_{o}=0$ because the ball is dropped

$a=-g$ the acceleration is the gravity, negative because it points downwards

$y_{o}=h$ initial height

$y(t)=h/2$ final height

So:

$h/2=h-1/2*g*t^{2}$

$t=\sqrt{h/g}$

8 0

3 years ago