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3 years ago

Important phase of newton education and scientific work occurred in isolation why might this have been helpful to him

1 answer:

3 0

The isolation period was the time that Issac Newton used to develop his genius. In 1665, when his university was closed because of bubonic plague, Issac Newton went to a relative's farm in Lincolnshire and spent the next two years there in solitary academic pursuits. It was during this time that he made major advances in formation of calculus, he also worked on the revolutionary theory of the nature of light and colour. It was during this period as well that he gained insights into planetary movement and he also develop the early versions of his laws of motion.

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Monochromatic x rays are incident on a crystal for which the spacing of the atomic planes is 0.440 nm . The first-order maximum

Sedaia [141]

Answer:

Wavelength of the x rays is $\lambda=2.79\times 10^{-10}\ m$

Explanation:

It is given that,

The inter planer spacing between the crystal planes, $d=0.44\ nm=0.44\times 10^{-9}\ m$

The first-order maximum in the Bragg reflection occurs when the incident and reflected x rays make an angle of 39.4 degrees with the crystal planes. According to the Bragg's condition, the first-order maximum is given by :

$d\ sin\theta=n\lambda$

n = 1

$d\ sin\theta=\lambda$

$0.44\times 10^{-9}\times \ sin(39.4)=\lambda$

$\lambda=2.79\times 10^{-10}\ m$

So, the wavelength of the x rays is $2.79\times 10^{-10}\ m$ . Hence, this is the required solution.

8 0

4 years ago

A runner runs the first 400m of a race in 80s, the second 400m in 70s and the final 800m in 130s. What was her average speed for

-BARSIC- [3]

Answer: The average speed is 5.71 m/s

Explanation:

The average speed in this run will be the quotient between the total distance that the runner traveled, and the total time it took.

Distance = 400m + 400m + 800m = 1600m

Time = 80s + 70s + 130s = 280s

Then the average speed is:

S = 1600m/280s = 5.71 m/s

5 0

3 years ago

If you use a marble of radius 11 mm for mercury, how far from the sun must you place your outermost planet? express your answer

mariarad [96]

Well so we know that 11mm is 2440km so 1mm is 2440/11 which is 221.8.
Ans we know that Neptune is the farthest and the distance is 4.498 billion km the we would divide that by 221.8 to get answer.
Ans=2.36km

8 0

3 years ago

John says that the value of the function cos[ω(t + T) + ϕ], obtained one period T after time t, is greater than cos(ωt + ϕ) by 2

Svetllana [295]

Answer:

No one is right

Explanation:

John Case:

The function $cos(\omega t +\phi)$ is defined between -1 and 1, So it is not possible obtain a value $2\pi$ greater.

In addition, if you move the function cosine a T Value, and T is the Period, the function take the same value due to the cosine is a periodic function.

Larry case:

Is you have $f=1+cos(\omega t +\phi)$ , the domain of this is [0,2].

it is equivalent to adding 1 to the domain of the $f=1+cos(\omega t +\phi)$ , and its mean that the function $f=cos(\omega t +\phi)$ , in general, is not greater than $cos(\omega t +\phi)$ .

3 0

3 years ago

A block lying on an inclined plane has a weight of 50 N. It just begins to slide down when the inclination of plane with the hor

hjlf

Answer:

μ = tanθ = tan30 = 0.58

Explanation:

μ = force parallel/force perpendicular = mgsinθ/mgcosθ = tanθ

5 0

3 years ago