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3 years ago

13

A scientific _______ is a unifying explanation for a set of observations that has been verified by multiple testing. hypothesis

belief law theory

2 answers:

Lelu [443]3 years ago

5 0

Theory is the answer. Hope this helps.

Fofino [41]3 years ago

4 0

A scientific THEORY is a unifying explanation for a set of observations that has been verified by multiple testing. hypothesis belief law theory

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n electric motor rotating a workshop grinding wheel at 1.10 102 rev/min is switched off. Assume the wheel has a constant negativ

Schach [20]

Answer:

Time taken to stop = 6 sec

Explanation:

Given:

Rotation of wheel = 1.10 × 10² rev/min

Final velocity (v) = 0

Angular acceleration (a) = - 1.92 rad/s²

Find:

Time taken to stop

Computation:

Initial velocity (u) = (1.10 × 10² × 2π rad) / 60 sec

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3 0

3 years ago

Coherent light with wavelength = 600 nm falls on two very narrow closely spaced slits and the interference pattern is observed o

Mrac [35]

Answer:

The distance between the two slits is 1.2mm.

Explanation:

The physicist Thomas Young establishes, through its double slit experiment, a relationship between the interference (constructive or destructive) of a wave, the separation between the slits, the distance between the two slits to the screen and the wavelength.

$\Lambda x = L\frac{\lambda}{d}$ (1)

Where $\Lambda x$ is the distance between two adjacent maxima, L is the distance of the screen from the slits, $\lambda$ is the wavelength and d is the separation between the slits.

If light pass through two slits a diffraction pattern in a screen will be gotten, at which each bright region corresponds to a crest, a dark region to a trough, as consequence of constructive interference and destructive interference in different points of its propagation to the screen.

Therefore, d can be isolated from equation 1.

$d = L\frac{\lambda}{\Lambda x}$ (2)

Notice that it is necessary to express L and $\lambda$ in units of millimeters.

$L = 4m \cdot \frac{1000mm}{1m}$ ⇒ $4000mm$

$\lambda = 600nm \cdot \frac{1mm}{1x10^{6}nm}$ ⇒ $0.0006mm$

$d = (4000mm)\frac{0.0006mm}{2mm}$

$d = 1.2mm$

Hence, the distance between the two slits is 1.2mm.

6 0

3 years ago