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4 years ago

Which of these statements are true about scientific theories and laws?

2 answers:

7 0

<span>The best response would be that theories are not opinions. While laws and theories are similar, laws tend to be a collection of theories about the same phenomenon. Laws can be expressed as math formulae, but more often they're in the form of "if-then" statements. Laws and theories both have to be rigorously tested before they reach these classiffications.</span>

V125BC [204]4 years ago

5 0

Answer:

Theories are not opinions.

Explanation:

Theories are all of them tested, with the scientific method in order to be accepted or refuted, then Laws are tested and are observable by any means all around the globe, the only option that is actually correct would be that Theories are not opinions because they are scientific statements that can be tested.

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A 1.900m tall man drives a 1,350 kg car off of a 249m tall cliff 32 miles west of San

Nimfa-mama [501]

Answer:

I need to be still. 450 miles an hour. That was stupid of him lol.

Explanation:

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4 years ago

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Answer:

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Explanation:

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3 years ago

A cube has a density of 1900 kg/m 3 kg/m3 while at rest in the laboratory. What is the cube's density as measured by an experime

Deffense [45]

Answer:

4847.94844926 kg/m³

Explanation:

$\rho'$ = Actual density of cube = 1900 kg/m³

$\rho$ = Density change due to motion

v = Velocity of cube = 0.92c

c = Speed of light = $3\times 10^8\ m/s$

Relativistic density is given by

$\rho=\dfrac{\rho'}{\sqrt{1-\dfrac{v^2}{c^2}}}\\\Rightarrow \rho=\dfrac{1900}{\sqrt{1-\dfrac{0.92^2c^2}{c^2}}}\\\Rightarrow \rho=\dfrac{1900}{\sqrt{1-0.92^2}}\\\Rightarrow \rho=4847.94844926\ kg/m^3$

The cube's density as measured by an experimenter in the laboratory is 4847.94844926 kg/m³

3 0

3 years ago

A light beam strikes a piece of glass at a 65.00 ∘ incident angle. The beam contains two wavelengths, 450.0 nm and 700.0 nm, for

Leokris [45]

Answer:

Explanation:

Lower the refractive index , higher the wave length

Refractive index becoming high reduces the velocity and hence wavelength as frequency remains unchanged.

So refractive index 1.4831 will correspond to wavelength of 450 nm.

For refractive index is 1.4831 , angle of incidence i , angle of refraction r .

Sin i / Sinr = 1.4831

sin65 / sinr = 1.4831

sir r = sin65 / 1.4831

= .9063 / 1.4831

= .6111

r = 37.67 degree

For refractive index is 1.4754 , angle of incidence i

Sin i / Sinr = 1.4754

sin65 / sinr = 1.4754

sir r = sin65 / 1.4754

= .9063 / 1.4754

= .61427

r = 37.9 degree

angle between two refracted ray

37.9 -37.67

= 0. 23 degree

6 0

3 years ago

Read 2 more answers

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3 years ago