I have some questions about physical science can someone helppp

Because light travels in a straight line and casts a shadow, Isaac Newton hypothesized that light is. B. a stream of particles.C

Drupady [299]

Answer: B. a stream of particles

The light is said to travel in a straight line and casts a shadow therefore, Isaac Newton formulated a hypothesis stating that lights is a stream of particles. This theory is later called the Corpuscular theory of light.

5 0

3 years ago

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Butter is an example for<br>liquid in solid or solid in liquid

ioda

Answer:

Liquid in solid.

Explanation:

Butter is colloidal in nature belonging to the category of gels. This means that the dispersed phase is liquid and the dispersing medium is solid. In short, butter is an example for liquid in solid.

8 0

3 years ago

A stone is thrown from the ground at a speed of 72km / hr. If the wind barrier is not taken into account, how high will the rock

marusya05 [52]

Here's link to the answer:

tinyurl.com/wpazsebu

5 0

3 years ago

What is it 60.2 mg = _____ g?

alexgriva [62]

G as in grams? Because what I got is 0.0602 from my calculator. So I'm not sure if that's what you are looking for.

8 0

3 years ago

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The index of refraction of a clear plastic is listed as 1.89 in the book, but you measured the angle of incidence 63.5° and the

lakkis [162]

Answer:

<h2>index of refraction = 1.69</h2><h2>percentage error = 10.58%</h2>

Explanation:

According to Snell's law, the ratio of the sine of angle of incidence to the sine of angle of refraction is a constant for a given pair of media. The constant is known as the refractive index.

Mathematically $\frac{sin i}{sin r} = n$

i = angle of incidence measured = 63.5°

r = angle of refraction measured = 32°

n = refractive index

$n = \frac{sin 63.5^{0} }{sin 32^{0} } \\n = \frac{0.8949}{0.5299}\\ n = 1.69$

The index fraction calculated is approx. 1.69.

If the index of refraction of a clear plastic as listed in the book is 1.89 and the calculated is 1.69, the percentage error will be calculated as thus;

%error = $\frac{1.89-1.69}{1.89} * 100$

%error = $\frac{0.2}{1.89}*100$

%error = $\frac{20}{1.89}$

%error = 10.58%

6 0

4 years ago