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3 years ago

Which best describes why a diamond ring will sometimes sparkle different colors in normal white light?

2 answers:

9 0

The correct answer should be refraction. Similar things occur with water vapor that gets hit by sun rays after rain. That effect creates a rainbow.

cestrela7 [59]3 years ago

3 0

Refraction.
100% sure

hope this helped
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A mixing blade on a food processor extends out 3 inches from its center. if the blade is turning at 600 revolutions per minute,

7nadin3 [17]

First let's convert everything into SI units.
The length of the blade is 3 inches. Keeping in mind that 1 inc=0.025 m, we have
$L=3 in \cdot 0.025 \frac{m}{inc} =0.075 m$
The angular speed is 600 revolutions per minute. Keeping in mind that $1 rev=2 \pi rad$ and $1 min=60 s$ , the angular speed becomes
$\omega = 600 \frac{rev}{min} \frac{2 \pi rad/rev}{60 s/min}=62.8 rad/s$

And so, the linear velocity of the edge of the blade is equal to
$v=\omega L=(62.8rad/s)(0.075 m)=47 m/s$

8 0

3 years ago

Read 2 more answers

A person suffering from hyponatremia has which of the following?a. Too little sodium in the bloodb. Too much sodium in the blood

Art [367]

A person suffering from hyponatremia has too little sodium in the bloodstream. This condition appears when their is more amount of water as compared to solute. it is commonly caused by diarrhea, heart failure and liver disease. Person suffering from this condition must reduce the intake of water.

So the correct choice is

a. Too little sodium in the bloodstream.

6 0

3 years ago

A potter's wheel rotating at 215 rev/min is switched off and rotates through 75.0 revolutions prior to coming to rest. What is t

vaieri [72.5K]

Explanation:

Given :

Initial angular velocity =w_i= 215 rev/min

Final angular velocity =w_f= 0

Number of revolutions=n =75.0 rev

Using relation

$w_f^2-w_i^2=2\alpha n$

$0-215^2=2\times 75\alpha$

$-308.1666 rev/min^2=\alpha$

Converting to rad/s^2

$\alpha =-1.45 rad/s^2$

6 0

3 years ago

The stones are launched from the top of a tall building. One stone is thrown in a direction 15.0 ∘ above the horizontal with a s

const2013 [10]

Answer:

Maximum horizontal distance covered by both the stones will be same because the speed at which both the stones are thrown is same.

However, stone that is thrown upward will spend more time in the air as compared to the stone that is thrown downward because of the projectile and vertical component of the velocity.

5 0

4 years ago

PLEASE HELP ASAP Which one of the following is a step used for balancing chemical equations?

scZoUnD [109]

Answer:

C. Count the atoms in each substance in the reactants and products.

Explanation:

A chemical reaction can be defined as a chemical process which typically involves the transformation or rearrangement of the atomic, ionic or molecular structure of an element through the breakdown and formation of chemical bonds to produce a new compound or substance.

In order for a chemical equation to be balanced, the condition which must be met is that the number of atoms in the reactants equals the number of atoms in the products.

This ultimately implies that, the mass and charge of the chemical equation are both balanced properly.

In Chemistry, all chemical equation must follow or be in accordance with the Law of Conservation of Mass, which states that mass can neither be created nor destroyed by either a physical transformation or a chemical reaction but transformed from one form to another in an isolated (closed) system.

One of the step used for balancing chemical equations is to count the atoms in each substance in the reactants and products.

For example;

NH3 + O2 -----> NO + H2O

The number of atoms in each chemical element are;

For the reactant side:

Nitrogen, N = 1

Hydrogen, H = 3

Oxygen, O = 2

For the product side;

Nitrogen, N = 1

Hydrogen, H = 2

Oxygen, O = 2

When we balance the chemical equation, we would have;

NH3 + 3O2 -----> 4NO + 2H2O

3 0

3 years ago