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2 years ago

What color will a white dress appear if white light is passed through a red filter. Explain.

1 answer:

5 0

"If you pass white light through a red filter, then red light comes out the other side. This is because the red filter only allows red light through. The other colors (wavelengths) of the spectrum are absorbed. Similarly, a green filter only allows green light through."

I'm not too sure it either wouldn't be too visible or it would have a darker color..lmk if you have questions

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(a) Calculate the density of a 374.5-g sample of copper if it has a volume of 41.8 cm3. (b) A student needs 15.0 g of ethanol fo

o-na [289]

Answer:

For a: The density of the sample of copper is $8.96g/cm^3$

For b: The volume of ethanol needed is 19.0 mL

For c: The mass of mercury is 340. grams

Explanation:

To calculate density of a substance, we use the equation:

$\text{Density of substance}=\frac{\text{Mass of substance}}{\text{Volume of substance}}$ ......(1)

For a:

Mass of copper = 374.5 g

Volume of copper = $41.8cm^3$

Putting values in equation 1, we get:

$\text{Density of copper}=\frac{374.5g}{41.8cm^3}\\\\\text{Density of copper}=8.96g/cm^3$

Hence, the density of the sample of copper is $8.96g/cm^3$

For b:

Mass of ethanol = 15.0 g

Density of ethanol = 0.789 g/mL

Putting values in equation 1, we get:

$0.789g/mL=\frac{15.0g}{\text{Volume of ethanol}}\\\\\text{Volume of ethanol}=\frac{15.0g}{0.789g/mL}=19.0mL$

Hence, the volume of ethanol needed is 19.0 mL

For c:

Volume of mercury = 25.0 mL

Density of mercury = 13.6 g/mL

Putting values in equation 1, we get:

$13.6g/mL=\frac{\text{Mass of mercury}}{25.0mL}\\\\\text{Mass of mercury}=(13.6g/mL\times 25.0mL)=340.g$

Hence, the mass of mercury is 340. grams

5 0

3 years ago

The final marks in a statistics course are normally distributed with a mean of 70 and a standard deviation of 10. The professor

Alinara [238K]

Use inversenormal on a calculator and type in .1 , 70 , 10 . That percent is for A and will determine at what mark an A will be. Do the same for the rest of the grades but change the first argument in the calculation

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3 years ago

Conservation of ____________ energy is only valid when it occurs in a situation with no frictional force.

Flura [38]

Potential energy......

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3 years ago

With a well labeled diagram explain the stages of meiosis and mitosis

NNADVOKAT [17]

Answer:

hope that helps