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Juli2301
6 days ago
14

An experiment is designed to test what color of light will activate a photoelectric cell the best. The photocell is set in a cir

cuit that "clicks" in response to the current. The faster the current, the more clicks per minute. In this experiment, the number of clicks in one minute is recorded for each color of light shining on the photocell. To change the color of light, a different color of cellophane is placed over the same flashlight and the flashlight is then located a specific distance from the photocell.
Which of the following was not kept constant?
1.The color of the light after it has passed through the cellophane
2.The source of the original light
3.The distance of the light from the photocell
4.The test for photocell activation
Chemistry
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How many liters of cane juice is needed to supply 5g sucrose if cane juice contains 12% sucrose
alisha [2963]

Given parameters:

Mass of sucrose  = 5g

Density of sucrose  = 1.12g/mL

Percentage of sucrose per liter of cane juice  = 12%

Unknown:

Volume of cane juice required =?

We need to understand the relationship between volume and density. Density represents mass per unit volume.

Mathematically;

                Density  = \frac{mass}{volume}

Now, calculate the volume of sucrose;

                  1.12g/mL = \frac{5}{Volume}

       Volume  = \frac{5}{1.12}    =  4.46mL   = 4.46 x 10⁻³L since 1000mL  = 1L

Since 12% of one liter of cane juice is sucrose,  

                    12% of  x  liter of cane juice  = 4.46 x 10⁻³L

                   Volume of cane juice  = 4.46 x 10⁻³ x \frac{100}{12}   = 0.037L

Volume of cane juice needed is  0.037L

   

6 0
2 months ago
Which of the following is not an example of temperature abuse ?
alisha [2963]
What precisely is being followed here?
6 0
3 months ago
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What message would you have gotten if your computer become infected with the elk cloner virus
Anarel [2989]

Elk Cloner: A program that personifies itself. It’ll attach to all your disks. It infiltrates your chips. Yes, it’s Cloner! It adheres to you like glue. It adjusts RAM to engage the Cloner.

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3 months ago
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A bell hanging at the top of a tower has 8,550 j of energy. If it has a mass of 20 kg find the height of the Bell
Alekssandra [3086]

43.62m

Clarification:

Given details:

Energy = 8550J

Mass of bell = 20kg

Unknown:

Height of the bell =?

Solution:

This bell possesses potential energy, which signifies energy at rest due to its positional context.

Potential energy = m g h

where m denotes the mass of the object

g indicates gravity's acceleration

and h stands for the height of the object

Here, we need to isolate for h.

g = 9.8m/s²

     Insert the variables;

        8550 = 20  x  9.8 x h

     As a result, h = 43.62m

learn more:

Potential energy

3 0
2 months ago
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