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Inessa05 [86]
2 years ago
12

 i WILL GIVE BRAINLYEST:::I NEED HELP SO BAD THE QUSTION IS AT THE END U JUST HAVE TO READ ALL THIS ... THE QUSTION IS AT THE EN

D
In this task, you will use an engineering design method to create two solar ovens. Here’s one way to approach an engineering design:

Define the problem.
List the potential solutions.
Pick the best solution and build it.
Test the solution.
Improve the design.
Estimated time to complete: 3 hours

You will need these materials:

2 thermometers that reach at least 120°F (50°C)
2 boxes of any size that the thermometer will fit inside
Optional materials you might need to complete your designs:

plastic wrap
aluminum foil
paper
scissors or a box cutter
ruler
masking tape or clear packaging tape
glue
Stay safe! Work slowly and carefully with the scissors so you do not cut yourself. Handle thermometers carefully. Remember, they are breakable. Thermometers can contain hazardous materials. If you break a thermometer, ask for an adult’s assistance to clean it up. Construct all solar ovens outdoors in an open area.

Design, Build, and Test
Part A

In this activity, you will construct two solar ovens and use thermometers to determine which oven gets the hottest. What engineering problem are you trying to solve?
Chemistry
1 answer:
topjm [15]2 years ago
3 0
I am pretty shor it is energy.
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Place the following elements in order of increasing electronegativity.K Cs PA. K < P < CsB. P < Cs < KC. Cs < K &
skad [1K]

Answer:

C. Cs < K < P

Explanation:

Electronegativity is the basically the tendency of an atom to attract electrons. The pauling scale is used to quantify electronegativity, the most electronegative element; fluorine has a value of 4.0 and francium, the least electronegative element has a value of 0.7

The electronegative values of the following elements are given as;

K = 0.82

Cs =0.79

P = 2.19

Arranging in order of increasing electronegativity, we have;

Cs < K < P. The correct option is;

C. Cs < K < P

5 0
3 years ago
Type the correct answer in the box.
tatiyna

the mass of  1  mole of phosphorus atoms is approximately  30 g

hope this helps :)

4 0
3 years ago
Read 2 more answers
What happens when stress builds at faults? Select three options
Stels [109]

Answer:

When Stress builds up at faults, the 3 options that are correct and can happen

- Rock can bend and break;

- Earthquakes develop at Earth's surface

- Forces affect Earth's rocks

Explanation:

This is a Geography question

- Rock can bend and break

When Stress builds up at faults, it leads to a geologic activity that causes a lot of pressure that lead to the movement of the earth's crust. The movement creates such intense pressure on the rocks, that, with time, they twist, bend, and break due to this pressure.

- Earthquakes develop at Earth's surface

As explained earlier, this intense pressure can lead to rocks breaking, as these rocks break inside the earth's crust, the gaps that come into play after the breaking of the rocks causes the remaining rocks to adjust, releasing a lot of force, and subsequently creating earthquakes.

- Forces affect Earth's rocks

As explained earlier, the forces resulting from these intense pressures, affect the earth's rocks. They move them both vertically and horizontally, change their shape and eventually break them.

Hope this Helps!!!

8 0
2 years ago
Does anyone know what Hydrogen's oxidation state would be if it was acting as an anion non-metal?
Ilia_Sergeevich [38]

Answer:

yeah,The oxidation state of an atom does not represent the "real" charge on that atom, or any other actual atomic property.Hydrogen has OS = +1, but adopts −1 when bonded as a hydride to metals or metalloids. Oxygen in compounds has OS = −2. This set of postulates covers .

Explanation:

3 0
2 years ago
what is the half life isotope if after 21 days you have 31.25 g remaining from a 250.0 g starting sample size?
alexgriva [62]

250 --> 125 --> 62.5 --> 31.25


each arrow equals one half life, so 3 half lives


14 days/ 3 half lives =


4.67 days = half life

3 0
3 years ago
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