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denpristay [2]
4 years ago
15

a class was given a task of creating the best solar oven to cook a hot dog. the group with the best solar oven is automatically

given a one-hundred percent.
Physics
2 answers:
Ber [7]4 years ago
8 0

Answer:

B

Explanation:

Katarina [22]4 years ago
4 0
What is the question?
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Six seconds after starting from rest, a car is moving at 15 m/s. What is the car's
Sidana [21]

Answer:

  2.5 m/s²

Explanation:

a = ∆v/∆t = (15 m/s)/(6 s) = (15/6) m/s² = 2.5 m/s²

7 0
3 years ago
A student needs to conduct a reaction that combines chemicals A and B to synthesize product AB . If we write this as a chemical
rusak2 [61]

Answer : The number of molecules of A needed to make 5000 molecules of AB will be, 5000

Explanation :

Law of conservation of mass : It states that mass can neither be created nor be destroyed but it can only be transformed from one form to another form.

The given balanced chemical reaction is,

A+B\rightarrow AB

As per question, molecule B is an excess reagent because it had enough molecule to make 5000 molecules of AB. So, molecule A is limiting reagent.

From the balanced reaction, we conclude that

As, 1 molecule of AB produced from 1 molecule of A

So, 5000 molecule of AB produced from 5000 molecule of A

Hence, the number of molecules of A needed to make 5000 molecules of AB will be, 5000

8 0
3 years ago
Question 14 Unsaved
defon

The correct answer is I disagree. Elements form all pure substances, but some pure substances include elements bonded together to form molecules and compounds.

Elements are pure substances but these elements also make other things such as water. The water molecule is made of two elements called oxygen and Hydrogen. Now water itself is a pure substance as it is chemically bonded hydrogen and Oxygen but it is composed of more than one element

3 0
3 years ago
What is the youngest to oldest mesozoic era, precambrian time, cenozoic era, paleozoic era
Lynna [10]
Oldest to youngest *Precambrian Era*Paleozoic *Mesozoic*Cenozoic
6 0
4 years ago
An escalator carries you from one level to the next in an airport terminal. the upper level is 4.3 m above the lower level, and
fomenos
<span>2700 Joules The important value here is how high the escalator moved you. The actual length doesn't matter. All it affects is how fast the work is performed upon you. So the escalator lifted 64 kg against gravity for 4.3m. So: 4.3 m * 9.8 m/s^2 * 64 kg = 2696.96 kg*m^2/s^2 = 2696.96 Joules Rounding to 2 significant figures gives 2700 Joules</span>
6 0
3 years ago
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