PHYSICS MIDDLE SCHOOL

Use the terms atom and element to explain what makes silver and gold different

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Answer 1
Answer: An element is a substance made of many atoms of the same kind. Silver and gold are different elements, for the following reason:
- silver is an element whose atoms have atomic number 47 (i.e., an atom of silver contains 47 protons and 47 electrons)
- gold is an element whose aroms have atomic number 79 (i.e., an atom of gold contains 79 protons and 79 electrons)

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Maria and Ben are both suffering from a hereditary disease, as described in the following table.Description of DiseasePatient DescriptionMaria Blood cells get stuck in blood vessels, causing painful attacksBen Hemoglobin is abnormal due to curved shape of red blood cellsWhich disease(s) are Maria and Ben suffering from?a)Both are suffering from type 1 diabetes.b)Both are suffering from sickle cell anemia.c)Maria is suffering from sickle cell anemia and Ben from type 1 diabetes.d)Maria is suffering from type 1 diabetes and Ben from sickle cell anemia.
Explain the Impulse-Momentum Theorem.
Which scientists supported the idea that light is made of streams of particles? Check all that apply.
Which organelle appears to be empty but is filled with liquid? A.cell membrane B.chloroplast C.vacuole D.ribosome. Help ASAP PLEASE

Who is Gregor Mendel? What type of organism did he study? What did he learn that helped us understand genetics?

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he did genectics and studied pea plants n he discovered fundermental laws

Archimedes' principle says that a 15 N object is buoyed up by a force that is

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Answer:

  • equal to the weight of the fluid that the body displaces

Explanation:

Archimides' principle states the definition of buoyant force.

These are the imporant features of the buoyant force that you need to know:

  • Except for the very special vacuum condition, every body is immersed in a fluid.

  • The body is subject, at least, to two forces, its weight and the buoyant force.

  • The weight is the result of the gravitational attraction exerted by the planet, and is equal to the mass of the object by the gravitational acceleration (approximately 9.8 m/s² on Earth). It is directed vertically downward.

  • The buoyant force is the vertical upward force that the fluid exerts on the object and is equal to the weight of the volume of fluid displaced by the object.

  • The volume of fluid that the body displaces is equal to the immersed volume of the body.

Answer:

an immersed object is buoyed up by force equal to the weight of the fluid it displaces

suface winds on earth are primarily caused by differences in...?

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Surface winds on earth are primarily caused by differences in temperature.
Surface winds are displacements of air, which migrates to regions of high air pressure to pressure points that is less.

What is the independent variable?
And what is the dependent variable for this experiment

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Answer:

Independent variable - temperature

Dependent variable - tablet dissolving affect.

Explanation:

The Independent variable in an experiment is characterized as the variable in the experiment that is not affected by a change in any other variable or factor. It could be changed or manipulated to observe its impact on the dependent variable. While a dependent variable is the one that is affected by any change in the independent variable.

In the given experiment, the 'temperature' is the independent variable as it can be controlled or manipulated to observe the effect in the dependent variable. The 'tablet dissolving effect' would be the dependent variable as it is directly affected by any change in the independent variable(the higher the temperature, the easier the tablet gets dissolved).

The East African rift is an example of what

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The East African rift is an example of a divergent tectonic plate boundary that is developing. Though it is still currently a narrow zone, it is currently experiencing the process of splitting into two different tectonic plates. Over time, the supposed narrow zone can split into a larger one.

Which quantity is a vector quantity?O A.
displacement
OB. distance
OC. mass
OD. temperature
O E.
volume

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Answer: The answer to the problem is I feel temperature as

Explanation:This is because mesurement of a medium's temperature itself is a SCALAR but when we calculate the temperature increase or decrease in a medium it is known as a VECTOR as it has refers to both the direction of the medium's movement as well as the measurement of the scalar quantity.

Hopefully you got it!!!!
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