PHYSICS MIDDLE SCHOOL

Which of the following is most like an indicator of a chemical change

Answers

Answer 1

Answer:

Answer:

methyl orange, methyl red,phenoptalin, merhy red

Explanation:

all this following are indicators use to check the end point of a reaction

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Please Help Meee.. Will give brainlest What is the total resistance in the circuit depicted? Use R1 = 7.00 Ω, R2 = 8.00 Ω, R3 = 4.00 Ω, R4 = 6.00 Ω, R5 = 3.00 Ω, R6 = 8.00 Ω.

36.0 Ω

19.6 Ω

18.3 Ω

25.9 Ω

Answers

Answer:

Total resistance is 19.6 Ω for the circuit .

Explanation:

Given:

Six resistors of a circuit namely $R_1$ to $R_6$ .

Where

$R_1$ and $R_2$ are in series.

$R_3$ and $R_4$ are in parallel.

$R_5$ and $R_6$ are in parallel.

We know that continuous resistor which are in series are added up to find the equivalent resistance.

Similarly resistors which are arranged in parallel their equivalent resistance is $(R_3R_5)/(R_3+R_5)$ for the case of $R_3$ and $R_5$ .

According to the question:

Total resistance = R(equivalent) :

⇒ $R_(eq_) = R_1+R_2+((R_3R_4)/(R_3+R_4) )+((R_5R_6)/(R_5+R_6) )$

⇒ $R_(eq_)=7+8+((4* 6)/(4+6) )+((3* 8)/(3+8) )$

⇒ $R_(eq_)=7+8+((24)/(10) )+((24)/(11) )$

⇒ $R_(eq_)=15+(2.4 )+(2.18)$

⇒ $R_(eq_)=19.58$ Ω

So the total resistance of the circuit depicted is 19.58 Ω approximated to nearest tenth that is 19.6 Ω

Compare and contrast the processes of evaporation and condensation

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Condensation is the change from a vapor to a condensed state (solid or liquid). Evaporation is the change of a liquid to a gas.

If a characteristic of a parent, such as eye color,does not show up in offspring ,is it gone forever

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No it is not. It is still apart of the offspring's DNA. In fact it might show up in the very next generation!

A particle is moving in a circular path of radius r . The displacement after half a circle would be

Answers

Answer:

Explanation:

As we know that

The displacement is the total distance measured between the initial or start and final or destination point

If particle cover half path of the circle, the displacement can easily find out by considering the distance between the start and destination point

We attached the diagram for better understanding

As per the diagram.

The displacement after half-circle is

AB = OA + OB

= r + r

= 2r

FIND THE WEIGHT OF A 80 KG MAN ON THE SURFACE OF MOON? WHAT SHOULD BE HISS MASS ON THE EARTH AND ON THE MOON? (ge = 9.8 m/s2 ; gm = 1.63 m/s2)pls answer fast

Answers

Weight = (mass) x (acceleration of gravity at the place where the mass is) .

Man's mass = 80 kg

His weight on Earth = (80 kg) x (9.8 m/s²) = 784 newtons (about 176 pounds)

His weight on the Moon = (80 kg) x (1.63 m/s²) = 130.4 newtons (about 29.2 pounds)

His mass is 80 kg. Mass is the thing about him that doesn't change.
He has the same mass on the Earth, on the Moon, or anywhere.

Is this statement an observation or an inference? It must be raining outside. Explain.

Answers

The word must means that it is an inference. If you removed that word it would be an observation as it would mean you're seeing it.
However must implies that you can't see it and you are inferring the fact it's raining from another source, example the sound on the window.

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