PHYSICS MIDDLE SCHOOL

Vince is baking a cake. He pours flour and sugar into an empty bowl. The substance in the bowl is a(n) __________.a)atom.
b)element
c)mixture.
d)compound.

Answers

Answer 1
Answer:

Answer: c) mixture.

Explanation:

An atom is the smallest entity of any substance which consists of subatomic particles called as neutrons, protons and electrons.

An element is a pure substance which is  composed of atoms of similar elements. Example: H_2  

Mixture is  formed when atoms of similar or different elements are mixed in no fixed ratio without any chemical combination.

A compound is a pure substance which is made from atoms of different elements combined together in a fixed ratio by mass.  Example: H_2O
Answer 2
Answer: It is 'C', a mixture, because flour and sugar are both a compound.

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Find the equivalent resistance in the circuit between A and B ​

Answers

Answer:

6Ω

Explanation:

The 6Ω resistor and the 3Ω resistor are in parallel.

R = 1 / (1/6 + 1/3)

R = 1 / (1/6 + 2/6)

R = 1 / (3/6)

R = 6/3

R = 2

The 8Ω resistor and the other 8Ω resistor are also in parallel.

R = 1 / (1/8 + 1/8)

R = 1 / (2/8)

R = 8/2

R = 4

This 4Ω resistance is in series with the 4Ω resistor.

R = 4 + 4

R = 8

The 2Ω resistor and the 6Ω resistor are also in series.

R = 2 + 6

R = 8

These two 8Ω resistances are in parallel.

R = 1 / (1/8 + 1/8)

R = 1 / (2/8)

R = 8/2

R = 4

Finally, this 4Ω resistance is in series with the 2Ω resistance we found earlier.

R = 4 + 2

R = 6

The total equivalent resistance is 6Ω.

Select all of the answers that apply. The Doppler radar can tell you many things about the weather, like _____.
a) wind direction
b) wind speed
c) humidity
d) temperature
e) intensity of precipitation
f) location of precipitation
g) air pressure

Answers

The answers are --

a) wind direction
b) wind speed
e) intensity of precipitation
f) location of precipitation

Select all of the answers that apply.

The Doppler radar can tell you many things about the weather, like           .

  • wind direction
  • wind speed
  • humidity
  • temperature
  • intensity of precipitation
  • location of precipitation
  • air pressure

(the ones that are bolded are the correct answers...)

Does the depth of a pan affect how water freezes?

Answers

Yes it affects how long it'll take to freeze because of the amount of liquid that need to be frozen.
The more surface area exposed, the faster it freezes. The less surface area exposed, the slower it freezes.

What happens in a change in temperature as it is heated

Answers

It increases in temperature

Earth surface are composed of 70% of water and 30% of lands or soil.Therefore, whatever happens to our earth surface results to global warming.
Trees, waters and other natures protect our mother earth from direct heat of ultraviolet rays of sunlight, when these are gone, it will result to too much heat and even damage to our environment.

Answers

Answer:

idk

Explanation:

Dark cooler areas on the sun's surface are called what? (Prominences, solar flares, coronas, or sunspot)

Answers

Darker, cooler areas on the sun's surface are called sunspots.
Hope that helped =)
The answer in sunspot.
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