HELP ME PLEASE 40 POINTS You may select a topic from the list below, or choose your own.black hole
oort cloud
star types (supergiant, red dwarf, white dwarf)
supernovae
planetary nebulae
Andromeda galaxy
quasar
Use the library and other resource materials to research and understand your topic. Remember that nasa.gov is a web site that has reliable information as well that you may use for your research. Now write a 300-word report on what you have learned in the essay box below.

Answers

Answer 1

Answer:

Answer:

Do black hole

Explanation:

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Which subatomic particle will be attracted by a positively charged object?(1) proton (3) electron
(2) neutron (4) positron

Answers

The subatomic particle which will be attracted by a positively charged object is: Choice 3: Electrons.

By law of electricity; like charges repel while unlike charges attract.

In essence, the subatomic particle which will be attracted to a positively charged object is a negatively charged particle.

Since, protons are positively charged, neutrons have no charge, positrons are positively charged but electrons are negatively charged,

The subatomic particle which will be attracted by a positively charged object is; Electron.

Read. more:

brainly.com/question/10045946

(1) Protons have a positive charge, so will be repelled by other positive charges
(2) Neutrons have no charge, so won't be affected by positive charges
(3) Electrons have a negative charge, so will be attracted by a positive charge
(4) Positrons have a positive charge, so will be repelled by other positive charges

The answer is (3)

Which is the safest method for diluting concentrated sulfuric acid with water?

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The safest method for diluting concentrated sulfuric acid with water is to add acid to water. This way, when spill occurs, the acid is already diluted and less harmful than adding water to acid.

An ice cube is dropped into boiling water. How will heat flow between the water and the ice cube?

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On a microscopic (molecular) level, heat flows from the ice to the boiling water
at a minuscule rate, and from the water to the ice at a humongous rate.

Heat transfers from hot body to cold body. So when ice is dropped in water , the water at higher temperature will lose heat energy and is gained by the ice at less temperature. When the Net heat lost equals to Net heat gained i.e.,When both the bodies attain themal equilibrium, the flow of heat energy stops and both attain equal temperatures.

Which type of bond will most likely be found in HBr?

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HBr is covalent bond.!

Hydrogen and Bromine will share their electrons, to obtain the electron configuration of a noble gas.

hope this helps!

HBr is covalent bond

Why did the U.S. and Allied forces invade Afghanistan after 9/11?A. They knew the Taliban was responsible for the attacks.
B. They knew the Ba'ath Party was responsible for the attacks.
C. They knew that Afghanistan was harboring Osama bin Laden and other members of al-Qaeda.
D. They knew that Afghanistan was building a nuclear arsenal and planning to use dirty bombs on the U.S.

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The answer is C. They knew that Afghanistan was harboring Osama bin Laden and other members of al-Qaeda.

Which barium salt is insoluble in water?

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Actually, there a lot of barium salt that is insoluble in water. These includes Barium sulfate, Barium phosphate, Barium carbonate, Barium sulfide. Sometimes it also depends on the nonmetal ion. It also includes. Barium Chromate, Barium Oxalate, all have insoluble combinations with Barium.

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In a voltaic cell, chemical energy is converted to(1) electrical energy, spontaneously (2) electrical energy, nonspontaneously (3) nuclear energy, spontaneously (4) nuclear energy, nonspontaneously

You are doing research on planet X. The temperature inside the space station is a carefully controlled 27 ∘C and the pressure is 761 mmHg . Suppose that a balloon, which has a volume of 855 mL inside the space station, is placed into the airlock, and floats out to planet X.If planet X has an atmospheric pressure of 0.14 atm and the volume of the balloon changes to 3.21 L , what is the temperature, in degrees Celsius, on planet X (n does not change)?Express your answer using three significant figures.

In performing chest compressions on a child, the breastbone is compressed to the depth of how many inches? a) 1/2 b) 1 1/2 c) 2. d) 2½

The atomic mass of an element can be approximated by adding the number of _______ plus the average number of _______.A. protons; electrons B. protons; neutrons C. neutrons; electrons