Answer:
The uncharged water is attracted to the charged balloon.
Explanation:
Electrostatics is the study of charges at rest. Neutral bodies have equal and evenly distributed positive and negative charges. However, these neutral bodies can become either positively or negatively charged. These charges can be produced by either of friction, contact or electrostatic induction.
For example, when an ebonite rod is rubbed with fur, the ebonite rod acquires a charge by friction. The ebonite rod becomes negatively charged while the fur is left with positive charges.
Similarly, for the experiment performed by Yolanda, when she rubs a cloth against a balloon, the balloon becomes negatively charged . Water is neutral in that it is composed of equal positive and negative charged particles. When she brings the balloon near the water, the positive charged particles in the water will move the water towards the negatively charged balloon since positive and negative charges are attracted to each other.
a force that resists motion when objects touch is what
A force that resists motion when objects touch is friction. Frictional force is the force that prevents an object from moving.
What is friction ?The term friction is defined as the force that opposes the motion of a solid object over another. There are four types of friction that are static friction, sliding friction, rolling friction, and fluid friction.
Three factors in particular determine the frictional force between two bodies: The adhesion between body surfaces, the surface roughness, and the deformation of bodies are all factors.
Frictional force is the force that prevents an object from moving. The imperfections on the two surfaces in contact are what produce friction. The type of surfaces in contact affects friction.
Thus, A force that resists motion when objects touch is friction.
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What type of reaction is the following: *
2C4H10 + 1302 – > 8C02 + 10,0
synthesis
decomposition
combustion
double displacement
Answer:
it is synthesis reaction
PbSO4 -> PbSO3 + O2 type of reaction
Answer:
Decomposition
Explanation:
This shows a compound splitting into two
By definition, PbSO₄ → PbSO₃ + O₂ is a decomposition reaction, because a single substance decomposes producing two different substances.
First, you have to know that in a decomposition reaction, a single substance decomposes, producing two or more different substances. That is, in this type of reaction, two or more substances are formed from a compound.
The atoms that make up a compound are separated to give the products according to the formula:
AB → A + B
This type of reaction can occur spontaneously or caused by certain external factors, such as heat, which promote the decomposition of the molecule into simpler substances.
In this case, it is possible to observe that PbSO₄ → PbSO₃ + O₂ is a decomposition reaction, because a single substance decomposes producing two different substances.
Learn more:
https://brainly.com/question/8009068?referrer=searchResultshttps://brainly.com/question/24905694?referrer=searchResultshttps://brainly.com/question/13134296?referrer=searchResultshow does weathering affect earths surface
as it breaks down the surface , it reshapes it
A patient needs to take 875mg twice daily The pills in the bottle are each 250mg How many pills does she wants to take 875mg
Answer:
[tex]3.5[/tex] pill need to taken for completing dosage of [tex]875[/tex] mg
Explanation:
Total dosage of medicine to be taken in a day
[tex]= 2 * 875 \\= 1750[/tex]mg
Total weight of one pill [tex]= 250[/tex] mg
Number of pills required is equal to total dosage of medicine divided by the weight of one pill.
Hence,
Number of pills
[tex]= \frac{875}{250} \\= \frac{175}{50} \\= \frac{35}{10} \\= 3.5[/tex]
10. Maslow refers to the stage where one reaches his or her full developmental potential as (1 point)
O belongingness.
O esteem.
O self-actualization.
O physiological
Answer: self-actualization (C)
Explanation:
it’s at the top of the hierarchy of needs.
1. In preparing his speech for a youth association, Eric considers the demographics and other important information about the people who will be listening to him speak. Like all successful speakers, Eric is engaging in the process of
C. Analyzing the audience
2. To gather formal information about audience members' attitudes, beliefs, and values, you can
D. ask open-ended and closed ended question on a survey
3. Debbie planned a speech calling for higher student fees. She thought about how her audience might react to this message. She prepared a survey and asked a group of her classmates to take it. What kind of audience analysis did Debbie use?
C. Formal
4. Why is audience analysis important?
A. It helps you understand the audience as much as possible before giving your speech
5. The audience's educational level is a factor related to
B. demographics
6. A speaker that collects information about the audience, evaluates what has been collected, and adapts his or her speech using that information is considered a(n) _____ speaker
B. Audience-centered
7. Maslow refers to the stage where one reaches his or her full developmental potential as
C. self-actualization
8. Which of the following is a method of collecting informal data about your audience?
D. observing the audience
9. Sara is preparing a speech to endorse a political candidate. She uses the information she gathered about her audience to determine their vales, beliefs, and attitudes so she can better prepare her speech. Sara is conducting which type of analysis?
A. Psychographic analysis
10. As you learn more about the audience, you are able to identify the beliefs, values, and attitudes of the audience. This is known as
B. Psychographics
I hope this helps!
Why do you think that tsunamis occur most commonly in the Pacific Ocean?
Classify the waves as longitudinal or transverse.
Answer:
the bell is longitudinal
the secound one is transverse
third is longitudinal
the fourth is transverse
Explanation:
i got it right on my mastery test
1 point
If the element Lithium (Li) were to bond with the element Sulfur (s), what
type of bond can you predict will be formed and why?*
A. Covalent-Li and S are two nonmetals
B. Covalent-Li is a metal and S is a nonmetal
C. Ionic-Li and S are two nonmetals
D. Ionic-Li is a metal and S is a nonmetal
Answer:
C. Ionic-Li and S are two nonmetals
Unit 2 Test
What makes up all of the populations in an area?
they
O Niche
Habitat
Ecosystem
Community
anybody knows the answers
Answer:
Metal is a better conductor than plastic so its going to absorb any cooler temperatures while the plastic stays the same.
Explanation:
4. Which of the following statements
about homeostasis is NOT true?
A Maintaining homeostasis requires that all
of the body systems work together.
B Long periods of stress can disrupt
homeostasis.
C Body temperature is a factor of
homeostasis.
D Only the nervous and endocrine systems
are involved in maintaining homeostasis.
Answer: Only the nervous and endocrine systems are involved in maintaining homeostasis.
Explanation: Hope this helped you
D. Only the nervous and endocrine systems are involved in maintaining homeostasis.
Living systems maintain homeostasis, which is defined as a state of constant internal, physical, and chemical conditions. This is a state of optimal functioning for the organism in which several variables, such as body temperature and fluid balance, are maintained within pre-determined boundaries.All of the body's systems must operate together to maintain homeostasis.Long periods of stress can cause homeostasis to be disrupted.Homeostasis is influenced by body temperature.Statement that is incorrect about homeostasis is "D. Only the nervous and endocrine systems are involved in maintaining homeostasis."For more information:
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I need help plz help me
Answer:
A
Explanation:
6When the moon is between ___the Earth and the sun, a
appears.
A. Full Moon
b. New Moon
C. Quarter Moon
d. Gibbous moon
Answer:
B. New Moon!
Explanation:
New Moons are commonly seen as nearly or completely dark, this is because the rays of the sun completely overshadow the moon's "light," therefore making it appear dark.
How does evaporation lead to precipitation
Answer:
1.evaperation
2.condenstation
3.precipatation
Explanation:
So I guess condenstation leads to precipatation-
Answer:
Evaporation is when water/liquids changes state from a liquid to a gas. Which eventually with enough water water vapor (which is what forms when water evaporates), it turns into clouds. But when the clouds get too heavy and full of water. Rain/precipitation falls from those clouds.
-Hope this helps!
Explanation:
Calculate the energy of a photon emitted when an electron in a hydrogen atom undergoes a transition from =3 to =1.
Answer:
[tex]1.936\times 10^{-18}\ \text{J}[/tex]
Explanation:
[tex]R_h[/tex] = Rydberg constant = [tex]2.178\times 10^{-18}\ \text{J}[/tex]
[tex]n_i[/tex] = Initial shell = 3
[tex]n_f[/tex] = Final shell = 1
We have the relation
[tex]\Delta E=R_h(\dfrac{1}{n_f^2}-\dfrac{1}{n_i^2})\\\Rightarrow \Delta E=2.178\times 10^{-18}(\dfrac{1}{1^2}-\dfrac{1}{3^2})\\\Rightarrow \Delta E=1.936\times 10^{-18}\ \text{J}[/tex]
The energy of the photon emitted here is [tex]1.936\times 10^{-18}\ \text{J}[/tex].
Paul went to his friend's 2 km from his house, he used his bike and took him 9 minutes.
Paul and his friend rode another 1.5 km to get some ice cream, it took them 10 minutes.
What was Paul's average speed of the whole trip?
The average speed : 3.07 m/s
Further explanationGiven
d1 = 2 km
t1 = 9 min
d2 = 1.5 km
t2 = 10 min
Required
The average speed
Solution
Average speed = total distance : total time
total distance :
= d1+d2
= 2+1.5
=3.5 km
total time :
= t1+t2
= 9 min + 10 min
= 19 min
Average speed :
= 3.5 km : 19 min
= 0.184 km/min
= 3.07 m/s
Could someone please help me? You can ignore number 3
For Number 2)
THE ELEMENTS TEND TO FORM COMPOUNDS BECAUSE AOMS ARE UNSTABLE AND CAN SHARE ELECTRONS IN THIER OUTER ENERGY LEVELS .
AS WE KNOW, ATOMS OF AN ELEMENT BECOMES MORE STABLE BY LOSING , GAINING AND SHARING ELECTRONS.
Elements react with each other to complete their octet or duplet so as to become stavle in nature. For e.g. Carbon reacts with oxygen to form carbon dioxide. Carbon reacts with four molecules of hydrogen to form methane - CH4.
Two steps that the factory manger can take to make the factory more carbon neutral are to and to
(i) CH2=CH-CH2-CH=CH,
Give IUPAC name of the compound.
Answer:
The IUPAC name of CH3 – CH2 – CH2 – CH=CH2 is Pent-1-ene.
what is 10x20=???????????? I NEEED HELP
Answer:
The answer for 10 times 20 is 200
Explanation:
Why... Because what is 1 times 2=2 so add the left over zero I'm that your answer!
A __________________ chemical equation shows that the same number of atoms in the reactants are also in the product.
balanced
rearranged
transferred
beautiful
Which types of changes must follow the law of conservation of mass?
Both physical and chemical changes
Neither physical nor chemical changes
Only physical changes
Only chemical changes
Answer: both
Explanation:
How many grams of NaOH do you need to dissolve to make 1.55 Liters of a 1.55 Molar solution?
Answer:
Mass = 96g
Explanation:
Molarity = number of moles/volume of solvent
According to the provided information, volume = 1.55L, Molarity = 1.55M
number of moles (n) = molarity × volume
n = 1.55 × 1.55
n = 2.4025
n = 2.40mol
For NaOH, molar mass = 23 + 16 + 1 = 40g/mol
mole = mass/molar mass
Mass = molar mass × mole
Mass = 40 × 2.40
Mass = 96g
Which of these is NOT a type of chemical reaction?
a
b
Synthesis
Decomposition
Single Replacement
The Mole
C С
d
write formulas and names for two binary ionic compounds
Which volume is the greatest?
Microliter
Milliliter
Deciliter
Centiliter
Answer:
Deciliter = 0.1 L
Explanation:
The options are unit of volume. In order to determine which is greatest, all the options would be converted to liter.
Microliter = 1e-6 L
Mililiter = 0.001 L
Deciliter = 0.1 L
Centiliter = 0.01 L
Among all the options; Deciliter = 0.1 L is the greatest.
If 1 g of radium-226 has an activity of 1 curie, what is the activity of 2 g of radium-226? 1 curie 2 curies 4 curies 10 curies
Answer:
2 curies
Explanation:
This is actually pretty easy to explain.
The Radium-226 which is an isotope of the radium, have an activity of curie. This is basically used in radioactivity of certain elements.
As in both cases we have Radium -226 and we are only varying the mass of the Radium, then, we can just do a rule of 3 to calculate this:
1 g Ra-226 --------> 1 Curie
2 g Ra-226 --------> X Curie
Solving for X:
X = 2 g * 1 Curie / 1 g
X = 2 Curies.You can also see this by taking 2 grams of Ra per separate. On one side you have 1 g of Ra-226 and on the other side, you have another 1 g of Ra-226. Both have 1 Cury of activity. If you put both on the same side, you will have 1 Cury of 1 isotope plus 1 cury of the other isotope, final result? 2 curies.
Hope this helps
A chemical process used to produce ethanol as a fuel additive was expected to produce 5,000 kilograms of ethanol based on the amounts of starting materials used, but only 4,760 kilograms were produced. What was the percent yield for ethanol in this process? A)1.09 percent B)4.80 percent C)95.2 percent D)105 percent
Answer:
The percent yield for ethanol in this process is 95.2%
Explanation:
Yield is the ratio between the amount of product actually obtained in the reaction and the maximum amount of product that could have been obtained if the reagents had been completely consumed.
The theoretical yield is the yield is the maximum you can get in a reaction.
On the other hand, the actual performance shows what you really get in experimentation. It is generally less than the theoretical yield.
So, the percentage return is the actual return times the theoretical return multiplied by 100.
So, in this case the percentage yield will be calculated as:
[tex]percent yield=\frac{4,760 kg}{5,000 kg} *100[/tex]
percent yield= 95.2%
The percent yield for ethanol in this process is 95.2%
write and balance the cellular respiration equation of glucose compared with the photosynthesis reaction in the terms of reactants products energy flow in the significance of each.
Answer:
Explanation:
.