Answer:
I think is Number 2
The rate at which calcium chloride is equal to the rate at which sodium chloride is produced.
Let me know if I'm wrong.
The statement that is necessarily correct about the reaction is that both calcium carbonate and sodium carbonate are being produced
2NaCl + CaCO3 ⇌ Na2CO3 + CaCl2
The reaction above is a reversible reaction. A reversible reaction is a reaction in which the conversion of reactant to products and the conversion from product to reactant occurs simultaneously. This reaction is just like a back and forth reaction.
⇌ symbol represents a reversible reaction. Therefore, the statement that is necessarily correct about the reaction is that both calcium carbonate and sodium carbonate are being produced
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Your foot has been stepped on, twice! Both times, a 100 kg person put all their weight on the heel of their shoe upon your foot. The first person was wearing flats, and their heel had an area of 60 cm2. The second person was wearing high heels, and their heel had an area of 9 cm2. What can you say about the two pressures on your foot
The pressure exerted by the shoe of the second person is 6.6 times the pressure exerted by the shoe of the first person.
Se know that pressure is defined as the ratio of force to area. A person that has a mass of 100 Kg has a weight of 100Kg × 9.8 m/s^2 = 980 N. This is the force exerted on your feet.
Now, the area of the first person's shoe = 60 cm2 or 0.006m^2 hence the pressure exerted by the first person is;
P = F/A = 980 N/0.006m^2 = 1.63 × 10^5 Nm-2
The area of the second person's shoe is 9 cm2 or 0.0009m^2 hence the pressure exerted is;
P = 980 N/ 0.0009m^2
P = 1.08 × 10^6 Nm-2
Hence, the pressure exerted by the shoe of the second person is 6.6 times the pressure exerted by the shoe of the first person.
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Can anyone help with this?
Answer:
Answer:
1. Object
2. Sink
Explanation:
Step-by-step explanation:
1.5 < 1, the object is denser than the fluid
When an object is denser than a fluid it is submerged in, the object will sink.
it took David 2 seconds to lift a 5 Newton bag of toys from the floor to the top of the top shelf, which is 3 meters tall. How much power did David use?
A. 3.3 W
B. 6.1 W
C. 7.5 W
D. 14 W
I NEED ANSWERS ASAP!!!!! Suppose you apply a force of 75 N to a 25-kg object. What will the acceleration of the object b? (Remember a=F/m)
225 m/s2
25 m/s2
3 m/s2
25N
Answer:
C. 3m/s^2
Explanation:
A kickball is kicked straight up at a speed of 22.4 m/s. How high does it go?
Answer:
25.6 meters
Explanation:
have a good day
PLEASE HELP ASAP! WILL GIVE BRANLIEST! Pay attention to what happens to the things around you as you go about your day. Describe three examples of Newton’s third law in action. In your examples describe the action and the equal and opposite reaction.
Answer:
jumping, pulling a elastic band, bouncing a ball
Explanation:
when you jump, your legs apply a force to the ground, and the ground applies and equal and opposite reaction force that propels you into the air.
When we pull an elastic band, it automatically returns to its original position. The more you pull the more force it generates. This is the same when you pull or compress a spring. The action (applied force) is stored as energy and is released as a reaction with an equal and opposite force
A ball is able to bounce because of the reaction from the ground. If there was no reaction then the ball would not bounce but rather stick to the ground.
A roller coaster is at the top of a 102 m hill and a mass of 120 kg. The coaster (at this
moment) has
energy.
[tex]\\ \sf\longmapsto P.E=mgh[/tex]
P E means potential energy[tex]\\ \sf\longmapsto P.E=102(120)(10)[/tex]
[tex]\\ \sf\longmapsto P.E=122400J[/tex]
where is an electron located within an atom
Answer: in the cloud around the nucleus.
Explanation:
got it right
what's the answer? and is my answer correct?
Answer:
it's correct
Explanation:
answer is 3.6
Write the complete chemical symbol for the ion with 29 protons, 27 electrons,
and 31 neutrons.
Answer: Cu+2
Explanation:
PLEASE ANSWER NEED HELP!!!!!!!! PLEASE THE CORRECT ANSWER!!!!!!
Nadine knows that she should do some balance training, but she does not know much about it. She already has a full exercise schedule and is worried that she cannot fit in another intense workout session. What is the BEST advice for Nadine?
A.
She can add a few simple exercises to her regular routine.
B.
She really does not need to worry about it if she is stretching.
C.
She won’t get much out of her other workouts if balance isn’t addressed.
D.
She should find at least half an hour to go to the gym and work on balance.
PLEASE NO LINKS
I'm not that sure but I think the answer is D.
Cause without balance most exercises will not be easy to do.
But I suggest u wait for another person to answer.
She already has a full exercise schedule and is worried that she cannot fit in another intense workout session. She should find at least half an hour to go to the gym and work on balance. Thus option D is correct.
What are the benefits of doing exercise ?physical activity can lead to improve the muscle strength workout on maintenance oxygen and vitamins for tissues and allows the cardiovascular device to work more efficiently, when the heart and lung fitness enhance, energy will be enhanced.
The specificity, progression, overload, variation, and reversibility practicing often and always is so vital if you need to improve your performance.
The training help in development in fitness application are overload, progression, and specificity, increase the repetitions, a quantity of weight, or length of time in an exercise you are familiar with, you are making use of overload.
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Define power and discuss how to determine power worth 4 points
Power is, summarized, how fast something is done using energy. More specifically, power is the amount of energy transferred or converted per unit time.
To determine power, you use the following formula:
[tex]P=\frac{W}{Δt}[/tex]
(formatting is messed up, the denominator is Δt)
P - power
W - work
Δt - elapsed time
Hope this helps, have a wonderful day :D
An object has a mass of m and a weight of w moon whole it is on the moon where the acceleration due to gravity is 1.6mls 2 what will be the weight of the object when it is brought to the earth
Answer:
calculate with yhis formula "w=m×g
Given the mass of the yo-yo is m and the length of the string (radius of the circle traced by the yo-yo) is L, you find the moment of inertia to be I. If you double the length of the string, what is the new moment of inertia
What is the period of an object that makes 20 revolutions a minute?
Is it 4 seconds or is it 5 seconds or is it 2seconds or is it 3 seconds?
Answer: 3 seconds
Explanation: I hope this helps!
Why does plasma challenge what we know about matter? How does it confirm what we already know?
Being made of charged particles, plasmas can do things gases cannot, like conduct electricity. And since moving charges make magnetic fields, plasmas also can have them. In an ordinary gas, all the particles will behave roughly the same way. Auroras, lightning, and welding arcs are also plasmas; plasmas exist in neon and fluorescent tubes, in the crystal structure of metallic solids, and in many other phenomena and objects. The Earth itself is immersed in a tenuous plasma called the solar wind and is surrounded by a dense plasma called the ionosphere.
Plasma is a type of matter in which many electrons freely roam around the nuclei of atoms.
What is plasma?Although plasma is commonly thought of as a subset of gases, the two states behave very differently. Plasmas, like gases, have no definite shape or volume and are denser than solids or liquids.
Plasma is a sort of matter in which numerous electrons freely roam around the nuclei of atoms.
Plasma has been described as the fourth state of matter, alongside solid, liquid, and gas.
Normally, electrons in a solid, liquid, or gaseous sample of matter remain bound to the same nucleus.
Thus, plasma is considered a distinct phase because it does not conform to the standard descriptions and physical laws that are used to describe the standard three states of matter.
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As galáxias são maiores do que os enxames de estrelas?
[tex]▪▪▪▪▪▪▪▪▪▪▪▪▪ {\huge\mathfrak{Responder \;\;a}}▪▪▪▪▪▪▪▪▪▪▪▪▪▪[/tex]
As galáxias são geralmente maiores do que os aglomerados de estrelas. Como disse Geller ~ As galáxias são como as cidades em que vivem os aglomerados de estrelas. As galáxias podem ter cerca de milhares ou mais aglomerados de estrelas ~
I hope it helps ~
Can you answer it for me pls
Answer:
the answer is b. because liquid always bubble when boiling
Fill in the blank to balance the equation: ___ AgI + Na₂S → Ag₂ + 2NaI
Answer:2AgI + Na2S → Ag2S + 2NaI I am pretty sure this is the answer
Explanation:
A giant rat is running at +4 m/s. After 2 seconds, his velocity is +20 m/s. What is his acceleration?
Answer:
8m/s²
Explanation:
the formula to find acceleration is: a=v-u/t
v refers to the final velocity
u refers to the initial velocity
so, a=20-4/2
a= 8m/s²
If Kathy accelerates from rest in her car at 3.62 m/s? for 12.3 s, what will her final velocity be?
Answer:
15.66(s)
Explanation:
3.62+12.3
Shortlest wavelength?
I =
Q = 240 C
t= 300 s
Umm please help?? Please right it on your own words so I don’t get in trouble.
1. The longest banana split ever made was 8.04 km long (needless to say, more than one banana
was used). If an archer were to shoot an arrow horizontally from the top of Mount Everest, which
is located 8848 m above sea level, would the arrow's horizontal displacement be larger than 8.04
km? Assume that the arrow cannot be shot faster than 100.0 m/s, that there is no air resistance,
and that the arrow lands at sea level.
Answer: If an archer were to shoot an arrow horizontally from the top of Mount Everest, which is located 8848 m above sea level, would the arrow's horizontal
Explanation:
does cool air have more or less air pressure than warm air
Answer:
cold
Explanation:
cold air is more dense than warm air, therefore it has a higher pressure
-------------------------------is the time measuring device in which periodic motion is produced by mechanical winding.
Answer:
Pendulum ClockExplanation:
Explanation ---> Pendulum Clock is a time measuring device which was possible by the discovery of oscillation in which to and fro motion is present.In a blinding blizzard, a reindeer trudges 310.0 m 55° east of south across the tundra. How far south does the reindeer move? How far east does the reindeer move?
Please show work.
The characteristic of the displacement is a vector allows to find the results for the components of the displacement are;
It moves to the south distance is: y = 177.8 m It moved to the east distance is: x = 253.9 m
The displacement is a vector quantity, therefore it has modulus and direction, see attached for a diagram.
The reference system the West - East axis coincides with the x axis and the South - North axis with the y axis.
Let's use trigonometry to find its components.
cos 55 = [tex]\frac{y}{d}[/tex]
sin 55 = [tex]\frac{x}{d}[/tex]
y = d cos 55
x = d sin 55
let's calculate
y = 310 cos 55
x = 310 sin 55
y = 177.8 m
x = 253.9 m
In conclusion using the characteristics of the displacement is a vector we can find the components of the displacement are;
It moves to the south distance is y = 177.8 m It moved to the east distance is x = 253.9 m
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pls help me i give brainliest
Answer:
a
Explanation:
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A block weighing 30kg is moved at a constant speed over a horizontal surface by a force of 100 N applied parallel
to the surface
What does the "constant speed" tell you about the forces acting on the block?
Draw body diagram for the block.
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