138.42 g of salt water has a volume of 117.0 mL. Determine its density.

Answers

Answer 1
I believe it’s hebun 3. 0.446 g of hydrogen.

Related Questions

What is an uncharged body? In physics (simple words)

Answers

An uncharged body is a body that has equal magnitude of positive as well as negative charge on it. So as soon as some charged body is placed near it, the charged body induces negative charges on the uncharged body.

im confused on number two can u help me through it

Answers

Hi there!

We can solve this in two ways, using the Work-Energy theorem or kinematics.

Work-Energy:

We know that:

Ei = Ef, as long as there are no external forces working on the system.

Thus:

Ei = PE = mgh

Ef = KE = 1/2mv²

Therefore:

mgh = 1/2mv²

We can cancel out the mass:

gh = 1/2v²

9.8(10) = 1/2v²

√196 = v = 14 m/s

We can also solve using kinematics, using the equation:

vf² = vi² + 2ad

From rest (vi = 0 m/s) and a = g, so:

vf² = 2gd

vf = √2gh

vf = √(2 × 9.8 × 10) = 14 m/s

Why do atoms
have no electric charge even though most of
rticles have charges?

Answers

All atoms have the same number of electrons as protons, so the positive and negative charges "cancel out", making atoms electrically neutral. Unlike protons and neutrons, which are located inside the nucleus at the center of the atom, electrons are found outside the nucleus.


Please help fast!!!!
As Al pine jumps off the end of a ski jump he has an initial velocity of 13m/s
A) how high will he be 2 sec after he jumps
B) at what other time will he be as high as he is in part(a)
C) at 2 sec was Al going up or down? Explain your reasoning
D) when is he again at the height of the skip jump?
E) Al spends a total of 5.2 seconds in the air. How far below the end of the skip jump is the ground

Answers

Answer:

(Hope this helps can I pls have brainlist (crown)☺️)

Explanation:

In pic

Which electromagnetic waves which electromagnetic waves have the highest frequencies in the electromagnetic spectrum?
OA.
gamma rays
B.
microwaves
O C.
radio waves
OD.
ultraviolet radiation

Answers

Answer:

gamma rays

Explanation:

What is a common disease caused by a fungus?
A.
common cold
B.
HIV/AIDs
C.
athlete's foot
D.
pneumonia

Answers

the answer is c. athletes foot

State whether these questions are true or false.

Q1) Distance formula is displacement/time T/F?
Q2)velocity formula is = displacement/time T/F?

Answers

[tex]▪▪▪▪▪▪▪▪▪▪▪▪▪  {\huge\mathfrak{Answer}}▪▪▪▪▪▪▪▪▪▪▪▪▪▪[/tex]

The given statements are :

Q1) Distance formula is displacement/time T/F?

- False

Q2)velocity formula is = displacement/time T/F?

- True

explain what is the function of energy in the body and discuss internal and external body funcutions which energy is needed for

Answers

Answer:

Energy fuels your body's internal functions, repairs, builds and maintains cells and body tissues, and supports the external activities that enable you to interact with the physical world. Water, your body's most important nutrient, helps facilitate the chemical reactions that produce energy from food.

Why is carbon-14 the best element to use for dating things?

Answers

Answer:

the radioactivity of carbon-14 DECAYS BY HALF.

Explanation:

ph



what’s the correct choice?



help!!



Answers

Answer:

I think it's protons as they're positive!!

Cuales son las propiedades de los materiales semiconductores de electricidad?

Answers

Answer:En general, los semiconductores son materiales, inorgánicos u orgánicos, que tienen la capacidad de controlar su conducción dependiendo de ...

Explanation:

A circus performer juggling while standing on 10 a tightrope suspended 15.0 m above the ground tosses a sword directly upward into the air with a speed of 5.0 m/s. If the sword leaves his hand 1.0 m above the tightrope, what is the sword's maximum height above the ground? Round your answer to the nearest tenth

Answers

The sword's maximum height above the ground rounded to the nearest tenth is 122.49m

In order to get the maximum height of the rope above the ground, we will use the formula for calculating the range;

[tex]R=u\sqrt{\frac{2H}{g} }[/tex]

Given the following parameters:

speed u = 5.0m/s

H is the maximum height

g is the acceleration due to gravity = 9.8m/s

R is the range = 15.0m

Substitute the given parameters into the formula to have:

[tex]15=5\sqrt{\frac{2H}{9.8} }\\\frac{15}{3}=\sqrt{0.2041H} \\5^2 = 0.2041H\\H = \frac{25}{0.2041}\\H= 122.48m[/tex]

Hence the sword's maximum height above the ground rounded to the nearest tenth is 122.49m

Learn more here: https://brainly.com/question/25212833

1. A cross country skier averages 3.2 m/s over 9.1 km. How long did the skier's trip
take?

Answers

Answer:

your answer is 12.3

Explanation:

hope it helps : )

A toy car is pushed off a 1.2 meter tall table and lands 3 meters from the base of the table.
A. What was the initial horizontal velocity of the toy car?
B. How long did it take the toy car to hit the ground?

Answers

ANSWER:

A. 1.2 METERB. IT WILL LAND IN 3 METERS.

__________________

HOPE IT HELPS YOU

CAN YOU BRAINLEST ME

Answer:

w

Explanation:

w

Hai hạt bụi trong không khí cách nhau 3cm mỗi hạt mang điện tích -9,6.10 mũ -13C. A )Tính lực đẩy tĩnh điện giữa hai hạt
B ) tính số electrong dư trong mỗi hạt bụi biết diện tích củ mỗi electrong -1,6.10 mũ -19C

Answers

Answer:b

Explanation:

What is the acceleration of a Ford Mustang GT that can go from 0.00 to 27.8
m/s in 5.15 seconds?

Answers

Finding acceleration= final speed-initial speed/time taken (or A=V-U\T)

Finial speed= 27.8s
Initial speed= 0s
Time taken= 5.15

So..

27.8-0/5.15= 5.40m/s (rounded to two decimal places)

What would the position-time graph look like for an object that remains still over time?(1 point)
A. a horizontal line
B. an upward curve
C.an increasing line
D. a decreasing line

Plz Helppp. I need it ASAP

Answers

Answer:

a

Explanation:

it would be horizontal

The position-time graph look like A. a horizontal line for an object that remains still over time.

A position-time graph shows how far an object has moved from its starting point at any given time since it started moving. The slope of a position graph shows the velocity of an object.

The position-time graph looks like a horizontal line for an object that remains still over time.

Option A. is correct.

For more information:

https://brainly.com/question/11290682?referrer=searchResults

Position vs. Time
30
20
10
Position (m)
10
- 20
- 30
o
10 20
30
40 50
Time (s)
60
70
6. Use the graph above to answer Question 6:
The graph represents the motion of a car moving linearly. When is the car
moving backwards?
A. Os to 10 s
B. 20 s to 40 s
C. 40 s to 50 s
D. 50 s to 60 s

Answers

Answer:

D

Explanation:

cause the slope works with going up or down

PLZZZZZZ Help Due tmr

Answers

Well that’s very hard

What important scientific advance made bacteria less dangerous to humans

Answers

Answer:

bacteria like

virus

Speed is __________ velocity.
a) The same as
b) The absolute value of
c) The negative of
d) The rate of change of

Answers

Answer:

Speed is the rate of change of velocity.

Explanation:

Speed is the time rate at which an object is moving along a path, while velocity is the rate and direction of an object's movement. Put another way, speed is a scalar value, while velocity is a vector. Speed is just describing how fast the motion is compared to velocity.

Hope this helps :)

I need the right answer ASAP NO LINKS!!!

Answers

The first one!

Hope this helps pls mark as brainliest :)

Answer:

Models change to accommodate new discoveries.

Explanation:

Scientific models are based on current scientific knowledge. This means that when new discoveries are made they are subject to change.

Please help I'll mark brainliest

Answers

a, the graph shows that when the current is higher more paper clips have been magnetised therefore the magnetic field is bigger so the magnet is stronger.

9.) Why would a pendulum swing faster or slower on different planets?

Answers

The longer the length of string, the farther the pendulum falls; and therefore, the longer the period, or back and forth swing of the pendulum. Since the force of gravity is less on the Moon, the pendulum would swing slower at the same length and angle and its frequency would be less. So, the longer the pendulum, whether it is a string, metal rod or wire, the slower the pendulum swings. Conversely the shorter the pendulum the faster the swing rate.

A 0.12 kg object makes an elastic head-on collision with a 0.18 kg stationary object. The final velocity of the 0.12 kg object after the collision is 0.048 m/s in the direction opposite its initial movement. The final velocity of the 0.18 kg object after the collision is 0.19 m/s in the same direction as the object which strikes it. What was the initial velocity of the 0.12 kg object?

Answers

Answer:

0.12kg / 0.19

Explanation:

Becase the volcity reuded

The final velocity of the 0.18 kg object after the collision is 0.19 m/s in the same direction as the object which strikes it, then the initial velocity of the 0.12 kg object would be 0.237 m / s .

What is momentum?

It can be defined as the product of the mass and the speed of the particle, it represents the combined effect of mass and the speed of any particle, and the momentum of any particle is expressed in Kg m/s unit.

As given in the problem, a 0.12 kg object makes an elastic head-on collision with a 0.18 kg stationary object. The final velocity of the 0.12 kg object after the collision is 0.048 m/s in the direction opposite its initial movement. The final velocity of the 0.18 kg object after the collision is 0.19 m/s in the same direction as the object which strikes it.

By using the conservation of the momentum,

v × 0.12 + 0 × 0.18 = ( - 0.048)× 0.12 + 0.19 × 0.18

v = 0.237 m / s

Thus, the initial velocity of the 0.12 kg object would be 0.237 m / s .

To learn more about momentum from here, refer to the link given below ;

brainly.com/question/17662202

#SPJ2

A bicyclist brakes from 21.7 m/s to a stop in 32.3 m.
What is the acceleration of the bicyclist?
How much time does it take for the bicyclist to stop?
What is the bicyclist’s average speed?

Answers

The acceleration of the bicycle during the motion before stopping is 7.29 m/s².

The time taken for the bicycle to stop is 2.98 s.

The average speed of the bicycle is 10.83 m/s.

The given parameters;

initial velocity of the bicycle, u = 21.7 m/sdistance traveled by the bicycle, s = 32.3 m

The acceleration of the bicycle is calculated ad follows;

v² = u² + 2as

where;

v is the final velocity of the bicycle after stopping = 0

0 = u² + 2as

-2as = u²

[tex]a = -\frac{u^2}{2s} \\\\a = \frac{(21.7)^2}{2\times 32.3} \\\\a = -7.29 \ m/^2\\\\|a| = 7.29 \ m/s^2[/tex]

The time taken for the bicycle to stop is calculated as;

v = u + at

0 = 21.7  - 7.29t

7.29t = 21.7

[tex]t = \frac{21.7}{7.29} \\\\t = 2.98 \ s[/tex]

The average speed of the bicycle is calculated as;

[tex]v = \frac{totla \ distance}{total \ time} \\\\v = \frac{32.3}{2.98} \\\\v = 10.83 \ m/s[/tex]

Learn more here:https://brainly.com/question/16782759

If you spill household bleach on denim jeans, you will observe that the area of the spill no
longer has a blue color. Is this change chemical or physical? Give a reason for your
answer.

Answers

Answer: chemical change.

Explanation: Because the bleach has caused the denim to change color, the change is likely to be a chemical change.

The change that occurs when household bleach is spilled on denim jeans is a chemical change.

A physical change is a change in the form of a substance, but not in its chemical composition. For example, if you melt a piece of ice, you have made a physical change because the ice has changed from a solid to a liquid, but the chemical composition of the ice has not changed.

A chemical change is a change in the chemical composition of a substance. This means that the atoms in the substance are rearranged to form new substances. For example, when household bleach is spilled on denim jeans, the bleach reacts with the indigo dye in the jeans to form a new substance that is colorless.

In the case of household bleach on denim jeans, the bleach reacts with the indigo dye in the jeans to form a new substance that is colorless. This is a chemical change because the chemical composition of the indigo dye has been changed. The color change is a clear indication that a chemical change has occurred. When the bleach reacts with the indigo dye, the bonds between the atoms in the indigo dye are broken and new bonds are formed. This results in the formation of a new substance that is colorless.

To know more about the Chemical, here

https://brainly.com/question/2544616

#SPJ3

Help asap please thank you

Answers

Answer:

the answer its time

v = d/t

Answer:distance

Explanation:

Hai quả cầu nhỏ hoàn toàn giống nhau, mang điện tích q1, q2 đặt trong chân không cách nhau 20cm thì hút nhau F = 5×10^-5. đặt vào giữa hai quả cầu tấm thủy tinh dày 5 cm có hằng số điện môi là 4. tính lực tác dụng giữa hai quả cầu

Answers

Answer:

Hai quả cầu nhỏ hoàn toàn giống nhau, mang điện tích q1, q2 đặt trong chân không cách nhau 20cm thì hút nhau F = 5×10^-5. đặt vào giữa hai quả cầu tấm thủy tinh dày 5 cm có hằng số điện môi là 4. tính lực tác dụng giữa hai quả cầu

I want you to.......
Explain the Michelson-Morley experiment.

And please explain the equations.

Please ☺️❤️​

Answers

Answer:

Michelson reasoned that, if the speed of light were constant with respect to the proposed ether through which Earth was moving, that motion could be detected by comparing the speed of light in the direction of Earth's motion and the speed of light at right angles to Earth's motion.

Other Questions
-Ifsulfuricacid(H2SO4)reactswith29gramsofsodiumchloride(NaCl),how manygramsofhydrochloricacid(HCl)areproduced? H2SO4+NaCl>HCl+Na2SO4 - Inthesamereaction,howmuchsalt(NaCl)isneededtoproduce4.0molesof sodiumsulfate(Na2SO4)?- Inthesamereaction,ifyoustartedwith100molesofsulfuricacid(H2SO4),how manymolesofhydrochloricacid(HCl)couldyouproduce? how do I open this thing? it is stuck If Madeline wants to learn Korean, what is the fastest way she can learn accurately? The length of a rectangle is 3 meter shorter than3 times its width.Find the length and width if the perimeter is 210 meters Write a 100 word essay reflecting on how poems can be mirrors of life experiences,and look for at least one poem that can justify it ( a poem that talks about heartbreak, or the sinple joys of life). In international trade, an exchange rate is A. a way to record a nation's imports and exportsB. an agreement between nations to reduce trade barriersc. a chart for keeping track of prices on a stock exchangeD. a number that is used to show the value of one currency compared to another what do you understand about this phrase, "the ending of the Roman empire is the beginning of the Modern History?" ( tell me more about it ) Directions: Read the following passage from a review of director George Lucas's movie Star Wars and identify the critical approach the critic is using. Then, explain your answer in five sentences. Write your answers on your answer sheet. An Excerpt from a Review of George Lucas's Movie Star Wars Lucas's talents lie more in the realm of film technique than film writing. The plot is a simplistic "shoot 'em-up" war story of good versus evil, with stock characters such as the innocent hero, the beautiful damsel in distress, and the rogue with the heart of gold. The characters are shallow and always over-shadowed by the technical aspects of the film and their dialogue is cartoonish and awkward. Although the sparse story line, weak characters, and lack of strong dialogue are obvious flaws, the visual effects are well done and so overwhelming that the impact of the film as a whole is not marred. (Hirayama, R. L. Star Wars, Magill's Survey of Cinema)pa help naman po a drawing of consumer unit Who was the 16th president HELP ME AND I WILL MARK YOU AS BRAINLIEST pp Which of the following is not a run-on sentence? a. We should get rid of Daylight Saving Time it is a bother, and lost sleep causes car accidents. b. Are we supposed to spring forward or fall forward I can never remember how the time change works? c. It is silly to continue Daylight Saving Time, for energy use is very different now than it was a century ago. d. Daylight Saving Time is the best part of the year; there is more daylight in the evening that makes me feel good. Science is based on the correspondence theory of truth, which claims that truth corresponds with facts and reality. Various philosophers have put forth substantive challenges to the truth claims made by science. While science is the best tool to understand the material universe, it has nothing substantive to say about the things that matter most, like love, beauty, and purpose. Work out the value of x. And give a reason for your answer Please help me what is the answer? Write an equation for a line parallel to y = 2 x + 4 and passing through the point ( 2 , 1 ) Analyzing factors please help lol PLEASE HELP ME (GIVING BRANLEST)A bank teller s two customers. Jerry makes a $20withdrawal, so his balance changes by -$20. Hank makesa $5 deposit, so his balance changes by $5.Use absolute value to show the size of each transaction. Which transactioninvolves more money?O A. Hanks deposit involves more money, because -20 is greater than5.O B. Hanks deposit involves more money, because 1-20 is greater than151O C. Jerrys withdrawal involves more money, because 1-20 is greaterthan 51O D. Jerrys withdrawal involves more money, because 1-20 is lessthan 151 help me pleaseeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee Question:How does the system of checks and balances help limit the power of the federal government? Whoever answers will get brainliest (if it allows me).