Question 9 A U-tube contains some mercury. 12 cm of water is added to one side of the U-tube. Part A Find how high the mercury rises on the other side from its original level. Use 13.5 g/cm³ as the d
Answers
When 12 cm of water is added to one side of a U-tube, the mercury on the other side rises to a height of approximately 0.889 cm. This is based on the given density of mercury (13.5 g/cm³) and the principle of Pascal's law.
To find how high the mercury rises on the other side of the U-tube, we need to consider the principle of Pascal's law, which states that pressure is transmitted equally in all directions within an incompressible fluid.
Here's how we can approach the problem:
Density of mercury = 13.5 g/cm³
Height of water column = 12 cm
First, we need to calculate the pressure exerted by the water column. Pressure can be calculated using the formula P = ρgh, where P is the pressure, ρ is the density, g is the acceleration due to gravity, and h is the height of the column.
For the water column, the pressure exerted is P_water = ρ_water * g * h_water.
Next, we need to find the height to which the mercury rises on the other side.
Since the pressure is transmitted equally, the pressure exerted by the mercury column should balance the pressure exerted by the water column.
Let h_mercury be the height to which the mercury rises. The pressure exerted by the mercury column is P_mercury = ρ_mercury * g * h_mercury.
Since the pressures are equal, we have P_water = P_mercury.
Therefore, ρ_water * g * h_water = ρ_mercury * g * h_mercury.
Simplifying the equation, we find h_mercury = (ρ_water * h_water) / ρ_mercury.
Substituting the given values, we have h_mercury = (1 g/cm³ * 12 cm) / 13.5 g/cm³.
Simplifying further, h_mercury ≈ 0.889 cm.
Therefore, the mercury rises to a height of approximately 0.889 cm on the other side from its original level.
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Related Questions
Tell some types of light rays?
Answers
Answer: microwaves, infrared light, ultraviolet light, X-rays and gamma-rays
Hopes this helps!
Red light
Orange light
Green light
Violet light
Laser light
Bright light
Dim light
Sun light
Particle A is placed at position (3, 3) m, particle B is placed at (-3, 3) m, particle C is placed at (-3, -3) m, and particle D is placed at (3, -3) m. Particles A and B have a charge of -q(-5µC) and particles C and D have a charge of +2q (+10µC).a) Draw a properly labeled coordinate plane with correctly placed and labeled charges (3 points).b) Draw and label a vector diagram showing the electric field vectors at position (0, 0) m (3 points).c) Solve for the magnitude and direction of the net electric field strength at position (0, 0) m (7 points).
Answers
The properly labeled coordinate plane are attached below. The proper vector diagram that shows the electric field are attached below. The magnitude of the net electric field is -18.58 × 10⁵
To solve for the magnitude and direction of the net electric field strength at position (0, 0) m, we need to calculate the electric field vectors produced by each charge at that position and add them up vectorially.
The electric field vector produced by a point charge is given by
E = kq / r²
where k is Coulomb's constant (9 x 10⁹ N.m²/C²), q is the charge of the particle, and r is the distance from the particle to the point where we want to calculate the electric field.
Let's start with particle A. The distance from A to (0, 0) is
r = √[(3-0)² + (3-0)²] = √(18) m
The electric field vector produced by A is directed toward the negative charge, so it points in the direction (-i + j). Its magnitude is
E1 = kq / r²
= (9 x 10⁹ N.m²/C²) x (-5 x 10⁻⁶ C) / 18 m² = -1.875 x 10⁶ N/C
The electric field vector produced by particle B is also directed toward the negative charge, so it points in the direction (-i - j). Its magnitude is the same as E1, since B has the same charge and distance as A
E2 = E1 = -1.875 x 10⁶ N/C
The electric field vector produced by particle C is directed away from the positive charge, so it points in the direction (i + j). Its distance from (0, 0) is
r = √[(-3-0)² + (-3-0)²]
= √18 m
Its magnitude is
E3 = k(2q) / r² = (9 x 10⁹ N.m²/C²) x (2 x 10⁻⁵ C) / 18 m² = 2.5 x 10⁶ N/C
The electric field vector produced by particle D is also directed away from the positive charge, so it points in the direction (i - j). Its magnitude is the same as E3, since D has the same charge and distance as C
E4 = E3 = 2.5 x 10⁶ N/C
Now we can add up these four vectors to get the net electric field vector at (0, 0). We can do this by breaking each vector into its x and y components and adding up the x components and the y components separately.
The x component of the net electric field is
Ex = E1x + E2x + E3x + E4x
= -1.875 x 10⁶ N/C - 1.875 x 10⁶ N/C + 2.5 x 10⁶ N/C + 2.5 x 10⁶ N/C
= 2.5 x 10⁵ N/C
The y component of the net electric field is
Ey = E1y + E2y + E3y + E4y
= -1.875 x 10⁶ N/C - 1.875 x 10⁶ N/C + 2.5 x 10⁶ N/C - 2.5 x 10⁶ N/C
= -1.875 x 10⁶ N/C
Therefore, the magnitude of the net electric field is
|E| = √(Ex² + Ey²)
= √[(2.5 x 10⁵)² + (-1.875 x 10⁶)²]
= - 18.58 × 10⁵
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which of these constituents of an aqueous solution can transmit charge in a current?
Answers
In an aqueous solution, ions are the constituents that can transmit charge in a current. Ions are atoms or molecules that have a net electric charge due to the loss or gain of electrons.
These ions, which can be positively or negatively charged, move through the solution and facilitate the flow of electric current. When electric current is applied to an aqueous solution, the ions are able to move and carry charge from one place to another. This movement of ions is called ionic conduction and is the basis for the electrical conductivity of aqueous solutions.
In aqueous solutions, the ions are usually in the form of charged particles, such as sodium (Na+) and chloride (Cl-). These ions can move through the solution, carrying charge with them, allowing them to transmit a current.
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Help uhh i need to know this answer
Answers
Answer:
Explanation:
2. 330.63 ft because v*t=d and 3.09*107=330.63
3. 4.2 because 10/2.4=4.1666
4. 130 miles because 2 hours times 65mph= 130
5. 62.3 seconds because 480000/7700=62.33766233
8. 60 meters, because 0.5 *120 (because 2 minutes converted to seconds is 120) is equal to 60.
Fossils of the same life form species have been found on continents that are now divided by oceans. In one to two sentences, explain how this could be possible if a supercontinent did not exist. Explain Simply. Pls hurry
Answers
Answer:
This could be possible if the continents were once connected and then separated by plate tectonics, allowing the same species to spread across the land before it was divided by oceans.
Explanation:
This isn't a Physics question, do check your category before posting next time
2. Next, choose all the evidence that supports your argument. You may look back at your evidence cards.
-Evidence Card A: Magnetic Pole Arrangement
-Evidence Card C: Rail Material
-Evidence Card F: Number of Wire Coils
-Evidence Card G: Distance Between the Car and Launcher
Answers
To solve this we must be knowing each and every concept related to variables. Therefore, because the evidence cards all represent variables, none of them should be deleted.
What are variables?A variable is any trait, characteristic, number, or quantity that changes over time or may take on different values in different contexts (as contrast to constants, such as n, which do not change).
Magnetic pole configuration is a variable since its values can vary.
The quantity of coils is indeed a variable since it might have several numbers.
Rail material is indeed a variable since its values might vary.
The distance between the automobile and the launcher is flexible since it might take various values.
Therefore, because the evidence cards all represent variables, none of them should be deleted.
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a moving person completed 4,500j of work by lifting an object 2.45m. how much force did they exert?
Answers
Answer:
Explanation:
Given:
E = 4500 J
h = 2.45 m
____________
F - ?
W = F·h
F = W / h = 4 500 / 2.45 ≈ 1 840 N
A 5-mol ideal gas system undergoes an adiabatic free expansion (a rapid expansion into a vacuum), going from an initial volume of 10 L to a final volume of 20 L. How much work is done on the system during this adiabatic free expansion?
Answers
The work done on the system during an adiabatic free expansion is equal to the change in internal energy of the system.
Due to the adiabatic nature of the process, the change in the system's internal energy is equal to the change in the system's total energy, which is equal to the opposite of the change in potential energy.
As a result, the work accomplished is equal to the system's potential energy at the final volume less its potential energy at the initial volume. Since the system is perfect, PV, where P is the pressure and V is the volume, gives the system's potential energy.
Since P1 and P2 are the pressures before and after the expansion, respectively, the work done on the system is equal to −(20L×P2 - 10L×P1).
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7. Epiphytes in a rainforest use rainforest trees for
food
b. support
C. oxygen
d. pollination
Answers
Epiphytes are plants that grow on other plants, such as trees, but do not obtain nutrients from the soil. Instead, they absorb moisture and nutrients from the air and from rainwater that collects on their leaves. In a rainforest, where the ground is often covered by dense vegetation and the soil is poor, epiphytes have adapted to grow on trees as a means of support and to reach sunlight. The trees provide a substrate for the epiphytes to attach to and grow on, as well as a way to access light and nutrients. In turn, the epiphytes may provide habitat and food for other organisms, such as insects, birds, and small mammals.
Jeremy hypothesized that adults with blue eyes are shorter than adults with brown eyes. He collected data by visiting all of the teachers in his school and found that his hypothesis was false. Should Jeremy consider his hypothesis useful?
A.
Yes; now he knows that the exact opposite of his hypothesis must be true.
B.
Yes; a false hypothesis gives a scientist new information to use.
C.
No; a false hypothesis makes a scientist look silly.
D.
No; false hypotheses are a waste of time.
Answers
Answer: B. Yes; a false hypothesis gives a scientist new information to use.
Explanation:
Let us take a look and break down all the question's answer options.
✗ A.
Yes; now he knows that the exact opposite of his hypothesis must be true.
➜ This is not the case. He must look at this data and decide what is true.
✓B.
Yes; a false hypothesis gives a scientist new information to use.
➜ Yes! We learn from our research and looking back at our hypothesis.
✗ C.
No; a false hypothesis makes a scientist look silly.
➜ This isn't true. You cannot expect to be right all the time, and scientists make incorrect hypotheses frequently.
✗ D.
No; false hypotheses are a waste of time.
➜ Tying back into B and C, this isn't true. We learn from comparing our hypotheses with our data.
According to the superposition principle of waves, A. when two wave pass through the same material they always double in amplitude. B. many different waves can pass through the same point at once. C. when two waves pass through the same material they always cancel each other out. D. only one wave is able to pass through a single point at a single time.
Answers
Answer:
a
Explanation:
The index of refraction of a certain glass is 1.50. The sine of the critical angle for a total internal reflection at a glass-air interface is: (sin(?c) =?)
a) 0.5
b) 0.67
c) 0.75
d) 1.0
e) 0.95
Answers
The critical angle is the angle of incidence at which the angle of refraction is 90 degrees, resulting in total internal reflection. The sine of the critical angle can be calculated using Snell's Law: sin(?c) = 1/n, where n is the index of refraction. Therefore, for this glass with an index of refraction of 1.50, sin(?c) = 1/1.50 = 0.67. The correct answer is b) 0.67.
The index of refraction of a certain glass is 1.50, and you want to find the sine of the critical angle for total internal reflection at a glass-air interface. To calculate the sine of the critical angle, you can use the formula sin(?c) = n2/n1, where n2 is the index of refraction of air (1.00) and n1 is the index of refraction of the glass (1.50).
Plugging the values into the formula, sin(?c) = 1.00/1.50, which simplifies to sin(?c) = 0.67. Therefore, the sine of the critical angle for total internal reflection at a glass-air interface is 0.67 (option b).
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which solution will have a lower ph ( be more acidic) 0.1m hcl or 0.1m h2so4 ?
Answers
0.1M HCl will have a lower pH (be more acidic) than 0.1M H2SO4.
The pH of a solution is determined by the concentration of hydrogen ions (H+). In the case of hydrochloric acid (HCl) and sulfuric acid (H2SO4), both are strong acids that dissociate completely in water. However, sulfuric acid (H2SO4) dissociates into two H+ ions per molecule, while hydrochloric acid (HCl) dissociates into only one H+ ion per molecule.
Therefore, for the same concentration (0.1M), H2SO4 will produce twice as many H+ ions as HCl, resulting in a higher concentration of H+ ions and a lower pH. Hence, 0.1M HCl will have a lower pH and be more acidic than 0.1M H2SO4.
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A boat sailed 560 km in 8 hrs. It took three hours to travel the first 150 km. What was it’s average speed for the remaining journey?
Answers
Answer:
82 km/h
Explanation:
Given that A boat sailed 560 km in 8 hrs. It took three hours to travel the first 150 km. That is,
The remaining distance will be:
560 - 150 = 410 km
the remaining time will be:
8 - 3 = 5 hours
For the remaining Journey, average speed will be:
Speed = distance/time
Speed = 410/5
Speed = 82 km/h
Therefore, the average speed for the remaining journey will be 82 km/h
A punter kicks a football at an angle of 45° to the ground. The football has an initial velocity of 25 m/s.
a. How long is the football in the air?
b. How far does the football travel horizontally?
c. What is the maximum height of the football?
Answers
a) The football spent 3.6 s in air
b) It covered a horizontal distance of 64 m
c) It attained a height of 15.9 m
What is a projectile?When we talk about a projectile we are talking about something that has been thrown in such a way that it would follow a parabolic path. The meaning of this is that the path that is followed by the object is curved and we need to obtain the time of flight, the rage and the maximum height of the ball that have been projected.
a) For the time of fight we have;
T = 2u sinθ/g
u = velocity of projection
g = acceleration due to gravity
θ = angle of projection
Then;
T = 2 * 25 sin 45/9.8
T = 3.6 s
b) The range is obtained from;
R = u^2 sin2θ/g
R = (25)^2 sin 2(45)/9.8
R = 64 m
c) The maximum height;
H = u^2sin^2θ/2g
H = (25)^2 sin^2 45/2 * 9.8
H = 625 * 0.5 /19.6
H = 15.9 m
Hence, the ball attains a height of 15.9 m
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Superman does an exhibition run at a track meet. When he runs the 200 m
dash, he accelerates at 10 m/s/s for the entire distance. Approximately
how much time will it take him to run the 200 m? *
Answers
Answer:
6.32s
Explanation:
Given parameters:
Length of track and distance covered = 200m
Acceleration = 10m/s²
Unknown:
Time taken to cover the track = ?
Solution:
To solve this problem, we apply one of the motion equations as shown below:
S = ut + \(\frac{1}{2}\) at²
S is the distance covered
t is the time taken
a the acceleration
u is the initial velocity
The initial velocity of Superman is 0;
So;
S = \(\frac{1}{2}\) at²
200 = \(\frac{1}{2}\) x 10 x t²
200 = 5t²
t² = 40
t = 6.32s
24) An external heat source supplies heat to a system at a rate of 187 W as the system does work at a rate of 131 W. At what rate is the internal (thermal) energy of the system changing?
A) -56 W
B) 320 W
C) 56 W
D) 190 W
E) -320 W
Answers
The rate at which the internal (thermal) energy of the system is changing can be found by subtracting the rate at which the system does work from the rate at which external heat is supplied. Internal energy change = external heat rate - work rate = 187 W - 131 W = 56 W (option C) .
The first law of thermodynamics states that the change in internal energy of a system is equal to the heat added to the system minus the work done by the system.
In this case, the external heat source is supplying heat to the system at a rate of 187 W and the system is doing work at a rate of 131 W.
Therefore, the rate at which the internal (thermal) energy of the system is changing can be found by subtracting the rate at which the system does work from the rate at which external heat is supplied.
This gives us an answer of 187 W - 131 W = 56 W. Therefore, the correct answer is C, which is 56 W.
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Two illustrations of transverse waves. The one with shorter crests is labeled A. The wave with taller crests is labeled B. Which wave, A or B, has higher energy? A, because it has a higher amplitude B, because it has a higher amplitude A, because it has a lower amplitude B, because it has a lower amplitude.
Answers
The largest distance moved by a particle of a vibrating body from its equilibrium position is called amplitude. Wave B has higher energy because wave it has a higher amplitude.
What is the amplitude of a wave?The largest distance moved by the particles on either side of the mean position is the amplitude of a wave.
The maximum height of either crest or trough from its equilibrium position is called amplitude.
Hence Wave B has higher energy because it has a higher amplitude.
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Answer:c
Explanation:
did it
A(n) _______________ is an electric device that uses electromagnetism to change AC voltage or electrically isolate two circuits.
Answers
A(n) transformer is an electric device that uses electromagnetism to change AC voltage or electrically isolate two circuits.
A transformer is a device that transfers electrical energy from one circuit to another through the principle of electromagnetic induction.
Transformers are critical in the distribution and transmission of electricity since they can change the voltage level of AC power.
They have a variety of uses in electronic circuits and devices as well as power distribution systems, making them important components in electrical engineering.
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HI PLEASE HELP!
How do glow sticks affect the temperature of hot an cold water?
Will give brainliest. Will report any links or irrelevant answers so don’t even try.
Answers
Answer:
Chemical reactions occur slower at lower temperatures and faster at higher temperatures. When you put a glow stick in cold water, the chemical reaction slows down but will last for a longer period of time. When you put a glow stick in hot water, the reaction speeds up but will be over quicker.
Explanation:
(self-explanatory)
I hope this helps, have a nice day.
A student places two horseshoe magnets next to each other, and the poles of the magnets attach to each other. How does the kinetic energy of the system change?
Answers
The kinetic energy of the system does not change.
When two horseshoe magnets are placed next to each other, then they either attract or repel each other, depending on the position of their poles. if the poles are opposite they attract, if they are same they repel with other.
In case, if the poles of two horseshoe magnets are attracted to each other, indicating poles are opposite to each other. when the magnets are brought together then the work must be done to oppose the magnetic field between poles. This increases the potential energy of the system.
However, the question is about the kinetic energy of the system, which is related to the motion of the objects in the system. In this case, once the magnets are brought together they attract each other, they will have zero potential. Therefore, the kinetic energy will not change.
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Why do you see a rainbow when you look at white light through a prism?
please don't send links or files
Group of answer choices
components of white light (colors) were refracted into different amounts by the prism.
different colored of atoms passed through the prism and were knocked out.
the white light’s energy was diverted and converted into visible light.
the prism converted ultraviolet light to visible light.
Answers
Answer:
Sunlight is a mixture of colors. When it passes through a glass prism, some of the light is bent, or refracted, more than other portions. And just as sunlight passing through a prism is bent, so is sunlight passing through drops of water. This produces an atmospheric solar spectrum in the sky for all to see: a rainbow.
Explanation:
What is the equivalent resistance (total resistance) of the series circuit shown?
Answers
Answer:
In a series circuit, the equivalent resistance is the algebraic sum of the resistances. The current through the circuit can be found from Ohm's law and is equal to the voltage divided by the equivalent resistance. The potential drop across each resistor can be found using Ohm's law.
why stationary magnet inside a coil does not induce a electric current
Answers
How do the masses of objects affect the strength of gravitational force?
Answers
Answer:
So as the mass of either object increases, the force of gravitational attraction between them also increases.
Explanation:
If the mass of one of the objects is doubled, then the force of gravity between them is doubled. If the mass of one of the objects is tripled, then the force of gravity between them is tripled.
A truck accelerating at 0.0083 meters/second2 covers a distance of 5.8 × 104 meters. If the truck's mass is 7,000 kilograms, what is the work done to reach this distance?
A. 1.7 × 106 joules
B. 3.4 × 106 joules
C. 5.6 × 106 joules
D. 6.8 × 106 joules
Answers
A truck accelerating at 0.0083 meters/second2 covers a distance of 5.8 ×\(10^4\) meters. If the truck's mass is 7,000 kilograms, the work done to reach this distance is 3.3× \(10^6\) joules.
The correct answer is option E.
To calculate the work done by the truck to cover a distance of 5.8 × \(10^4\)meters, we need to use the equation for work:
Work = Force × Distance
In this case, the force can be calculated using Newton's second law:
Force = mass × acceleration
Where:
Acceleration (a) = \(0.0083 meters/second^2\)
Distance (d) = 5.8 ×\(10^4\) meters
Mass (m) = 7,000 kilograms
First, let's calculate the force exerted by the truck:
Force = mass × acceleration = (7,000 kg) ×\((0.0083 meters/second^2)\)= 57.1 Newtons
Next, we can calculate the work done:
Work = Force × Distance = (57.1 N) × (5.8 × 10^4 meters) = 3.3158 × \(10^6\)joules
Rounded to the nearest significant figure, the work done by the truck is approximately 3.3 × \(10^6\) joules.
Therefore, the correct answer is E.
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The question probable may be:
A truck accelerating at 0.0083 meters/second2 covers a distance of 5.8 ×\(10^4\)meters. If the truck's mass is 7,000 kilograms, what is the work done to reach this distance?
A. 1.7 × \(10^6\) joules
B. 3.4 ×\(10^6\) joules
C. 5.6 × \(10^6\)joules
D. 6.8 × \(10^6\)joules
E. 3,3 ×\(10^6\) joules
the atmosphere is a compressible envelope of gas where pressure is ____ near the surface and ____ as you go up into the atmosphere.
Answers
The pressure near the surface of the atmosphere is high, while it decreases as you go up into the atmosphere.
The atmosphere is composed of various layers of gases surrounding the Earth. Near the surface, the pressure is relatively high due to the weight of the air above it. As you move higher into the atmosphere, the pressure decreases.
This change in pressure with altitude can be explained by the decreasing density of the air molecules as you ascend. The weight of the air above a particular point decreases as you move higher, resulting in lower pressure. This decrease in pressure is due to the fact that the atmosphere becomes less dense with increasing altitude.
The relationship between pressure and altitude in the atmosphere can be described by the barometric formula, which states that pressure decreases exponentially with increasing altitude. As a general trend, the pressure decreases by about half for every 5.6 kilometers (3.5 miles) of altitude gained.
Therefore, near the surface of the atmosphere, the pressure is relatively high, and it progressively decreases as you go up into the atmosphere.
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in what view does the x-ray beam pass from one side of the body to the opposite side?
Answers
Answer:
lateral view
Explanation:
In the anteroposterior (AP) view, the x-ray beam passes from one side of the body to the opposite side.
In this view, the x-ray source is positioned in front of the patient, and the beam travels through the body from anterior (front) to posterior (back), capturing the desired images. In this view, the x-ray beam is directed from one side of the body to the opposite side, passing through the body in a horizontal plane. This view allows for an image to be produced of the body which is perpendicular to the beam, allowing for a clear image of the body in a cross-section. This is beneficial for capturing images of the internal organs and structures, such as the skeleton, which are not visible from the surface.
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a rock stays in the same position without moving, which law is it ?
Answers
Answer:This is also known as the law of inertia. EXPLANATION: Inertia is the tendency of an object to remain at rest or remain in motion.
You breathe in 12.0 l of pure oxygen at 298 k and 1,000 kpa to fill your lungs. how many moles of oxygen did you take in? use the ideal gas law: pv = nrt where r=8.31 l*kpa/mol*k
Answers
Answer:
Below
Explanation:
PV = n RT given re-arrange to
PV/(RT) = n plug in the given values (since all of the units 'match-up '
1000 * 12.0 / ( 8.31 * 298) = n = 4.85 moles