Part A If 5.0 L of antifreeze solution (specific gravity = 0.80) is added to 2.5 L of water to make a 7.5-L mixture, what is the specific gravity of the mixture? Express your answer using two signific

Answer:

From Ohms Law

V=IR

V=5volts

R=33.0hms

I=V/R

I= 5/330

=0.0152A

The current flowing through the cross-section of the resistor is 0.0152A.

Given the data in the question;

Ohm's law states that "the current flowing through the cross-section of a conductor is directly proportional to the voltage across it".

It is expressed as;

\(V = IR\)

Where V is voltage, I is current and R is the Resistance.

To determine the current flowing through the resistor, we substitute our given values into the expression above.

\(V = IR\\\\I = \frac{V}{R}\\ \\I = \frac{5.00V}{330\ Ohm} \\\\I = 0.0152A\)

Therefore, the current flowing through the cross-section of the resistor is 0.0152A.

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The factor of safety for the slope stability analysis needs to be determined for a regolith slope in central California. The parameters provided include regolith cohesion, angle of internal friction, and regolith density. The analysis involves evaluating the stability of the slope under different conditions, such as changes in water depth, angle of internal friction, and slope steepness. Recommendations for the homeowners regarding the safety of their homes and potential remediation measures will also be provided.

To calculate the factor of safety, we need to consider the forces acting on the slope. The driving force is the weight of the regolith, which can be calculated by multiplying the density of the regolith by the volume of the slope. The resisting force is the shear strength of the regolith, which is determined by the cohesion and angle of internal friction. The factor of safety is the ratio of the resisting force to the driving force.

a. To determine the factor of safety, we can use the given parameters and calculate the driving force and resisting force. By dividing the resisting force by the driving force, we can obtain the factor of safety. If the factor of safety is greater than 1, it indicates that the slope is stable. If it is less than 1, the slope is considered potentially unstable.

b. If the water depth increases by 2 m, it adds additional weight to the slope, increasing the driving force. This decrease in the factor of safety suggests a less stable slope compared to the initial scenario.

c. If the angle of internal friction increases by a factor of 2, it enhances the shear strength of the regolith. This increase in the factor of safety indicates a more stable slope.

d. If the slope becomes steeper by a factor of 2, it increases the driving force. This decrease in the factor of safety suggests a less stable slope.

e. Based on the analysis, it is important to advise the homeowners that the slope is currently unstable, considering the factor of safety is less than 1. Remediation measures may include slope stabilization techniques such as installing retaining walls, soil reinforcement, or drainage systems to manage water infiltration and reduce driving forces. It is recommended to consult with a geotechnical engineer to develop a comprehensive slope stability plan for the safety of the home.

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When the surroundings do work to a system, the sign of work is negative.

When heat flows into a system, the sign of heat is positive.

When the surroundings do work to a system, the sign of work is negative.

When heat flows into a system, the sign of heat is positive.

In thermodynamics, work is considered positive when the system does work on the surroundings, and negative when the surroundings do work on the system. Similarly, heat is considered positive when it flows into the system, and negative when it flows out of the system. These sign conventions are used to maintain consistency and to ensure that the laws of thermodynamics are properly accounted for in energy calculations.

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0.118 m is the distance between the two protons.

Mass of proton = 1.6726 × 10⁻²⁷ kg

Weight of proton= 1.6726 × 10⁻²⁷ x 9.81 N

                            = 1.6408 × 10⁻²⁶ N

Charge of proton = 1.602 × 10⁻²⁹ C

The force between two protons = kq²/r²     where, K is a proportionality    

                                                            constant, q is a charge of proton and  

                                                         r is the distance between two protons.          

                                                       = 9 × 10⁹ × (1.602×10⁻¹⁹)²/r²      

To calculate distance :

  Weight of proton= Force between protons

 ⇒   1.6408 × 10⁻²⁶ N = 9 × 10⁹ × (1.602×10⁻¹⁹)²/r²

 ⇒    r = 0.118m

Therefore, 0.118 m is the distance between the two protons.

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The main advantage multistage rockets have over conventional rockets is they get lighter by dropping empty sections that held fuel. So, option D is the correct answer.

Multistage rockets have an advantage over conventional rockets since they are outlined to drop off empty segments that held fuel as the rocket gains height. This diminishes the weight of the rocket, making it less demanding to realize elude speed and reach the circle. As each organizes is utilized, it is discarded, diminishing the general weight of the rocket and making it more effective.

Multistage rockets are more flexible and can be utilized for a more extensive extend of missions. They can be custom fitted to meet the particular necessities of a mission by including or evacuating stages, which permits them to carry payloads to diverse heights and speeds. In differentiation, conventional rockets carry all of their fuel and engines with them through the complete mission, making them heavier and less proficient. 

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Answer:

C.

Explanation:

The elevation at point B is 740 ft. Therefore, option B is correct.

The height above or below a specified reference point, most frequently a reference geoid, which is a mathematical representation of the Earth's sea level as an equipotential gravitational surface, determines a location's elevation.

Four points are displayed on the accompanying map, ranging from A to D. Between these four places, there are still a few additional lines. The height between these points and lines is indicated on the map in feet, and from point A onwards there is an elevation difference of 20 feet.

Thus, option B is correct.

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Methane gas in the clouds of Neptune and Uranus is responsible for their Bluish-green appearance.

The colour of Neptune is more bluish rather than being bluish-green. The atmosphere of methane is composed of 80% hydrogen, 19% helium and just 1% methane, but the methane is present in the clouds of the planet which absorbs the red light and infrared spectrum and emits back the blue light outward and the same blue light we see.

Nearly similar composition of atmosphere is of Uranus , where the methane gas is present in the clouds. But in addition to that Uranus’ atmosphere is more thick and also has some deposits of hydrogen sulfide, ice and some photochemicals which gives the planet a bluish-green colour.

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If Jonathan walks 3 meters to the west, 2 meters south, 5 meters to the east, and 4 meters to the north, his displacement would be 2.8 meters.

The final position of Jonathan is 2 m exact North-East to the starting point. This forms a square. We need the diagonal of the square which is the displacement of Jonathan.

Diagonal of a square = a √ 2

a = Side of the square

a = 2 m

d = 2 √ 2

d = 2.8 m

Displacement is the distance between initial and final position whereas distance travelled is the total distance travelled throughout the given amount of time.

Therefore, Jonathan's displacement was 2.8 meters.

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Answer:

Forces have magnitude and direction.

Explanation:

Force is a vector quantity.

Answer:

20cm/s

Explanation:

Velocity is expressed according to the formula:

Velocity = Displacement/Time

Given

Displacement = 6 cm

Time = 0.3secs

Required

Velocity

Substitute into the formula

Velocity = 6/0.3

Velocity = 20cm/s

Hence the velocity in cm/s is 20cm/s

Answer:

An example of changes in people based on their age, are mood changes,playfulness and as of objects you can say old or broken, animals can use the same reference as humans, the more mature you are can suggest your older, such as the more worn down your are based on a object

Answer:

6.25 meter per second

Explanation:

because 8\50=6.25

Answer:

6.25 Meters per second

13.98085 Miles per hour

Explanation:

Answer:

Mass and Gravity

Explanation:

Objects with mass exert forces on each other via the force of gravity. This force is proportional to the mass of the two interacting objects and is inversely proportional to the square of the distance between them.

Answer: Distillation of mixture

Explanation: Different fractions of crude oil have different

boiling points according molecular weight of hydrocarbons

Answer:

216 units

Explanation:

F1 = kQ1Q2/r^2 = 36 (Coulomb's law)

F2 = k(2Q1)(3Q2)/r^2

= 6[kQ1Q2/r^2]

= 6F1

= 6 x 36

= 216 units

Answer:

A

Explanation:

so it would have the most kinetic energy when it is the fastest and that would be right before it lands becasuse gravity has been accelerating it the whole time so A.

if my answer helps please mark as brainliest.

Answer:

Explanation:

Graphic Method:

To solve this problem graphically, you will need to draw a vector diagram. Draw the two forces 10N and 20N as vectors originating from the same point, with the angle between the vectors being 60°. Then, draw the resultant vector that joins the tail of the first vector to the head of the second vector. The magnitude of the resultant vector is the magnitude of the resultant force.

Mathematical Method:

To solve this problem mathematically, you will need to use the law of cosines. The law of cosines states that:

R² = A² + B² - 2ABcosϴ

Where R is the magnitude of the resultant vector, A and B are the magnitudes of the two vectors, and ϴ is the angle between the two vectors.

So, in this case, R² = 10² + 20² - 2(10)(20)cos60°

R² = 100 + 400 - 400cos60°

R² = 500 - 200

R = √300

Therefore, the magnitude of the resultant vector is √300N.

If the two forces are now made to be inclined at 120° to each other, the law of cosines states that:

R² = A² + B² - 2ABcosϴ

Where R is the magnitude of the resultant vector, A and B are the magnitudes of the two vectors, and ϴ is the angle between the two vectors.

So, in this case, R² = 10² + 20² - 2(10)(20)cos120°

R² = 100 + 400 - 400cos120°

R² = 500 + 200

R = √700

Therefore, the magnitude of the new resultant vector is √700N.

if the nebular theory is correct, we would expect to find discoveries such as the presence of protoplanetary disks around young stars and the abundance of heavy elements in our solar system. These findings provide strong support for the nebular theory and allow us to draw proper conclusions about the formation of our solar system.

If the nebular theory is correct, we would expect to find certain discoveries that support this theory. One such discovery is the presence of protoplanetary disks around young stars.

Protoplanetary disks are flat structures made up of gas and dust that surround a newly formed star.

They are believed to be the birthplace of planets. Astronomers have observed these disks using telescopes and have found evidence of planet formation within them. This discovery provides strong evidence for the validity of the nebular theory, as it demonstrates the formation of planets from the materials present in the protoplanetary disk.

Another discovery that supports the nebular theory is the abundance of heavy elements in our solar system. The nebular theory suggests that our solar system formed from a cloud of gas and dust. As this cloud collapsed under its own gravity, it began to spin and flatten into a disk shape. Within this disk, elements heavier than hydrogen and helium (such as carbon, oxygen, and iron) could condense and form solid materials. The presence of these heavy elements in our solar system, as seen in the composition of planets, asteroids, and comets, aligns with the predictions of the nebular theory.

In conclusion, if the nebular theory is correct, we would expect to find discoveries such as the presence of protoplanetary disks around young stars and the abundance of heavy elements in our solar system. These findings provide strong support for the nebular theory and allow us to draw proper conclusions about the formation of our solar system.

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Answer:

114.7 psi

Explanation:

Absolute pressure = atmospheric pressure + gauge pressure

                               = 14.7  psi     + 100 psi  = 114 .7 psi (sea level)

Explanation:

The object is not moving, because the distance is a constant value regardless of the time value.

Two small spheres separated 3.13 m apart have equal positive charge. the electric force between them is 4.57e-2 n. The amount of charge on one sphere is approximately 1.72 x 10^-9 C.

The electric force between two charged spheres can be calculated using Coulomb's law:

F = k * Q1 * Q2 / d^2

Where,

F = the electric force,

k = Coulomb's constant (8.99 x 10^9 N * m^2 / C^2),

Q1 and Q2 are the charges on the two spheres, and d is the distance between them.

Rearranging the equation and solving for one of the charges:

Q1 =\(\sqrt{ (F * d^2 / k)}\) = \(\sqrt{(4.57e-2 N * (3.13 m)^2 / (8.99 x 10^9 N * m^2 / C^2))}\) = 1.72 x 10^-9 C

So, the amount of charge on one sphere is approximately 1.72 x 10^-9 C.

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Answer:

k=694.44

Explanation:

PE=1/2kx^2

5=1/2k*.12^2

5=1/2k(.0144)

divide both sides by .0144

The turntable's rotation angular velocity when the block reaches the outer edge is 5.578 rads⁻¹

The inertial moment of the turntable block = \(\frac{1}{2} mr^{2}\)

The inertial moment of the block = \(mr^{2}\)

According to the law of conservation of angular momentum, the total angular momentum of the system when the block is seated at the center and when the block is at the outside edge must be the same since no external torque operates on the system.

Additionally,

ω= 2\(\pi\)f, where f represents rpm, can be used to determine

ω= 2π×63/60 = 6.597

So, I*ω = I' * ω'

\([\frac{1}{2} 0.23 *(0.5)^{2} + 0.021* (0)^{2} ]6.597= [\frac{1}{2} 0.23 *(0.5)^{2} + 0.021* (0.5)^{2} ]\)*ω'

ω' = 5.578 rads⁻¹

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Answer:

1.25×10¯² Kg

Explanation:

From the question given above, the following data were obtained:

Mass (in grams) = 12.5 g

Mass (in kilograms) =..?

Thus, we can obtain the mass of the sample in kilogram (kg) by doing the following:

Recall:

1000 g = 1 kg

Therefore,

12.5 g = 12.5 g × 1 kg/ 1000 g

12.5 g = 0.0125 Kg = 1.25×10¯² Kg

From the above illustration, 12.5 g is equivalent to 1.25×10¯² Kg.

Therefore, the mass of the sample in kilogram is 1.25×10¯² Kg

Answer:it's 92 my friend

Explanation:

have a great day

Answer:

92

Explanation:

0.4 · 230 = 92

Answer:

100

Explanation:

cause power equal to work over time

The heat absorbed by the water sample to convert it from 17.5°C to 118.9°C is approximately 539.24 kJ.

Heat absorbed refers to the amount of thermal energy that is added to a substance and causes an increase in its temperature. It is a measure of the energy transferred from a heat source to a substance. The heat absorbed can be calculated using the formula:

Q = mL

where Q is the heat absorbed, m is the mass of the substance, and L is its change in enthalpy or heat of vaporisation. In this equation, L represents the amount of heat needed to change the state of the substance, for example, from a liquid to a gas. The unit of heat absorbed is usually joules or kilojoules (kJ).

The heat absorbed by a substance can be calculated using the formula:

Q = mL

where Q is the heat absorbed, m is the mass of the substance, and L is its change in enthalpy or heat of vaporisation.

For water, the heat of vaporisation at normal atmospheric pressure is approximately 40.7 kJ/mol. This means that it takes 40.7 kJ  heat to convert 1 mole water at 100°C to steam at 100°C.

Convert the heat absorbed to kJ by using the following formula:

Q = mL = (m)(40.7 kJ/mol)

where m is the number of moles of water heated.

To calculate the number of moles, use the formula:

m = n = (mass of sample) / (molar mass of water)

The molar mass of water is 18.015 g/mol.

Plugging in the given values, we get:

m = (238.8 g) / (18.015 g/mol) = 13.21 moles

Q = (13.21 moles)(40.7 kJ/mol) = 539.24 kJ

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