Jia is preparing to cook a family dinner, and she begins by gathering ingredients for the main course and dessert. She realizes that most ingredients

go through both physical and chemical changes as they cook.

As her family eats the delicious dinner, Jia remembers an important fact about the law of conservation of mass. What does she remember?

o A Matter always moves from hot to cold.

B. Matter is not created or destroyed in any change.

O C. Matter can change physically or chemically.

O D. Matter is the amount of mass in a given volume.

Work done on the gas = -1600 J, and Heat flow into the gas = -1600 J . The correct option for both questions is (option 6).

To solve this problem, we can use the first law of thermodynamics, which 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:

ΔU = Q - W

where ΔU is the change in internal energy, Q is the heat added to the system, and W is the work done by the system. Since the volume of the gas is held constant during the second part of the process, no work is done on or by the gas, so W = 0.

For the first part of the process, the pressure is constant, so we can use the equation:

W = PΔV

where P is the pressure, and ΔV is the change in volume. We can convert the volumes to cubic meters, and the pressure to Pascals:

P = 2 atm = 2 x 1.0 x 10^5 Pa

V1 = 10 L = 0.01 m³

V2 = 2 L = 0.002 m³

ΔV = V2 - V1 = -0.008 m³ (since the gas is being compressed)

W = PΔV = (2 x 1.0 x 10^5 Pa) x (-0.008 m³) = -1600 J

So, the work done on the gas during the compression is -1600 J.

To find the heat flow into the gas during the second part of the process, we can use the equation:

ΔU = Q - W

Since the internal energy of an ideal gas depends only on its temperature, and the temperature is the same at the beginning and end of the process, ΔU = 0. Therefore:

0 = Q - W

Q = W = -1600 J

So, the heat flow into the gas during the second part of the process is -1600 J.

Therefore, the answers to the questions are Work done on the gas = -1600 J (option 6), and Heat flow into the gas = -1600 J (option 6).

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To convert the speed from meters per hour to kilometers per hour, you can divide the speed in meters per hour by 1000 to get the speed in kilometers per hour.

In this case, the car is traveling at a speed of 12,000 m/hr. Dividing this speed by 1000 gives us a speed of 12,000/1000=12 km/hr.

So the car is traveling at a speed of 12 km/hr.

Answer:

vf²=vi²+2a∆x

Explanation:

The third equation of motion gives the final velocity of an object under uniform acceleration given the distance traveled and an initial velocity: v 2 = v 0 2 + 2 a d . v^2=v_0^2+2ad. v2=v02+2ad. The graph of the motion of the object.

The escheat doctrine is an involuntary alienation common law doctrine which transfers the property of a person who dies without heirs to the state.

Escheat is a legal principle that applies when a person dies without leaving a will or any known heirs. In such cases, the property of the deceased person is transferred to the state or government as the rightful owner. The rationale behind escheat is to prevent property from being left in a state of limbo and ensure that it is put to productive use for the benefit of society.

The specific rules and procedures regarding escheat vary by jurisdiction, as it is governed by state laws. In some cases, the state may attempt to locate any potential heirs or beneficiaries before claiming the property. However, if no rightful heirs are found within a specified period, the property reverts to the state through the process of escheat.

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A body temperature of 97.34 Fahrenheit is not considered a fever, as it is below the normal range of human body temperature, which is around 98.6 Fahrenheit (37 Celsius).

Temperature is a physical quantity that measures the degree of hotness or coldness of an object or a substance relative to a reference point. It is a measure of the average kinetic energy of the molecules in a system, which is related to the speed and movement of the molecules. Temperature is usually measured using a thermometer, which contains a substance that expands or contracts in response to changes in temperature. The most common temperature scales are Celsius (°C) and Fahrenheit (°F). In science, the Kelvin (K) scale is also commonly used, which is an absolute temperature scale that starts at absolute zero (-273.15°C or -459.67°F) and has no negative values. Temperature is an important physical parameter that affects many physical, chemical, and biological processes, including the behavior of gases, the melting and boiling points of substances, the rate of chemical reactions, and the function of living organisms. For example, changes in body temperature can indicate illness or disease, while changes in the temperature of the Earth's atmosphere can affect weather patterns and climate.

Here,

To convert Celsius to Fahrenheit, you can use the formula:

°F = (°C × 1.8) + 32

So to convert 36.3 Celsius to Fahrenheit, we plug in the value of 36.3 for °C:

°F = (36.3 × 1.8) + 32

°F = 97.34

Therefore, 36.3 Celsius is equivalent to 97.34 Fahrenheit.

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An area where atomic magnets point in the same direction is called a ferromagnetic domain.

Area is a quantity that measures the size of a two-dimensional surface or shape. It is expressed in square units such as square centimetres (cm2), square metres (m2) or square kilometres (km2). Area is used to describe the size of a garden, a house, a room, a city and much more. It can also be used to calculate the amount of material required for a project, such as paint, carpet or tiles. Knowing the area of a shape can help to calculate costs, and to make sure that enough materials are ordered.

In a domain, all the atoms are aligned in the same direction, creating a powerful magnetic field. This magnetic field is responsible for the magnetic properties of materials such as iron and nickel. When a ferromagnetic domain is exposed to an external magnetic field, it will become magnetized and align itself in the same direction. The strength of the magnetic field produced is based on the number of atoms in the domain and the alignment of the atoms.

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Answer:

A large constant force acting over a long time interval causes a large change in  momentum.

Explanation:

The two reasons why a home computer scanner requires electromagnetic waves to operate are

C. The charge-coupled device contains a silicon chip that releases electrons by the photoelectric effect, producing an image.

D. Visible light needs to reflect off an object and be captured by a charge-coupled device.

The waves that may go through vacuum space are electromagnetic waves. Magnetic and electrical components are present in electromagnetic waves.

All of them move at the speed of light. The atoms of the material absorb and reemit wave energy as part of the energy transport process through a medium. To transfer their energy from one place to another, mechanical waves need a medium to move through.

Therefore, the correct options are c and d.

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Answer:

The drawdown in a confined aquifer under transient conditions can be estimated using the Theis solution for the non-equilibrium radial flow of water. This solution is given by:

s = Q / (4πT) * W(u),

where s is the drawdown, Q is the pumping rate, T is the transmissivity, and W(u) is the well function (also called the Theis function) which depends on the variable u, where:

u = r²S / (4Tt),

where r is the distance from the pumping well and t is the time since pumping began.

Given T = 2500 m²/day, S = 1.0 x 10-3, and Q = 500 m³/day, we can calculate the drawdown at 10 m (r1 = 10 m) and 50 m (r2 = 50 m) for t = 150 days.

For (i) r1 = 10 m:

u1 = r1²S / (4Tt) = (10 m)² * 1.0 x 10-3 / (4 * 2500 m²/day * 150 days) = 0.000667

s1 = Q / (4πT) * W(u1) = 500 m³/day / (4π * 2500 m²/day) * W(0.000667).

For (ii) r2 = 50 m:

u2 = r2²S / (4Tt) = (50 m)² * 1.0 x 10-3 / (4 * 2500 m²/day * 150 days) = 0.01667

s2 = Q / (4πT) * W(u2) = 500 m³/day / (4π * 2500 m²/day) * W(0.01667).

Explanation:

Unfortunately, the well function W(u) cannot be evaluated directly without more specialized knowledge or tools. The well function is related to the exponential integral function, which requires numerical computation. You would typically use a table of values, a calculator with this function, or a computer program to evaluate it. After obtaining W(u), multiply it by the remaining fraction to find the drawdowns.

Answer:

The distance covered is 5250 meters

Explanation:

Motion With Constant Acceleration

It's a type of motion in which the velocity of an object changes uniformly in time.

The change of velocities is given by the following equation :

\(v_f=v_o+at\qquad\qquad [1]\)

Where:

a   = acceleration

vo = initial speed

vf  = final speed

t    = time

The distance traveled by the object is given by:

\(\displaystyle x=v_o.t+\frac{a.t^2}{2}\qquad\qquad [2]\)

Solving [1] for a:

\(\displaystyle a=\frac{v_f-v_o}{t}\)

The car changes its speed from vo=54 Km/h to vf=72 Km/h in t=5 minutes. Let's convert all to meters and seconds.

vo=54 Km/h * 1000/3600 = 15 m/s

vf=72 Km/h * 1000/3600 = 20 m/s

t = 5 min * 60 = 300 s

Now we calculate the acceleration:

\(\displaystyle a=\frac{20-15}{300}\)

\(\displaystyle a=\frac{5}{300}\)

\(a=0.0167\ m/s^2\)

Now for the distance:

\(\displaystyle x=15*300+\frac{0.0167*300^2}{2}\)

\(\displaystyle x=4500+750=5250\)

x = 5250 m

Note: We have shown only some of the decimals for the acceleration, but we have used all the decimals stored in the calculator to present accurate results.

The distance covered is 5250 meters

First find time taken to reach submarine

\(\\ \bull\tt\dashrightarrow t=\dfrac{80}{2}=40s\)

\(\\ \bull\tt\dashrightarrow Distance=Velocity \times Time\)

\(\\ \bull\tt\dashrightarrow Distance=1460(40)\)

\(\\ \bull\tt\dashrightarrow Distance=58400m\)

\(\\ \bull\tt\dashrightarrow Distance=58.4km\)

Answer:

116800 meters away i think:)

Explanation:

A) Activation barrier for the reaction is 142.4 kJ/mol. B) The rate constant at 18 ∘C is 6.04×10^(-7) s^(-1) using the Arrhenius equation.

A)

To find activation barrier for the reaction, we can use the Arrhenius equation relating rate constant to temperature and activation energy.

\(k = A * e^(-Ea/RT)\)

k: rate constant, A: pre-exponential factor or frequency factor, Ea: activation energy, R: gas constant, and T: temperature in Kelvin.

Take log on both sides of the equation:

\(ln(k1/k2) = (Ea/R) * [(1/T2) - (1/T1)]\)

k1, k2 are rate constants at temperatures T1, T2

Put in values:

\(ln(0.230/1.25*10^(-4)) = (Ea/8.314) * [(1/351) - (1/301)]\)

Ea = 142.4 kJ/mol

Activation barrier is: 142.4 kJ/mol.

B)

To find value of rate constant at 18 ∘C, we use Arrhenius equation.

Substitute:

\(k = A * e^(-Ea/RT) = 6.04*10^(-7) s^(-1)\)

Rate constant at 18 ∘C is \(6.04*10^(-7) s^(-1)\).

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Answer:

D. electromagnetic forces

Explanation:

The Pythagorean Theorem states that the squares on the hypotenuse (the side across from the right angle) of a right triangle, or, in standard algebraic notation, a2 + b2, are equal to the squares on the legs.

The Pythagorean theorem, sometimes known as Pythagoras' theorem, is a fundamental relationship between a right triangle's three sides in Euclidean geometry. According to this rule, the areas of the squares on the other two sides add up to the area of the square whose side is the hypotenuse, or the side across from the right angle. The Pythagorean equation, which is typically used to express this theorem, can be expressed as an equation linking the lengths of the legs (a, b), and the hypotenuse (c):

There are several ways to generalize the theorem, including to higher-dimensional spaces, non-Euclidean spaces, objects other than right triangles, and even things that are not triangles at all but n-dimensional solids. The Pythagorean theorem has garnered interest outside of mathematics as a representation of mathematical mystique, power, or obscurity; there are numerous references to it in popular works of fiction, dramas, musicals, songs, stamps, and cartoons.

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Answer:

Using g = 9.8: 1.02 kg, Using g = 10: 1 kg

Explanation:

E = mgh

20 = m(9.8)(3 - 1)

20 = 9.8m(2)

20 = 19.6m

m = 1.02 kg

I'm now assuming you may be using a g constant of 10, thus the close integer result, in which case the mass would be exactly 1 kilogram.

So, the impulse of the ball to the wall is -12 N. It have same meaning to 12 N in opposite direction with its initial movement.

Hi ! In this ocassion, I will help you to solve the question about impulses. Impulse also relate to momentum, where the amount of impulse will cause the difference (indicated in units of direction) velocity when an object move. Impulses that have opposite direction to the original direction will have a negative value.

Impulse is the result of a change in momentum, so it can be expressed in this formula :

\(\sf{I = \Delta p}\)

\(\boxed{\sf{\bold{I = m (v' - v_0)}}}\)

With the following condition:

\(\sf{I = m (v' - v_0)}\)

\(\sf{I = 0.15 (-30 - 50)}\)

\(\sf{I = 0.15 (-80)}\)

\(\boxed{\sf{I = -12 \: N.s}}\)

So, the impulse of the ball to the wall is -12 N. It have same meaning to 12 N in opposite direction with its initial movement.

Intermodulation products in a linear power amplifier can have several effects, including signal distortion and unwanted interference.

Intermodulation products are the result of nonlinearities within the amplifier, where multiple input signals mix and produce additional frequencies that are not present in the original signals. These additional frequencies can fall within the desired frequency range, causing distortion and degradation of the output signal.

The presence of intermodulation products leads to intermodulation distortion (IMD). IMD introduces unwanted spurious signals, creating interference in the form of additional frequencies that can interfere with other nearby signals or frequencies. This interference can affect the performance of other devices or systems operating in the vicinity.

To minimize intermodulation distortion, it is essential to design and operate linear power amplifiers within their linear operating range. Nonlinearities in the amplifier, such as saturation or overload conditions, should be avoided or minimized. Proper filtering and signal conditioning techniques can also help reduce intermodulation products and mitigate their negative effects.

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Answer:

15 mph

Explanation:

45/3=15

Answer:

45

Explanation:

do the math

Answer:

the answer is a because I saw it in a syllabus

Answer:

just doing this so you can give brainliest to the other person

have a great day!

Explanation:

Answer:

d) harvesting and threshing both.

Explanation:

Hope it helps you...

A flowchart and write its pseudocode to convert temperature from Celsius to Fahrenheit is shown below.

The pseudocode for a program that requests for a number (temperature) from an end user, converts temperature from Celsius to Fahrenheit, and then prints or outputs (displays) the converted temperature to the user is written below.

In this context, a pseudocode to convert temperature from Celsius to Fahrenheit can be written as follows;

START

         Input "Enter a number" into variable F

         F = (9/5)C + 32

         PRINT C

STOP

In conclusion, we would use Microsoft Visio to create a flowchart that converts temperature from Celsius to Fahrenheit as shown in the image attached below.

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The average horizontal force applied on the gate from the lake water. will be 882.9 kN

Force is defined as the external agent applied to any object which tries to displace the body from one place to another or resist the body movement.

Given,

width of gate, W = 5 m

depth of the lake, h = 6 m

density of water = 1000 kg/m³

Atmospheric pressure = 101 kPa

Pressure at the bottom of the gate will be calculated as below:-

P = ρ g h

P = 1000 x 9.81 x 6

P = 58860 Pa

Now, Force acting on the plate is

F = ( 1 / 2)pwh

F = ( 1 / 2 ) x 58860 x 5 x 6

F = 882900 N

F = 882.9 k N

The average horizontal force applied on the gate from the lake water is equal to F = 882.9 kN

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Speed of the wave will be = 129 m/s

given

mass = 60 g = 0.06 kg

length = 2 m

wave speed  = v = \(\sqrt{\frac{T}{mu} }\)

T = Tension of the rope = 500 N

mu = linear mass density

mu = mass / length

     = 0.06 / 2 = 0.03 kg/m

v = \(\sqrt{\frac{500}{0.03} }\) = 129 m/s

speed of the wave will be = 129 m/s

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In a food web, the removal of any trophic level upsets the balance within the web and can cause its eventual collapse. Because producers capture solar energy and convert it to food energy, their loss would affect every other level of the food web.

The removal of the producers would cause the collapse of the entire food web. Primary consumers or herbivores, which feed on producers directly, would die off. The next to be affected would be the secondary consumers or carnivores that eat the primary consumers. Higher level consumers would suffer as organisms from lower trophic levels start to die off. Decomposers would break down the bodies of dead organisms, returning their basic elements and compounds to the environment. However, even these dead organisms would run out and the entire food web would collapse.

Hope you like the answer.

Sure! Here are the steps for calculating the velocity and distance traveled by the car after 50 seconds :

Step 1: Calculate the velocity using the equation:

\(v = u + at\)

where:

- \(v\) is the final velocity

- \(u\) is the initial velocity (0 m/s, as the car starts from rest)

- \(a\) is the acceleration (3 m/s²)

- \(t\) is the time (50 seconds)

Substituting the values into the equation:

\(v = 0 + (3 \, \text{m/s²}) \times (50 \, \text{s})\)

Step 2: Calculate the distance traveled using the equation:

\(s = ut + \frac{1}{2}at^2\)

where:

- \(s\) is the distance traveled

- \(u\) is the initial velocity (0 m/s)

- \(a\) is the acceleration (3 m/s²)

- \(t\) is the time (50 seconds)

Substituting the values into the equation:

\(s = 0 \times (50 \, \text{s}) + \frac{1}{2} \times (3 \, \text{m/s²}) \times (50 \, \text{s})^2\)

Now, let's simplify these equations:

\(v = 3 \times 50\)

\(s = \frac{1}{2} \times 3 \times 50^2\)

Calculating the results:

\(v = 150\) m/s

\(s = 3750\) meters

Therefore, after 50 seconds, the car will have a velocity of 150 m/s and would have traveled a distance of 3750 meters.

The time taken for the plane to fly between the two research stations at the given relative velocity is determined as 1.67 hours.

The relative speed of the research plane is calculated by applying the following equation below.

Mathematically, the formula for relative speed is given as;

Vr = Vp - Vw

where;

Vr = 450 km/h - 300 km/h

Vr = 150 km/h

The time taken for the plane to fly between two research stations is calculated as follows;

Distance = speed x time

time = distance / speed

time = 250 km / 150 km/h

time = 1.67 hours

Thus, the time taken for the plane to fly between the two research stations that are 250 km apart depends on the relative velocity and distance between the stations.

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A 12 volt car battery will produces more current than a 1.5 volt battery for a TV remote because the car battery has a greater difference in electric potential energy than a 1.5 Volt battery. The correct answer is D

The potential difference between any two point in a circuit is the work done when one coulomb of charge moves from one point to the other. Potential difference is a kind of electrical pressure difference between two point.

The difference in electric potential in a 12 Volt battery is greater than the difference in electric potential in a 1.5 Volt battery.

According to Ohm's law, Voltage supplied is proportional to current produced. That is, V = lR. Where R = resistance.

A 12 volt car battery will produces more current than a 1.5 volt battery for a TV remote because the car battery has a greater difference in electric potential energy than a 1.5 Volt battery.

Therefore, the correct answer is the option D

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