The approach that makes use of rational and systematic reasoning to answer the great questions of life and existence is known as:________

Answer:

1 Ohm

Explanation:

Resistance: Voltage/Current

R: 1.5/ 1.5 = 1 Ohm

Answer: 1350J

Explanation:

To solve this, we are going to use the formula for calculating potential difference which is:

Potential difference (V) = Work done (W) / Total charge (C)

Therefore,

9 volts = Work done / 150

Work done = 150 × 9 = 1350J

Answer:

Explanation:

The density of a substance can be found by using the formula

\(density = \frac{mass}{volume} \\ \)

From the question

mass = 0.7 kg

volume = 1 L

We have

\(density = \frac{0.7}{1} \\ \)

We have the final answer as

Hope this helps you

Answer:

Not testable.

Explanation:

The temperature of coffee can change, as the coffee gains or loses heat to the surroundings or the room temperature. For example, if you put a hot coffee in a cold room, the coffee will lose heat to the surroundings/room temperature, eventually making it colder.

answer✿࿐

I was not able to write it here

so I did it somewhere else and attached the picture

i hope it helps

have a nice day

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Answer: liquids take the shape of the container they are in, but have definite volume. like liquids the shape of a gas changes with the container. unlike liquids the volume of a gas changes depending on the container it is in

Explanation:

Answer:

liquids flow freely, they take the shape of the container they are in, but have a definite volume. Like liquids, the shape of a gas changes with the container. This is because the atoms in a gas move rapidly and freely to fill any available space. Unlike liquids, the volume of a gas changes depending on the container it

Explanation

Answer:

the Virgo consentellation

Explanation:

Answer:

b

Explanation:because think about it its going straight so you have to coiunt the miles the train is going and boom your answer is b

Answer:

It would be choice b

Explanation:

speed is constant so they value won't change, on the other hand time is always going.

Both the acceleration and the string's tension will be equal to 2.2 m/s2 of acceleration and 27 N, respectively.

An object's motion is altered by a force applied; the larger the positive force, more more acceleration it experiences. To speed at the same rate as less massive objects, higher net forces are needed.

The weight of the mass immediately to the left slopes downward by

W₁ = 3.5 kg × 9.8 m/s² × sin35° = 19.7 N

The weight of the mass immediately to the right slopes downhill by

W₂ = 8 kg × 9.8 m/s² × sin35° = 45.0 N

As a result, the slope is being pulled to the right by a net force of 25.3 N.

(a)

F(f) = 25.3 N = µ (m₁ + m₂)g cos θ

= µ × 11.5 kg × 9.8 m/s² × cos35°

25.3 N = µ × 92.3 N

µ = 0.274

(b)

Total mass = 11.5 kg, and

The net force = 25.3 N

Acceleration a = F / m

= 25.3 N / 11.5 kg

= 2.2 m/s²

Tension, T = 8 kg × (9.8sin35 - 2.2) m/s²

T = 27 N

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An electrical circuit refers to the combination of various electrical components that are connected together. - True

An electrical circuit refers to the combination of various electrical components that are connected together in a closed loop, thereby allowing electrons to flow through the circuit. Electrical circuits are essential for the operation of most electronic devices and are made up of a variety of components such as resistors, capacitors, inductors, and transistors.

These components are connected together using conductive materials. The conductive material is generally the copper wire which is used to create the circuit. The flow of electrons through the circuit can be controlled and manipulated using various techniques, such as switching and modulation, to perform a wide range of functions.

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The correct options are (a) and (c) .Increasing the average speed of gas molecules in a closed rigid container will result in an increase in the gas pressure and a decrease in its density. This is due to the increased frequency and force of molecular collisions.

If the average speed of the gas molecules in a closed rigid container is increased, it will have several effects on the gas properties. The gas will first become less dense.

This is because the increased speed of the molecules will cause them to spread out more, resulting in a decrease in the number of molecules per unit volume.

Second, the pressure of the gas will increase. The increased speed of the molecules will result in more frequent and forceful collisions with the walls of the container, leading to an increase in the overall pressure exerted by the gas.

Third, the temperature of the gas will increase. The increase in average speed of the molecules is directly related to an increase in kinetic energy, which is a measure of temperature.

Therefore, as the speed of the molecules increases, the temperature of the gas will also increase.

In conclusion, if the average speed of gas molecules in a closed, rigid container increases, the density of the gas decreases, the pressure of the gas rises, and the temperature of the gas rises.

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Answer:

2 ZnS + 3O2 ---> 2ZnO + 2 SO2

Explanation:

2 ZnS + 2O2 ---> 2ZnO + SO2

There are 2 Zn atom on the LHS and 2 Zn on the RHS. Hence the Zn is balanced on both sides of the equation.

There are two S atom on the LHS but there is only one S atom on the RHS.

Hence we will balance the S atoms

2 ZnS + 2O2 ---> 2ZnO + 2 SO2

Now the oxygen is unbalanced as there are three oxygen molecule on the RHS but only two on the LHS.

Hence, the balanced equation would be

2 ZnS + 3O2 ---> 2ZnO + 2 SO2

Answer:

it is 17 dollars .

Explanation:

I had a test like this and I remember the qeustions

A 9.0-V battery costs $3.00 and will deliver 0.0250 A for 26.0 h before it must be replaced. then the cost per kWh is $512.82.

Energy is nothing but the ability to do work. there are different energies in different form which are thermal energy, mechanical energy, electric energy and sound energy etc. According to first law of thermodynamic, Energy neither be created nor be destroyed. it can only be transferred from one form into another form. Energy is expressed in joule (J). its dimensions are [M¹ L² T⁻²].

The energy delivered by the battery can be calculated using the formula:

energy = power x time

where power is the product of voltage and current, and time is given in hours.

The power delivered by the battery is:

power = voltage x current = 9.0 V x 0.0250 A = 0.225 W

The time for which the battery will deliver this power is 26.0 hours.

So, the energy delivered by the battery is:

energy = power x time = 0.225 W x 26.0 h = 5.85 Wh

To convert Wh to kWh, we divide by 1000:

energy = 5.85 Wh ÷ 1000 = 0.00585 kWh

The cost per kWh can be calculated by dividing the cost of the battery by the energy delivered, and then multiplying by 1000 to convert to dollars per kWh:

cost per kWh = (3.00 dollars / 0.00585 kWh) x 1000 = 512.82 dollars/kWh (rounded to two decimal places)

Therefore, the cost per kWh for this battery is $512.82.

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According to Heisenberg's Uncertainty Principle, it is impossible to determine the position and momentum of a particle with absolute certainty at the same time. The Uncertainty Principle is defined as Δx * Δp ≥ h/4π, where Δx is the uncertainty in position, Δp is the uncertainty in momentum, and h is Planck's constant.
For the given problem, the uncertainty in position of a proton with mass 1.673 x 10-27 kg and kinetic energy 1.2 keV can be calculated as follows:

We know that the momentum p of a particle is given by p = mv, where m is the mass of the particle and v is its velocity.
The kinetic energy of the proton can be converted to momentum using the equation E = p²/2m, where E is the kinetic energy.
1.2 keV = (p²/2m)    (1 eV = 1.6 x 10^-19 J)
p²/2m = 1.92 x 10^-16 J
The momentum p of the proton can be calculated by taking the square root of both sides:
p = √(2mE) = √(2 x 1.673 x 10^-27 x 1.6 x 10^-16) = 7.84 x 10^-22 kg m/s

Using Heisenberg's Uncertainty Principle, we can calculate the uncertainty in position as follows:
Δx * Δp ≥ h/4π
Δx ≥ h/4πΔp
Substituting the values of h, Δp, and solving for Δx:
Δx ≥ (6.626 x 10^-34)/(4π x 7.84 x 10^-22)
Δx ≥ 2.69 x 10^-12 m

Therefore, the uncertainty in position of the proton is 2.69 x 10^-12 m.

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Answer:

ΔV=Vi + Vf

           2

ΔV= 11m/s + 19m/s

                 2

ΔV= 15m/s

Explanation:

d = vi*t + 0.5*a*t. equation should you use to solve this problem

Speed is the overall distance an item travels in a given amount of time. It is solely based on the size of the moving item. Meter/second is the measurement of speed. A metre per second is the commonly used measurement of speed.

The following is the mathematical formula for speed:

speed equals entire distance / total time

As stated in the challenge, Superman is travelling at 54.5 m/s when he notices a train 850 metres away that is about to crash into a river. In 4.22 seconds, he arrives to the train.

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Explanation:

a) i) Calculation of the friction force:

The friction force can be determined using the equation:

friction force = coefficient of friction * normal force

The normal force is equal to the weight of the object, which can be calculated as:

normal force = mass * gravitational acceleration

where the gravitational acceleration is approximately 9.8 m/s².

normal force = 75 kg * 9.8 m/s² = 735 N

friction force = 0.4 * 735 N = 294 N

ii) Calculation of the acceleration of the body:

Now, we can calculate the acceleration using Newton's second law:

net force = mass * acceleration

Since the applied force and the friction force act in opposite directions, the net force can be calculated as:

net force = applied force - friction force

net force = 300 N - 294 N = 6 N

mass = 75 kg

6 N = 75 kg * acceleration

acceleration = 6 N / 75 kg = 0.08 m/s²

b) Explanation:

In part (a), we calculated the friction force to be 294 N and the acceleration of the body to be 0.08 m/s². The positive acceleration indicates that the body is moving in the direction of the applied force.

The friction force opposes the motion of the body and acts in the opposite direction to the applied force. In this case, the applied force of 300 N is greater than the friction force of 294 N. As a result, the net force acting on the body is 6 N in the direction of the applied force.

The small net force of 6 N, compared to the body's mass of 75 kg, results in a relatively low acceleration of 0.08 m/s². This indicates that the body will accelerate slowly in the direction of the applied force due to the presence of friction.

Overall, the friction force and the resulting acceleration of the body are determined by the coefficient of friction (μ) and the mass of the object. In this case, the body experiences a relatively high friction force, leading to a small acceleration.

The orbital period of the satellite circling the Earth at an altitude of 3500 km is 163 minutes

The orbital period for the satellite circling the Earth at an altitude of 3500 km can be obtained as follow:

T² = (4π² / GM) × a³

T² = [(4 × 3.14²) / (6.67×10¯¹¹ × 5.987×10²⁴)] × 9900000³

Take the square root of both sides

T = √[((4 × 3.14²) / (6.67×10¯¹¹ × 5.987×10²⁴)) × 9900000³]

T = 9789.15 s

Divide by 60 to express in minutes

T = 9789.15 / 60

T = 163 minutes

Thus, we can conclude that the orbital period of the satellite is 163 minutes

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Answer:

Explanation:

20

Answer:

i did this project where i took two marbles pool noodles and tape then i made a ramp and i saw which marble would go down faster the big marble or the little marble hope this helps!!

Answer:

             air       water      iron        helium

v(m/s)   280     2200      17780     39682

Explanation:

The speed of a wave depends on the physical properties of the medium where it travels, in the case of a longitudinal wave such as sound, it depends on the resistance to deformation (volume modulus and the density of the medium

         v = \(\sqrt{ \frac{B}{ \rho } }\)

in the mentioned materials they are constant  

             air       water      iron        helium

B           1 10⁵    2.2 10⁹    140 10⁹   0.05 10⁹

ρ           1.28     997        7874       1.26

v(m/s)   280     2200      17780     39682

June 21-22 is the summer solstice in the Northern Hemisphere and the winter solstice in the Southern Hemisphere. On these days, the daylight hours are the longest at the North Pole and the shortest at the South Pole.

Using online tools or astronomical calculations, we can determine the length of daylight for each of the given latitudes:

90 degrees N latitude (North Pole): 24 hours of daylight (the sun does not set)

40 degrees S latitude: 9 hours and 39 minutes of daylight

40 degrees N latitude: 14 hours and 55 minutes of daylight

0 degrees latitude (equator): 12 hours of daylight (the sun rises at 6:00 am and sets at 6:00 pm)

Note that these values are approximate and may vary slightly depending on the exact location and year.

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Answer:

ALL OF THE ABOVE

Explanation:

A vehicle undergoes acceleration when what three things happen?

If there is acceleration, the velocity will change, either increasing or decreasing. The correct answer is D.

The rate of growth of velocity is defined as acceleration. Acceleration usually indicates that the speed is changing, but this is not always the case. When an object is in motion in a circular track at a steady speed, it is still going to accelerate because its velocity direction changes.

Newton's Second Law states that an object's acceleration is the net result of all force applied to it. Acceleration is measured in meters per second squared.

The formula is given as,

a = Δv / Δt

If acceleration exists, the change of the velocity will be there and it may be increasing or decreasing. Then the correct option is D.

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To magnify the sweetness of foods without boosting their calories, one could use natural sweeteners such as honey, agave nectar, stevia, or monk fruit extract.

These alternatives have a low glycemic index and do not result in blood sugar spikes. Another method of magnifying the sweetness of foods is by using spices such as cinnamon, nutmeg, or cardamom that can provide a warm and sweet flavour without adding any calories. Finally, one could add fruits that are naturally sweet like strawberries or bananas.

When trying to enhance the sweetness of foods without adding calories, there are several techniques to use. Natural sweeteners, including honey, agave nectar, stevia, or monk fruit extract, are one way to do it. They have a low glycemic index and won't spike blood sugar levels. So, they're an excellent alternative for individuals who want to reduce their sugar intake without sacrificing sweetness.

Spices such as cinnamon, nutmeg, or cardamom can also be used to enhance sweetness. They provide a warm, sweet flavor without adding any calories. In addition to natural sweeteners and spices, adding naturally sweet fruits, such as strawberries or bananas, is a good way to magnify the sweetness of your food.

Using artificial sweeteners is not recommended, as they may have detrimental effects on one's health. For example, artificial sweeteners like aspartame and saccharin may cause headaches and other health issues. As a result, they should be avoided. By using natural sweeteners and spices or adding fruits, one can enjoy the flavor and sweetness of food without adding calories.

In conclusion, by using natural sweeteners, spices, or fruits, one could enhance the sweetness of their food without increasing the number of calories. It's always preferable to avoid artificial sweeteners since they may have a detrimental impact on one's health.

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The temperature at which a line intersects the x-axis can be determined by setting the dependent variable to zero and solving the equation, while the corresponding volume can be found by substituting the temperature back into the equation and solving for the volume.

In general, when a line intersects the x-axis, it means that the dependent variable (usually represented on the y-axis) has a value of zero.

To find the temperature at which this occurs, we need to identify the equation or relationship between temperature and another variable.

Once we have the equation, we can set the dependent variable (usually volume in this case) equal to zero and solve for the temperature. This will give us the temperature at which the line intersects the x-axis.

To determine the corresponding volume, we substitute the temperature value obtained from the previous step back into the equation and solve for the volume. This will give us the volume corresponding to the temperature at which the line intersects the x-axis.

It's important to note that without specific information about the equation or relationship, we cannot provide numerical values for the temperature or volume.

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Answer:

Power = 2940 Watts

Explanation:

Given the following data;

Mass = 60 kg

Height = 300 meters

Time = 1 minutes = 60 seconds

To find the power;

First of all, we would determine the potential energy possessed by the person due to height.

We know that acceleration due to gravity is equal to 9.8 m/s².

Potential energy can be defined as an energy possessed by an object or body due to its position.

Mathematically, potential energy is given by the formula;

\( P.E = mgh\)

Where,

P.E represents potential energy measured in Joules.

m represents the mass of an object.

g represents acceleration due to gravity measured in meters per seconds square.

h represents the height measured in meters.

Substituting into the formula, we have;

P.E = 60 * 9.8 * 300

P.E = 176400

Next, we find the power using the following formula;

Power = energy/time

Power = 176400/60

Power = 2940 Watts

A bullet is fired upward with an initial velocity of 100 m/s. What will be it’s velocity when it hit the ground?

Zero. It is sitting on the ground.   This would almost always “assume” a friction-less environment where the only force acting on the bullet is gravity.  In this case, it would be 100 m/s immediately before hitting the ground. (zero once it comes to rest)

Answer:

f  = ma

35 x 9.8 ( acceleration of gravity ) = 343 Newtons

Explanation:

Im not entirely sure sry

The correct order of occurrence as a star forms:

A star is a massive, luminous celestial object that is held together by its own gravity and emits light and other forms of radiation. Stars are formed from clouds of gas and dust that collapse under the force of gravity, and as the cloud collapses, it heats up and ignites, triggering a nuclear fusion reaction that produces immense amounts of energy. This energy is released in the form of light and heat, which radiate outwards into space.

Stars come in a variety of sizes, colors, and temperatures, and they play a crucial role in the universe by creating and distributing heavy elements, which are essential building blocks for planets, life, and the universe as a whole. They also provide energy for photosynthesis, which is the foundation of most ecosystems on Earth.

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1. dependant variable

2. graph

3. model

4. experiment

6. scientific law

9. hypothesis

11. independent variable

12. theory

14. volume

15. society