Given the scenario and assuming ideal gas behavior, to ensure both gases run out at the same time, you should fill the acetylene tank to a pressure of approximately 224 atm.
Explanation:For gases behaving ideally, the pressure, volume, and temperature are related by the Ideal Gas Law (PV = nRT). However, in this problem, we assume temperature and gas constant are the same for both gases. Hence, the amount of gas (in moles) is directly proportional to the product of pressure and volume (PV).
Now you want to calculate the pressure in the acetylene tank that ensures both gases run out at the same time. Since both gas tanks will be opened for the same timeframe, the amounts of each gas in moles used will be the same. Hence, the products of pressure and volume will also be equal for both tanks (PV of oxygen tank = PV of acetylene tank).
In other words, (Pressure of oxygen) x (Volume of oxygen) = (Pressure of acetylene) x (Volume of acetylene). By inserting given values for oxygen (Pressure = 155 atm, Volume = 6.50 L) and the volume of acetylene (4.50 L), you can solve for the pressure in the acetylene tank.
From this equation, Pressure of acetylene = (Pressure of oxygen) x (Volume of oxygen) / (Volume of acetylene) = 155 atm x 6.50 L / 4.50 L = 223.88 atm.
Therefore, to ensure you run out of both gases at the same time, you should fill the acetylene tank to a pressure of approximately 224 atm.
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Several resistors are connected in series. which of the following statements is correct? choose all that are correct.
Resistors connected in series have a total resistance greater than any individual resistor and equal to the sum of all individual resistances. Statement (b) is incorrect, as are (c) and (e), which don't apply to series circuits.
When several resistors are connected in series, the correct statements are as follows:
(a) The total series resistance is greater than the resistance of any of the individual resistors.
(d) The total series resistance is equal to the sum of the resistances of all the individual resistors.
Statement (b) is incorrect because the total resistance of a series circuit cannot be less than any individual resistor's resistance. Statement (c) is also incorrect; while the total current through the circuit is dependent on the applied voltage, the total resistance itself is not dependent on the voltage but only on the value of the resistors in series. Lastly, statement (e) describes the calculation for total resistance in a parallel circuit, not a series circuit.
Which of the following could you do to increase the strength of an electromagnet? decrease the number of windings
decrease the electric current
change the core from wood to iron
all of the above
change the core from wood to iron
A sled and rider, gliding over horizontal, frictionless ice at 4.3 m/s , have a combined mass of 74 kg . the sled then slides over a rough spot in the ice, slowing down to 2.9 m/s . part a what impulse was delivered to the sled by the friction force from the rough spot?
When a neutral metal sphere is charged by contact with a positively charged glass rod, the sphere
(1) loses electrons
(2) gains electrons
(3) loses protons
(4) gains protons
Why is it important to make healthy choices about your diet and exercise?
Final answer:
Regular exercise, combined with a healthy diet, offers a myriad of health benefits, from disease prevention to cognitive enhancement.
Explanation:
Regular physical exercise is essential in preventing various diseases such as cardiovascular disease, cancer, diabetes, and obesity. Muscle health and strength significantly improve with consistent exercise.
When combining exercise with a healthy diet, individuals are less likely to be obese and experience benefits such as improved cardiovascular health, lowered blood pressure, enhanced diabetes management, joint flexibility, and muscle strength.
Exercise not only influences physical health but also slows cognitive impairments associated with aging, showcasing the holistic benefits of staying physically active throughout life.
An electric field of 3 × 1016 is needed to create a spark in the air. If the charged particles in the field are separated by a distance of 1 mm, how many coulombs of charge are needed for a spark?
Answer:
There are 3.34 C of charge are needed to spark.
Explanation:
Given that,
Electric field, [tex]E=3\times 10^{16}\ N/C[/tex]
If the charged particles in the field are separated by a distance of 1 mm, d = 1 mm
The electric field is given by the formula as follows :
[tex]E=\dfrac{kq}{d^2}[/tex]
q is charge
[tex]q=\dfrac{Ed^2}{k}\\\\q=\dfrac{3\times 10^{16}\times (1\times 10^{-3})^2}{9\times 10^9}\\\\q=3.34\ C[/tex]
So, there are 3.34 C of charge are needed to spark.
Answer:
The correct answer is 3.
Explanation:
a student pushes a 40-N block across the floor for a distance 0f 10 m how much work was done to move the block?
alcohol use for can cause feel alcohol syndrome in the unborn fetus? true or false
Answer:
True
Explanation:
what's the method for displacement in physics. I NEED HELP ASAP
Which one of the following statements best describes the just world hypothesis?
The statement that best describes the just world hypothesis is people deserve what happens to them, whether good or bad. The correct option is a.
What is a hypothesis?A hypothesis is a testable declaration about the relationship among two or more variables or a suggested explanation for some observed phenomenon in a scientific context.
A hypothesis is an assumption formed based on evidence. This is the first step in any investigation that converts research questions into predictions. It consists of variables, a population, and the relationship between the variables.
A hypothesis is a statement rather than a question. The scientific question in your project is not your hypothesis. The hypothesis is a well-informed, testable prediction of what will occur.
A scientific paper should begin with a clear statement of the hypothesis. This helps the reader understand the issue. People deserve what happens to them, whether good or bad, according to the statement that best describes the just world hypothesis.
Thus, the correct option is a.
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Your question seems incomplete, the missing options are:
a. People deserve what happens to them, whether good or bad.
b. If people act with integrity, they contribute to a just world.
c. The world is just, but some people don't think it is.
d. People who work hard are superior to those who are lazy. User: If you exhibit a high level of psychological hardiness, you're probably the type of person who
A buoy is anchored to the ocean floor. A large wave approaches the buoy. How will the buoy move as the wave goes by?
The buoy will be moved by the force exerted on it by the waves.
Explanation
As the buoy is anchored to the ocean floor, the buoy will be floating in the ocean floor.
When the large wave approaches, it will act as an external unbalanced force on the buoy.
The waves will consist of crest and trough.
The crest region have higher force. So the crest will first interact with the buoy and the external force of crest will make the buoy to float upward along with the motion of crest.
Then the trough region will lessen the force and thus it will again come back in its original position.
A light bulb that is connected to a 120 V source drawers 1.7 A. What is the resistance of the light bulb?
A. 14
B. 71
C. 200
D. 0.014
E. 0.0
The resistance of the light bulb is calculated using Ohm's law, which gives approximately 70.59 ohms. The closest given answer choice is B. 71 ohms.
To calculate the resistance of the light bulb that is connected to a 120 V source and draws 1.7 A, we use Ohm's law, which states that Resistance (R) is equal to Voltage (V) divided by Current (I).
R = V / I
Therefore, the resistance of the light bulb is R = 120 V / 1.7 A, which equals approximately 70.59 ohms. When checking against the provided answers, the closest value is 71 ohms. So the correct answer is B. 71.
22. a = v1-v2/t equation is the equation for calculating the acceleration of an object. Write out the relationship shown in the equation, using words. (2 points) Please I will give a MEDAL !!
why does water feel cool when it evaporates
Basically, when water evaporates, it always absorbs energy. What happens is that a molecule steals surface energy for all molecules until it is hot enough to evaporate. This is how the evaporation process happens. For this reason, the surface cools because the molecules steal the heat from the medium. This can easily be noticed when we sweat and after the water molecules evaporate from our body, it cools.
The water feels cool when it evaporates because the process of evaporation requires energy, and that energy is drawn from the surrounding environment, including our skin.
When water molecules evaporate, they transition from the liquid phase to the gas phase, escaping the surface of the water. During this phase transition, water molecules gain energy from their surroundings to overcome the intermolecular forces holding them together in the liquid. This energy absorption leads to a cooling effect on the surrounding environment.
When water evaporates from our skin, it draws heat energy from our body, which makes us feel cooler.
Overall, the cooling sensation when water evaporates is a result of energy transfer, where the water molecules gain energy from their surroundings, leading to a cooling effect on the surrounding objects or our bodies.
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Jake uses a fire extinguisher to put out a small fire. When he squeezes the handle, the flame rettardant is released from the extinguisher with considerable force. As a result, Jake has to reinforce his grip on the extinguisher to hold it in place as it pushes back into his hands. The projectile in this scenario is the . The recoil in this scenario is the . The force on the flame rettardant is the force on the extinguisher. The mass of the flame rettardant is the mass of the extinguisher. The acceleration of the flame rettardant is the acceleration of the extinguisher.
The projectile in this scenario is the flame r.
The recoil in this scenario is the extinguisher.
The force on the flame r is equal to the force on the extinguisher.
The mass of the flame r is less than the mass of the extinguisher.
The acceleration of the flame r is greater than the acceleration of the extinguisher.
Answer:
The projectile in this scenario is the flame r.
The recoil in this scenario is the extinguisher.
The force on the flame r is equal to the force on the extinguisher.
The mass of the flame r is less than the mass of the extinguisher.
The acceleration of the flame r is greater than the acceleration of the extinguisher.
When Jamie removes a woolen cap, his hair develops an excess of static charge Which of these BEST explains this phenomenon?
What is the most appropriate SI unit to express the speed of a cyclist in a 10-km race? km/s cm/h km/h mm/s
A disturbance that moves through a solid, liquid, gas, or a vacuum is defined as __________.
energy, as long as matter is being transported
sound, as long as matter is not present within the disturbance
a wave, as long as matter is not being transported
a wave, as long as matter is being transported
Answer:
Wave
Explanation:
It is called wave.
when the disturbance moves through solid, liquid, gas and vacuum is called non mechanical wave.
The non mechanical wave do not require medium for travel. For example, light waves. they can travel through vacuum also.
Which type of heat source is the cleanest?
A.open fireplace
B.wood stove
C.hot water radiant heat
Answer:
option (C)
Explanation:
The source which gives the energy in form of heat is called heat source.
There are several sources which gives us heat. For example, sun, burning candle, burning coal, heater, wooden stove, etc.
Here, the cleanest source of heat energy is hot water.
What energy transformation occurs when a skydiver first jumps from a plane?
Gravitational potential energy transforms into kinetic energy.
Gravitational potential energy transforms into thermal energy.
Kinetic energy transforms into gravitational potential energy.
Thermal energy transforms into gravitational potential energy.
Answer:
Gravitational potential energy transforms into kinetic energy.
Explanation:
It is given that, we have to write energy transformation occurs when a skydiver first jumps from a plane.
Just before jumping from the plane, the skydive exhibit only gravitational potential energy because it is possessed due to height of an object. It can be given by :
PE = m g h
m is the mass of object
g is acceleration due to gravity
h is the height form the surface
As he reaches down, its potential energy decreases continuously and it is converting to kinetic energy. It can be given by :
KE = 0.5 mv²
V is the velocity of object
So, it is clear that the gravitational potential energy si transforms to kinetic energy.
The energy transformation that occurs when a skydiver jumps from a plane is the transformation of gravitational potential energy into kinetic energy. The altitude at which the jump happens directly influences the amount of potential energy available for transformation.
Explanation:When a skydiver first jumps from a plane, the energy transformation that occurs is the conversion of gravitational potential energy into kinetic energy. As the skydiver is at a height, he/she has gravitational potential energy. Once the skydiver jumps out of the plane and begins to fall, this potential energy is transformed into kinetic energy, which is the energy of motion. The higher the altitude from which the skydiver jumps, the larger the amount of potential energy that can be transformed into kinetic energy.
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How is it possible you can feel heat from the sun?
there are three ways by which we can transfer heat from one place to other
1. Conduction
In this method of heat transfer heat can be transferred from one place to other without actual movement of medium molecules. This is possible in solid conducting mediums
2. Convection
Here heat energy is carried away along with the medium molecules where medium molecules can move from one place to other while heat is transferred. It is possible in liquid and gas but not possible in solids
3. Radiation
In this mode of heat transfer we do not require any medium and here heat transferred by electromagnetic waves
So we can feel heat from sun in form of electromagnetic waves and it is the fastest way to transfer the heat also it do not require any medium
Which of the following measurements is used to measure the distance between astronomical bodies?
Speed of light
Speed of sound
Speed of spacecraft
Speed of rotation of Earth
Generally we use speed of light to measure the distance between two astronomical bodies
Because astronomical bodies are very far from each other
and we use light year as the unit of distance for large distances
1 light year is the distance covered by light in one year
so speed of light is correct option here
Two identical parallel plate capacitors A and B connected to a battery of V volts w/ the switch S closed. The switch is now opened and the free space between the plates of the capacitors is filled w/ a dielectric of dielectric constant K. Find the ratio of the total electrostatic energy stored in both capacitors before and after the introduction of the dielectric.
How long would it take for a ball dropped from the top of a 576-foot building to hit the ground? round your answer to two decimal places?
Instruments that produce sound from a vibrating string (suspended between two nodes) are called:
The instruments that produce sound from a vibrating string suspended between two nodes are called chordophones.
What is a chordophone?A chordophone is a musical instrument that produces sound from the vibration of a stretched string. The string is typically made of metal, nylon, or gut, and it is attached to two fixed points. When the string is plucked, bowed, or struck, it vibrates and produces sound waves.
Some of the most common chordophones include: Violin, Guitar, Harp, Lute. Chordophones are a diverse group of instruments, and they come in a variety of shapes and sizes. They are played in a variety of musical genres, and they are enjoyed by people all over the world.
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A plane, diving with constant speed at an angle of 40.9° with the vertical, releases a projectile at an altitude of 654 m. the projectile hits the ground 6.70 s after release. (a) what is the speed of the plane? (b) how far does the projectile travel horizontally during its flight? what were the magnitudes of the (c) horizontal and (d) vertical components of its velocity just before striking the ground? (state your answers to (c) and (d) as positive numbers.)
Two devices with capacitances of 25 μf and 5.0 μf are each charged with separate 120 v power supplies. calculate the total energy stored in the two capacitors. your answer submit
Answer:
Total energy stored in both is 0.0018J
Explanation:
Formula to calculate the total energy stored between two capacitors = 1/2CV²
Energy stored the First Capacitor = 1/2 × 25× 10⁻⁶f × (120)²
Energy stored = 0.0015J
Energy stored in the second Capacitor = 1/2 × 5× 10⁻⁶f × (120)²
Energy stored = 0.0003J
Total Energy stored = Energy stored in capacitance 1 + Energy stored in Capacitor 2
= 0.0015J+ 0.0003J
= 0.0018J
For Jane to see an image, light must enter her eyes. what specifically is entering her eyes when she sees an image?
A) Matter
B) Energy
C) Color
How can climate and temperature influence an individual’s behavior?
a.
Climate and temperature can affect an individual’s social interactions.
b.
Climate and temperature can affect an individual’s attitude toward survival.
c.
Climate and temperature affect all aspects of an individual’s behavior.
d.
Climate and temperature have no effect on an individual’s behavior.
The answer is B
Answer:
The correct answer would be b. Climate and temperature can affect an individual’s attitude toward survival.
Climate and temperature play an important role in the survival of an organism. Every organism or species requires optimum physical and chemical conditions such as temperature, pressure, pH et cetera.
Very high or very low temperature can cause death of an organism. For example, global warming has raised the temperature and salinity of the oceans due to which many marine organisms have died.
Which energy transformation is represented in the diagram?
A nuclear to thermal and radiant
B nuclear to electrical and chemical
C Chemical to nuclear and radiant
D Chemical to electrical and nuclear
Answer:
A nuclear to thermal and radiant
Explanation:
Nuclear fission is the disintegration of the force that holds the nucleus of the atom together, creating two different but lighter nuclei.
In nuclear fission, it seeks to break the force of attraction or nuclear force that joins the protons and neutrons that form the nucleus of an atom. Neutrons without electric charge are used against the nucleus of the atom to produce enough excitation energy to deform the nucleus into two halves.
The nuclei obtained from nuclear fission are different and lighter than the initial nucleus. The excess energy that emerges from nuclear fission is what is known as nuclear energy.
Nuclear fission produces energy in the form of heat and other radiations releasing (ie thermal and radiation in general), in turn, other neutrons. Each generated neutron collides with the other nuclei created, producing a chain reaction.
Nuclear fission can be used for power generation through a nuclear reactor. A nuclear reactor is a facility that generates self-sustained and controlled nuclear reactions, and uses the energy released from the fission of atoms.
For example, one of the first applications of nuclear fissions used uranium atoms to produce electricity.