How much work, , must be done on a system to decrease its volume from 17.0 l to 9.0 l by exerting a constant pressure of 4.0 atm? =

The emotion that occurs more often to more drivers is frustration.

What is frustration? Frustration is a feeling of dissatisfaction, displeasure, and discontent that arises as a result of an inability to fulfill a need or a goal. In driving, frustration is a common emotional state that occurs when a person is prevented from driving at their preferred pace, or when a person experiences unexpected events while driving, such as traffic jams or sudden accidents. Frustration may be caused by a variety of factors, including:

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A fuel-filled rocket is at rest. It burns its fuel and expels hot gas. The gas has a momentum of 1,500 kg m/s backward. So, The momentum of the rocket is -1500 kg m/s.

According to the law of conservation of momentum, in a closed system, the total momentum before and after a process remains constant.

A fuel-filled rocket that is initially at rest expels hot gas as it burns its fuel. The gas has a momentum of 1500 kg m/s backward.

We are required to determine the momentum of the rocket.

Consider the fuel-filled rocket as a system.

We have: Momentum before the burn = 0 kg m/s (since the rocket was at rest initially)Momentum after the burn = momentum of the expelled gas

We can therefore say that the initial momentum of the system was zero (0), and after the burn, the total momentum of the system remains the same as the momentum of the expelled gas.

Therefore: Momentum of rocket = - momentum of expelled gas

The negative sign signifies that the rocket's momentum is in the opposite direction of the expelled gas.

Hence, the momentum of the rocket is -1500 kg m/s.

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Hi there!

We can use the kinematic equation:

vf = vi + at

vf = final velocity (m/s)

vi  = initial velocity (m/s)

a = acceleration (m/s²)

t = time (sec)

Rearrange to solve for acceleration:

(vf - vi)/t = a

(30 - 25)/10 = 5/10 = 0.5 m/s²

Answer:

Explanation: vf-vi/t = a

a=30m/s -25 m/s/10 s

a =5m/s /10s

a =1/2 m/s²

Answer:

Eccentricity is found by the distance from a focus to the center of an ellipse along the semi-major axis divided by the semi-major axis length.

Remember that the sun is always a focus point to a planet orbiting around the sun.

11)  The semi-major axis length is (180+220)/2 = 200

      220-200= 20 <= distance from focus to the center of the ellipse along the semi-major axis length

        e= 20/200 = 0.1

Here's the answer for the next question too :)

12)  (147.2+152.1)/2= 149.65

       152.1-149.65= 2.45

        e= 2.45/149.65 = 0.0164

Explanation:

yahoo answered these questions 8 years ago O.o

The eccentricity of the orbit of a planet whose distance from the sun varies from 180 million to 220 million km is 0.1.

A conic section's eccentricity is a non-negative real integer that defines its form. More precisely, two conic sections are comparable if and only if their eccentricities are the same. The eccentricity may be thought of as a measure of how much a conic section deviates from being circular.

Eccentricity is calculated by dividing the distance from a focus to the center of an ellipse along the semi-major axis by the length of the semi-major axis.

Since the sun is always the focal point for planets orbiting around the sun. Therefore, we can write,

The semi-major axis length = (180 +220) / 2

                                             = 200

Now, the length of the semi-major axis from the focus to the center of the ellipse is,

Length = 220 - 200 = 20

Further, the eccentricity can be written as,

e= 20/200 = 0.1

Hence,  The eccentricity of the orbit of a planet whose distance from the sun varies from 180 million to 220 million km is 0.1.

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Answer:

The new pressure will be 12 atm

Answer:

The earth moves two ways. It spins and it moves around the sun. The spinning of the earth is called rotation. It takes the earth about 24 hours, or one day, to make one complete rotation.

Explanation:

The Earth's Three Motions. The Earth turns (rotation around the polar axis), goes along on its orbit (revolution around the Sun), swings smoothly as an unbalanced spinning top (equinoctial precession).

Because the Earth rotates on its axis, circulating air is deflected toward the right in the Northern Hemisphere and toward the left in the Southern Hemisphere. This deflection is called the Coriolis effect. Click the image for a larger view. Coastal currents are affected by local winds.

No, it is not acceptable for a food handler to rinse their hands in the sanitizing compartment.

Rinsing hands in the sanitizing compartment will contaminate the sanitizing solution and will be ineffective in eliminating bacteria and germs. Instead, food handlers should wash their hands properly in a designated handwashing sink with warm water and soap before rinsing them in the sink. They should then dry their hands with a clean and disposable towel.

Hand hygiene is one of the most critical aspects of preventing foodborne illness. It is important that food handlers wash their hands properly before handling food or performing any food preparation tasks. The use of hand sanitizer and sanitizing solution is also essential in ensuring food safety and hygiene. However, food handlers should never rinse their hands in the sanitizing compartment as this will contaminate the sanitizing solution and render it ineffective. This is because the solution is not designed for hand washing purposes and does not contain any soap or detergents to remove dirt and grime from the skin. Instead, food handlers should always use a designated handwashing sink with warm water and soap for hand washing purposes. They should wash their hands thoroughly, including under their fingernails, for at least 20 seconds before rinsing their hands in the sink. The water should be warm and comfortable, and the soap should be applied and lathered well before rinsing the hands. They should then dry their hands with a clean and disposable towel.

In conclusion, it is not acceptable for food handlers to rinse their hands in the sanitizing compartment. Food handlers should always wash their hands in a designated handwashing sink with warm water and soap before rinsing them. This will ensure proper hand hygiene and prevent contamination of the sanitizing solution. It is important that food handlers are trained on proper handwashing techniques to prevent foodborne illnesses and ensure food safety.

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The energy of the photon emitted when the harmonic oscillator drops from energy level 8 to energy level 3 is approximately 2.29 × 10^(-19) joules.

The energy of a photon emitted by a harmonic oscillator can be calculated using the formula E = hf, where E represents energy, h is Planck's constant (6.626 × 10^(-34) joule-seconds), and f is the frequency of the emitted photon. In the case of a harmonic oscillator, the frequency can be determined using the relation f = (1 / 2π) * √(k / m), where k is the stiffness of the oscillator and m is the mass.

By substituting the given values of the stiffness (31 N/m) and mass (6.5 × 10^(-26) kg) into the equation, we can calculate the frequency. Then, using the frequency and Planck's constant, we can determine the energy of the emitted photon.

Understanding the energy of emitted photons in harmonic oscillators provides insights into the quantized nature of energy levels and the relationship between energy and frequency in quantum systems.

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the source of noise that has been declining slightly in recent years is the automobile. This is due to the implementation of noise regulations and the development of more efficient and quieter engines.

Answer - 1. Technical evolution of motor vehicles and progress in reducing their noise.

2. Population and urbanisation trends.

3. Economic trends and trends in motor vehicle ownership.

4. Traffic trends, particularly in urban areas.

5. Changes in legislation.

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The angle θ which the left-hand cable makes with respect to the wall is  17⁰.

The resultant force on the cables is determined by resolving the forces into x and y components as shown below.

y-component of the weight;

Wy = -636 N

y-component of the tension in the right cable;

Ty = 890 x sin(26)

Ty = 390.15 N

x-component of the tension in the right cable;

Tx = 890 x cos(26)

Tx = 799.93 N

y-component of the tension in the left cable;

Ty = T sinθ

x-component of the tension in the left cable;

Tx = -T cosθ

Sum of the forces in y-direction;

∑F_y = 0

T sinθ - 636 + 390.15 = 0

T sinθ - 245.85 = 0

T sinθ = 245.85 -------- (1)

Sum of the forces in x-direction;

∑Fx = 0

-T cosθ + 799.93 = 0

T cosθ = 799.93  -------- (2)

Divide equation (1) by (2)

T sinθ / T cosθ = 245.85/799.93

tanθ = 0.307

θ = arc tan(0.307)

θ = 17.1⁰ ≈ 17⁰

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Two football players are running towards each other in a straight line (exact opposite directions). Player A is running at 3.3 m/s and has a mass of 105 kg. Player B is 126 kg.

The players collide and their net momentum after the collision is 0 Ns. How fast was Player B running before they collided? The law of conservation of momentum states that in a closed system, the total momentum remains constant. Therefore, the total momentum of both players before collision equals the total momentum of both players after collision. This means: mA * VA + mB * VB = (mA + mB) * V, where VA and VB are the initial velocities of A and B, respectively, and V is their final velocity after the collision (which is 0).

So, we can rearrange the above equation to solve for VB. VB = (mA * VA) / mB Here, mA = 105 kg and VA = 3.3 m/s, and mB = 126 kg. Substituting the values, we get: VB = (105 * 3.3) / 126= 2.75 m/s Therefore, Player B was running at 2.75 m/s before they collided.

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Independent variable - Time taken

Dependent variable - Temperature

In scientific experiments, a dependent variable is a variable that is being measured or observed, and whose value depends on the value of another variable, known as the independent variable.

The independent variable is a variable that is manipulated or controlled by the experimenter to see its effect on the dependent variable.

By manipulating the independent variable and observing its effect on the dependent variable, researchers can gain a better understanding of the relationship between variables and the underlying mechanisms that govern them.

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For each diagram net force and direction calculated.

Part - 1

1) Net force = 0

no direction

balanced

2) Net force = 87

direction →

unbalanced

3) Net force = 42

direction →

unbalanced

4)  Net force = 0

no direction

balanced

5) Net force = 24

direction →

unbalanced

6) Net force = 0

no direction

balanced

7) Net force = 92

direction ←

unbalanced

8)  Net force = 0

no direction

balanced

Part - 2

1)  Net force = 0

2)  Net force = 10N

3)  Net force = 12

4)  Net force = 0

5)  Net force = 39N.

Here g stands for gravitational force. Numerous additional forces, such as gravitational force Fg, frictional force Ff, and the normal force, act on the body when a force is applied to it. These additional forces serve to balance the applied force. FNet = Fa + Fg + Ff + FN is the result, and it represents the net force formula.

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Coulomb, a French physicist, conducted his experimental investigations of electrical forces in the 18th century.

He developed a torsion balance that allowed him to measure the force between two charged objects. Coulomb discovered that the force between two charged objects is proportional to the product of their charges and inversely proportional to the square of the distance between them.

This relationship is known as Coulomb's law and is still used to describe the behavior of charged particles today. Coulomb's work was crucial in establishing the field of electrostatics,

which studies the behavior of stationary charges. His experiments paved the way for the development of modern electrical engineering and technology.

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Decrease

The mathematical relationship between heat, internal energy and work done by the system is given as:

△U = Q + W

where △U is the change in the internal energy

W is the workdone by the system

Q is the heat energy in the system

Since the workdone by the system is negative, when a system does work, there is a depletion in the amount of energy possessed by the system.

Due to this loss of energy by the system as a result of the workdone, the internal energy decreases.

Answer:

the answer is c

Explanation:

Answer:

d

Explanation:

on edge

The sentence that shows the correct use of a transition word is I stayed up late for several nights. Eventually, I was too tired to concentrate. The correct option is D.

Transitional words include the words "and," "but," "so," and "because." They demonstrate to your reader the connections between words, and sentences.

Utilize these transitions wisely by making sure the word or phrase you choose adheres to the logic of the connection or relationship you are emphasizing.

Before utilizing a certain transitional word in your paper, make sure you fully understand its meaning and usage and that it is the correct match for the logic of your thesis. All of these words and phrases have various meanings, nuances, and connotations.

Therefore, the correct option is D, I stayed up late for several nights. Eventually, I was too tired to concentrate

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The situations that sonar be most practical is option A: Measuring the distance between objects in the ocean.

Sonar, short for sound navigation and ranging, is a technology that uses sound waves to determine the distance and location of objects in the ocean.

Therefore,  It works by emitting a sound wave and measuring the time it takes for the wave to bounce back, which allows the system to calculate the distance to the object. This technology is commonly used in navigation, search and rescue, and underwater mapping.

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Vectors need direction and magnitude to exist, otherwise, it becomes scalars that do not require direction to be expressed.

eg - Velocity is a vector as it needs direction, but speed is scalar and does not need direction

hope this helps

Answer:

a. All quantities in physics are not vectors. b. A vector may have either magnitude or direction. c. The vector's length should be proportional to its magnitude. d. Two vectors can be added only if they have the same direction.

Answer:

I think it's 250

Explanation:

If the car is traveling 50 km/hr that means every hour, the car drives 50 km. So if you want to know how far it will go in 5 hours you do 50x5.

Looking at the velocity graph on the right, the object changes direction at 1 sec.

If a line representing the position or displacement of an object on a graph crosses over the x-axis, from the positive region to the negative region (or vice versa), it indicates a change in direction of the object.

On a position or displacement graph, the x-axis typically represents time, and the y-axis represents the position or displacement of the object.

Thus, when the line representing the object's position or displacement crosses the x-axis, it means that the object has reached a point where its position or displacement changes from positive to negative (or vice versa).

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Friction is the force that is resisting the motion of an object so it will always point in the opposite direction of that of movement. ... The force of gravity points downwards . So when you do work against gravity it means that the force acting on that object points in the upward direction .

Explanation:

Answer:

a = 0.3 m/s²

Explanation:

Given: 45 N, 150 kg

To find: a

Formula: \(a = \frac{F}{m}\)

Solution: To find a, divide the force by the weight  

A = F ÷ m

=  45 ÷  150

= 0.3 m/s²

Newtons are derived units, equal to 1 kg-m/s². In other words, a single Newton is equal to the force needed to accelerate one kilogram one meter per second squared.

Answer:

natural is the answer

Friction is a natural force which exist

Explanation:

I hope it helped U

stay safe stay happy

Answer:

Explanation:

The prime purpose of radio is to convey information from one place to another through the intervening media (i.e., air, space, nonconducting materials) without wires. Besides being used for transmitting sound and television signals, radio is used for the transmission of data in coded form.

The environment was quite different. Based on the sediment in the rock sample (photograph X), it is likely that this area was once covered by a shallow sea or ocean. The presence of fine-grained sediment, such as silt and clay, suggests that the water was relatively calm and quiet.

About 290 million years ago, during the Paleozoic era, Kansas was covered by a shallow sea known as the Permian Sea. The sedimentary rocks found in Kansas, including limestone, sandstone, and shale, were deposited in this sea over millions of years.

The environment in which sediment is deposited can provide clues about the conditions of the area at the time. Based on the type of rock you mentioned, it is likely that the sediment was deposited in a marine environment, such as a shallow sea or a shoreline. The limestone could have been formed from the accumulation of shells and other organic material from marine organisms, while the sandstone and shale could have been deposited by erosion and transport of sediment from nearby land.

In terms of the landscape, it is possible that the area that is now Kansas was a low-lying coastal plain, with rivers and streams carrying sediment into the sea. The rolling hills and farm fields seen today are a result of more recent geologic processes, such as erosion and deposition by wind and water.

Overall, the sediment in the rock sample you mentioned was likely deposited in a marine environment in what is now Kansas, during the time period of the Permian Sea.

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The air space would be half the size it was at the surface.

It should be noted that airspace means the portion of the atmosphere controlled by a country that's above its territory.

Based on the information given, the The air space would be half the size it was at the surface.

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Answer: The answer is B: Convection  

Explanation: Convection transfers heat through a movement of fluids but in this case its through air hope this helps :)

Kinematics

First Velocity (Vf) = 18 m/s

Last Velocity (Vl) = 19 m/s

time (t) = 5 seconds

acceleration = ______?

Answer :

Vl = Vf + a × t

19 = 18 + a × 5

19 - 18 = 5a

1 = 5a

1 / 5 = a

0,2 m/s² = a ✅

Answer: 0.2 m/s^2 east

Explanation:

A PE X