If the particles formed through fission have less mass than the starting material, has the law of conservation of energy been broken?

\(\\ \bull\tt\dashrightarrow Work\:Done=Force\times Displacement\)

\(\\ \bull\tt\dashrightarrow Work\:Done=10(10)\)

\(\\ \bull\tt\dashrightarrow Work\:Done=100J\)

Answer:

100J

Explanation:

W=F×d

=10N×10m

=100J

Answer:

0.375 N

Explanation:

1250 * 3 mm^2 =0.375 N

Answer:

C would be the correct answer

Answer:

It has to have a whistle device on the spout. When boiling occurs, water vapour displaces air above the water which has to escape through the whistle hence activating the required vibrations. Thereafter, the continuing supply of steam does the same job until the cook involves turns off the heat. The whistle is not made to exacting scientific standards and there is no doubt a range of pressures above which it will work it. It would be interesting to know how you observed the water boiling without using a transparent kettle.

Explanation:

hope it helps

Answer:

63.8454kgm/s

Explanation:

According to Newton's second law;

Force = mass ×acceleration

Fore = m(v-u)/t

Force = mv-mu/t

MV is the final momentum

mu is the initial momentum = 38kgm/s

Force = 88.3N

Time = 0.338s

Substitute and get mv

88.3 = mv-38/0.338

88.3×0.338 = mv-38

29.8454 = mv-38

MV = 29.8454+34

mv = 63.8454kgm/s

Hence the final momentum is 63.8454kgm/s

Answer:

67.8

Explanation:

im an acellus student, and this is the answer that i got when doing the problem.

The most likely cause of the shift of emission spectra to longer wavelengths compared to the excitation spectra is a phenomenon called Stokes shift. The Stokes shift occurs when the emitted photons have lower energy (longer wavelength) than the absorbed photons.

In the case of the bound states of y32, the shift to longer wavelengths in the emission spectra suggests that energy is being lost or dissipated during the relaxation process from the excited state to the ground state. This energy loss can be attributed to various factors such as vibrational relaxation, rotational relaxation, collisional interactions, or energy transfer to the surrounding environment. These processes result in a decrease in the emitted photon energy, leading to a redshift or shift to longer wavelengths in the emission spectra compared to the excitation spectra.

It is important to note that without specific details or experimental data, it is difficult to pinpoint the exact cause of the shift in this specific scenario. However, the Stokes shift is a commonly observed phenomenon in spectroscopy and can be a probable explanation for the longer wavelength shift in the emission spectra.

Spectroscopy is a scientific discipline that specifically examines matter and its attributes in terms of light emission, sound absorption or the reflection of particles produced by the material. Spectroscopy can also be defined as the science that studies the interaction between light and matter.

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The required acceleration of the football player is calculated to be -2.067 m/s².

Velocity of the football player is given as 3 m/s.

After 4 s, the velocity is given as -5 m/s.

Velocity is nothing but the displacement covered in unit time. It is a vector. Its units are m/s.

Acceleration is the same as the rate of change of motion. Its units are m/s².

The change in velocity is,

⇒ -5 - (3) = -8 m/s

Acceleration a = Change in velocity upon time = -8/3 = -2.067 m/s²

Thus, the required acceleration of the football player is calculated to be -2.067 m/s².  

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Liam possesses both a comparative advantage and an absolute advantage in mirror production for all values of "y".

When Liam has both a comparative advantage and an absolute advantage in mirror production, it means that he can produce mirrors more efficiently and at a lower opportunity cost compared to other individuals or countries. In this case, it is stated that Liam possesses these advantages for all values of "y", indicating that regardless of the specific circumstances or conditions, Liam is consistently more efficient and productive in mirror production.

The statement suggests that Liam has a significant advantage in mirror production, both in terms of absolute advantage and comparative advantage, regardless of any specific value of "y". This implies that Liam's skills, resources, or production capabilities are superior to others in the context of mirror production, allowing him to produce mirrors more efficiently and effectively.

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Answer:By turning the electrical current off

Explanation:Trust me I took the test

Answer:

d) By turning the electrical current off

Explanation:

this is the only one that fits this situation because all of the other answers help improve the magnetic field.

When you look through the lens towards the mirror, you will see the image of the matchstick at the same position as the object, but on the opposite side of the lens.

When light from the matchstick passes through the lens, it converges to form an image. However, when this light reaches the mirror, it reflects back and retraces its path through the lens. The lens then diverges the light, making it appear as if it is coming from an image formed at the same position as the object but on the opposite side of the lens.

The image of the matchstick appears at an equal distance from the lens as the matchstick itself, but on the opposite side, due to the light reflection and lens properties.

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The pressure transmitted in the hydraulic fluid is 4000 Pa and the mass of the load is 40.82 kg.

To determine the pressure transmitted in the hydraulic fluid, we can use the formula:

Pressure = Force / Area

Given that a force of 20 N is applied to the small piston and the cross-sectional area of the small piston is 0.005 m², we can calculate the pressure as follows:

Pressure = 20 N / 0.005 m²

Pressure = 4000 Pa

Therefore, the pressure transmitted in the hydraulic fluid is 4000 Pa.

To determine the mass of the load, we need to consider the equilibrium of forces in the hydraulic system. The force applied to the small piston is transmitted to the larger piston. Since the system is in equilibrium, the force exerted by the larger piston must balance the force applied to the small piston.

Using the formula:

Force = Pressure × Area

The force exerted by the larger piston can be calculated as follows:

Force = Pressure × Area (large piston)

Force = 4000 Pa × 0.1 m²

Force = 400 N

Therefore, the force exerted by the larger piston is 400 N.

Since force is equal to mass multiplied by acceleration (F = m × a), and the acceleration due to gravity is approximately 9.8 m/s², we can calculate the mass of the load:

400 N = mass × 9.8 m/s²

Solving for the mass:

mass = 400 N / 9.8 m/s²

mass ≈ 40.82 kg

Therefore, the mass of the load is approximately 40.82 kg.

The question was incomplete. find the full content below:

The diagram shows a basic hydraulic system which has a small piston and a large piston with cross-sectional areas of 0.005m² and 0.1m² respectively. A force of 20 N is applied to the small piston. Determine (a) the pressure transmitted in the hydraulic fluid (b) the mass of the load​

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The force between the Moon and the Earth is calculated using the formula \(F = G(m_1*m_2)/r^2\), where F is the force between the two objects, G is the universal gravitational constant, \(m_1\) and \(m_2\) are the masses of the two objects, and r is the distance between the two objects. Therefore, if the mass of the Moon is somehow made two times greater than its actual mass, the force between the Moon and the Earth would also increase.

To calculate the exact increase in force, we can use the same formula and compare the force before and after the increase in mass. Let's assume that the mass of the Moon is m before the increase and 2m after the increase. We can then use the formula to calculate the force before and after the increase, as follows:
- Before: \(F_1 = G\frac{mM}{r^2}\)
- After: \(F_2 = G\frac{2mM}{r^2}\)

To compare the two forces, we can divide \(F_2\) by \(F_1\):
\(\frac{F_2}{F_1} = [G\frac{2mM}{r^2} ]/[G\frac{mM}{r^2} ]\)
\(\frac{F_2}{F_1} =2\)

Therefore, the force between the Moon and the Earth would become two times greater if the mass of the Moon were somehow made two times greater than its actual mass. This is because the force of gravity is directly proportional to the masses of the objects involved.

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Answer:7.904*10^-4

Explanation:

Trust me

A missile has a guidance device which is sensitive to both temperature, t C, and humidity, h. The range in km over which the missile can be controlled is given by Range R = 27800-5t2-6ht-3h2 + 400t + 300h. the optimal temperature is 43.75°C and optimal humidity is 6.25

Range R = 27800 - 5t² - 6ht - 3h² + 400t + 300h

Where, R is the range over which the missile can be controlled. t and h are the temperature and humidity respectively.

The optimal atmospheric conditions for controlling the missile.

We need to find the optimal value of t and h that will maximize the range of missile, i.e., the optimal value of R.

To find optimal values, we need to find the partial derivative of R w.r.t both t and h and equate them to zero.

Partial derivative of R w.r.t t: ∂R/∂t= -10t -6h + 400

Partial derivative of R w.r.t h: ∂R/∂h= -6t - 6h + 300

Now, equate both to zero to get the optimal values of t and h:

∂R/∂t= 0 => -10t - 6h + 400 = 0=> 10t + 6h = 400 -----(1)

∂R/∂h= 0 => -6t - 6h + 300 = 0=> t + h = 50 ----- (2)

Multiplying equation (2) by 6 and adding it to equation (1), we get:

10t + 6h = 400...........(1)

6t + 6h = 300...........(2)

-----------------------16t = 700=> t = 43.75

Using equation (2), h = 50 - t= 50 - 43.75= 6.25

Thus, the optimal temperature is 43.75°C and optimal humidity is 6.25, i.e., the optimal atmospheric conditions for controlling the missile is 43.75°C temperature and 6.25% humidity.

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When going from low to high power lenses, both the field of view and the amount of available light undergo changes.

The field of view refers to the area visible through the lens. In general, as the power of the lens increases, the field of view decreases. High power lenses have a narrower field of view compared to low power lenses. This means that when looking through a high power lens, you can see a smaller portion of the scene or specimen compared to a low power lens. The reduced field of view allows for more magnification and finer details to be observed.The amount of available light also changes with the power of the lens. High power lenses tend to have smaller apertures or openings through which light can pass. This results in less light reaching the observer's eye or the detector. As a result, the image may appear darker when using a high power lens compared to a low power lens.It's important to note that these changes in field of view and available light are general observations and can vary depending on the specific characteristics and design of the lenses being used.

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The bird has the most potential energy when it is at the highest point of its dive into the ocean.

1. Potential energy is the energy possessed by an object due to its position or state.

2. In this case, we are considering the potential energy of a bird diving into the ocean.

3. The potential energy of an object depends on its height and mass.

4. When the bird is at the highest point of its dive, it has the maximum potential energy.

5. As the bird dives deeper into the ocean, its height decreases, resulting in a decrease in potential energy.

6. At the moment the bird reaches the surface of the water, its potential energy is at its minimum, as it is at its lowest height.

7. The potential energy is converted into kinetic energy as the bird accelerates towards the water.

8. Kinetic energy is the energy possessed by an object due to its motion.

9. When the bird enters the water, its potential energy is completely converted into kinetic energy.

10. The bird continues to possess kinetic energy as it moves through the water.

11. Once the bird comes to a stop in the water, its kinetic energy is reduced to zero.

12. At this point, the bird's potential energy is also zero, as it is at its lowest height and not in motion.

13. Therefore, the bird has the most potential energy when it is at the highest point of its dive into the ocean.

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Answer:

First, as you may know, the light travels at a given velocity.

In vaccum, this velocity is c = 3x10^8 m/s.

And we know that:

distance = velocity*time

Now, if some object (like a star ) is really far away, the light that comes from that star may take years to reach the Earth.

This means that the images that the astronomers see today, actually happened years and years ago (So the night sky is like a picture of the "past" of the universe)

Also, for example, if an astronomer sees some particular thing, he can apply a model (a "simplification" of some phenomena that is used to simplify it an explain it) and with the model, the scientist can infer the information of the given thing some time before it was seen.

The astronomers could know what was happening inside galaxies way back then by the fact that;

they examine the spectra of galaxies (or the overall colors of galaxies) with the highest redshifts they can find

Astronomers Measure the wavelength of the light that is stretched, so the light is seen as 'shifted' towards the red part of the spectrum by using spectroscopy. This measure is also called redshift.

This invokes a ray of light through a triangular prism that splits the light into various components known as spectrum.

The way the astronomers could use this concept to know what was happening in the galaxies before is by examining the spectra of galaxies that have the highest redshifts.

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The oscillation frequency if all capacitors are increased by 10% and resistors decreased by 5% is f' = 1 / (2 * π * √(9.5 kΩ * 1.1 nF))

a) To design a phase-shift oscillator with voltage followers and an oscillation frequency of 10 kHz, we can use the following circuit components and sketch the circuit:

Operational amplifiers (op-amps): Use three op-amps, such as the commonly used 741 op-amp.

Resistors: Set the resistors in the feedback circuit to R = 10 kΩ. The resistors connected to the non-inverting terminals of the op-amps can have different values depending on the desired phase shift. Let's assume R1 = R2 = R3 = 10 kΩ.

Capacitors: The capacitors in the feedback circuit determine the phase shift. For a phase shift oscillator, we need a total of three capacitors. Let's assume C1 = C2 = C3 = 1 nF.

The circuit schematic for the phase-shift oscillator with voltage followers is as follows:

       |

       R1

       |

       +--------+---------+--------+------ Vo1

       |        |         |        |

      C1       R2        C2       R3

       |        |         |        |

  Vin --|        |         |        |-------- Vo2

       |        |         |        |

       +--------+---------+--------+

                 |

                C3

                 |

                GND

Note: The voltage followers are represented by the op-amps configured in the non-inverting amplifier configuration.

b) If all capacitors are increased by 10% and resistors are decreased by 5%, the new values for the circuit components would be:

Resistors: R' = 10 kΩ - 5% = 9.5 kΩ (rounded)

Capacitors: C' = 1 nF + 10% = 1.1 nF (rounded)

To calculate the new oscillation frequency, we can use the formula:

f' = 1 / (2 * π * √(R' * C'))

Substituting the new values, we have:

f' = 1 / (2 * π * √(9.5 kΩ * 1.1 nF))

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Option C is correct. The center of gravity of a homogeneous body is the point at which the weight of the body can be assumed to be concentrated.

The focal point of gravity of a homogeneous body is the place where the whole weight of the body can be thought to be concentrated. A homogeneous body is one in which the thickness is uniform all through its volume.

The focal point of gravity is the place where the body will adjust when suspended starting there. It is additionally the place where the gravitational power following up on the body can be considered to act.

On account of a strong body, the focal point of gravity is commonly situated at the mathematical focus of the body. For unpredictably molded bodies, the focal point of gravity can be resolved utilizing numerical estimations that consider the conveyance of mass all through the body. The focal point of gravity is a significant idea in material science and is utilized in numerous applications, including the plan of designs and vehicles.

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Answer: 1.25 m/s²

Explanation:

The force acting on the block, F = 40 N

The acceleration of the block, a = 2.5 m/s²

The mass of the first block, m1 = unknown

The mass of the second block, m2 = 4.0 kg

From the equation F = ma, we know that the force is equal to the product of mass and acceleration.

For the first block:

F = m1a

40 N = m1 x 2.5 m/s²

m1 = 16 kg

Now we can find the total mass of the system:

m_total = m1 + m2

m_total = 16 kg + 4 kg

m_total = 20 kg

The force continues to act on the combined blocks with a total mass of 20 kg, so we can use the equation F = ma again to find the acceleration of the combined blocks:

F = m_total x a

40 N = 20 kg x a

a = 40 N / 20 kg

a = 2 m/s²

Therefore, the magnitude of the acceleration of the combination of blocks is 1.25 m/s².

The force acting on the block, F= 40 N

The mass of the first block, m1= x

The mass of the second block,m2= 4kg

From the equation F= ma, we know that the force= m*a

The acceleration speed of the block a= 2.5m/s

For the first block:

F= M*A

40 N= m1*2.5m/s

m1= 16 kg

Now we can easily find the total mass of the body:

m_total= m1+m2

m_total= 16+4

m_total= 20kg

The force continues to act on the combined blocks with a total mass of 20kg. Hence, we can use F= M*A to find the acceleration of combined blocks:

40 N= 20 kg * a

a= 40 N/20 kg

a= 2m/s

Hence, the combined magnitude of the acceleration of blocks will be 1.25m/s.

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Answer:

option 4

Explanation:

Light's velocity in air ( 3 × 10^8 m/s ) is much greater than sound's velocity in air ( 343 m/s )

Hence due to difference in velocities , during lightning light is seen first & sound is heard later

In relation to line locators, conductive refers to a direct connection between the pipe and transmitter. Conductive locating involves connecting a transmitter to a metallic pipe or cable and then using a receiver to detect the signal transmitted through the pipe or cable.

The transmitter sends an electrical signal through the conductive material, which is then picked up by the receiver. This technique is particularly useful when locating pipes or cables that are buried underground or hidden behind walls. By using conductive locating, line locators can accurately determine the location, depth, and direction of the pipe or cable. In contrast, an indirect connection with radio waves, as in option B, is referred to as inductive locating, which involves detecting the electromagnetic field around the pipe or cable. While inductive locating can be useful in some situations, such as locating non-conductive pipes or cables, it is less accurate than conductive locating. Overall, conductive locating is a key technique used by line locators to accurately and efficiently locate buried or hidden pipes and cables.

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Answer:

The applied force on the vehicle is 5,000 N

Explanation:

From the question, we have the following parameters of the motion of the vehicle;

The form of the velocity with which the vehicle is travelling = Uniform velocity

The direction of motion of the vehicle = Along a straight and level stretch of the highway

The combined force which acts as resistance to the vehicle's motion = 5,000 N from rolling friction and resistance of the air opposite to the direction of motion

A vehicle travelling with uniform velocity has zero acceleration, therefore;

The acceleration of the vehicle, a = 0 m/s²

According to Newton's Second Law of Motion, we have;

Force, F = Mass, m × Acceleration, a

∴ The net force of acting on the vehicle, F = m × a

Where;

m = The mass of the vehicle

a = The acceleration of the vehicle = 0 m/s²

∴ F = m × 0 = 0

The net force on the vehicle = 0, therefore;

The applied force + The force of rolling friction and air resistance = 0

We therefore have;

The applied force + 5,000 N = 0

∴ The applied force = 0 - 5,000 N = -5,000 N

The applied force, F = 5,000 N in the direction of motion.

Answer: happy Ramadan

Explanation: thanks

The value of the resistance r is 20.25 ohms.

The value of the resistance r is calculated by applying Ohm's law as shown below.

Ohm's law states that the current flowing in a circuit is directly proportional to the voltage across the circuit.

V = IR

where;

P = IV

I = P / V

I = ( 32 W ) / ( 24 V + 12 V )

I = 0.889 A

R = V/I

R = ( 24 + 12 ) / ( 0.889 A )

R = 40.5 ohms

The value of each resistance, r is calculated as;

r = 40.5 ohms / 2

r = 20.25 ohms.

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The image formed by a plane mirror is located at the same distance behind the mirror as the object is in front of it.

According to the laws of reflection, a plane mirror forms a virtual image that is located behind the mirror. The key property of a plane mirror is that it creates an image that is a "mirror image" of the object, meaning the image appears to be located on the opposite side of the mirror.

When an object is placed in front of a plane mirror, the image formed appears to be located at the same distance behind the mirror as the object is in front of it. This is true regardless of the actual distance between the mirror and the object.

The distance between the object and the mirror is referred to as the object distance, and the distance between the image and the mirror is referred to as the image distance.

Therefore, the image formed by a plane mirror is located at the same distance behind the mirror as the object is in front of it.

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The wavelength of a wave with a frequency of 500 Hz that is traveling at a speed of 200 meters per second is 0.4 meters (m).

A wave is a disturbance that travels through space and matter, transferring energy from one location to another without actually moving any matter. Light waves, sound waves, and water waves are some examples of waves. Waves can be characterized by their amplitude, frequency, and wavelength. Wavelength is the distance between two corresponding points on a wave, such as two peaks or two troughs. It is represented by the symbol λ (lambda) and is measured in meters.

The wavelength of a wave can be calculated using the formula:

λ = v/f Where λ is the wavelength, v is the speed of the wave, and f is the frequency of the wave. Given that a wave with a frequency of 500 Hz is traveling at a speed of 200 meters per second, the wavelength can be calculated as follows:

λ = v/fλ

  = 200/500λ

  = 0.4 m

Therefore, the wavelength of the wave is 0.4 meters (m).

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The difference in rotational displacement caused by two forces of 30 N with the same lever arm can be attributed to the varying moments of inertia of the object.

The rotational displacement of an object depends on the applied force and the object's moment of inertia. The moment of inertia represents the object's resistance to rotational motion and depends on its mass distribution. In the given scenario, the force of 30 N causes the object to rotate pi radians, while another force of 30 N with the same lever arm causes a rotation of (2/3) pi radians. This difference in rotation can be explained by the fact that the moments of inertia of the object are different in the two cases. The object's moment of inertia influences how it responds to rotational forces, and objects with different mass distributions can have different moments of inertia. Therefore, even with the same applied force and lever arm, the resulting rotational displacement can vary based on the object's moment of inertia.

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If the two cigarette companies, PM Inc. and Brown Inc., behave as individual profit maximizers, they will analyze the different scenarios and choose the option that maximizes their own profits. Let's consider the possible strategies and outcomes:

1. Neither company advertises:

  - Profit for each company: $60 million

2. Both companies advertise:

  - Profit for each company: $60 million - $20 million (cost of advertising) = $40 million

3. One company advertises while the other does not:

  - If PM Inc. advertises and Brown Inc. does not:

    - Profit for PM Inc.: $70 million

    - Profit for Brown Inc.: $30 million

  - If Brown Inc. advertises and PM Inc. does not:

    - Profit for Brown Inc.: $70 million

    - Profit for PM Inc.: $30 million

Considering these outcomes, both companies would analyze the situation and aim to maximize their profits. As individual profit maximizers, they would recognize that advertising has the potential to attract customers from competitors and increase their own profits.

If PM Inc. believes that Brown Inc. will not advertise, PM Inc. would choose to advertise and earn $70 million, while Brown Inc. would earn $30 million. On the other hand, if Brown Inc. believes that PM Inc. will not advertise, Brown Inc. would choose to advertise and earn $70 million, while PM Inc. would earn $30 million. Therefore, if both companies behave as individual profit maximizers and make their decisions independently, they would both choose to advertise, resulting in profits of $40 million each.

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