Oil with kinematic viscosity of 0.004 ft2/sec weighs 62 lb/ft3.What will be its flow rate and head loss in a 2750 ft length of a 3-inch diameter pipe when the Reynolds number is 950

Answer:

10m/s

Explanation:

2m/s  x  5s=10m/s

If the car travels a distance greater than 10 km in one hour or less than one hour, it has exceeded the speed limit.

The given parameter:

speed limit =  10 km/hour

To find:

Speed is defined as the total distance traveled divided by the total time taken for the journey.

\(speed = \frac{distance}{time}\)

If the car travels any distance greater than 10 km in 1 hour or less than 1 hour, it has exceeded the speed limit of 10 km/hr.

For example, let's say the distance traveled by the car in one hour is 11 km. The speed of the car is 11 km/hr which is greater than the speed limit.

Thus, we can conclude that if the car travels a distance greater than 10 km in one hour or less than one hour, it has exceeded the speed limit.

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Light acceleration is used to maintain slow forward motion or allow speed to increase gradually with minimum weight shift.

This is referred to the rate of change of velocity with time and  is regarded as a vector quantity.

It is also characterized by a positive forward motion and light acceleration on the other hand maintains slow forward motion or allow speed to increase gradually with minimum weight shift.

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If the electric field moves the charge from A to B by doing 0.052 J of work, we must determine the potential difference between a and B. That much is clear. The voltage differential is 9122.8 volts as a result.

Moving a +5.7-C charge between A and B causes the electric field to exert 0.052 J of work. When a charge q is transported from point A to point B, the potential difference between the two points is defined as the change in potential energy of the charge divided by the charge, or V = VB - VA. Voltage, also known as potential difference, is frequently abbreviated to V.

The SI unit for electric potential is volt (V). Potential difference is calculated using the method V = W/Q. Joules and Coulombs are the equivalent SI units for work and positive charge, respectively. Consequently, the formula can be written as VB-VA = WA B/Q.

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Answer:

KE = incident energy - work function

The maximum KE will be (3 - .6) eV = 2.4 eV

The diffraction maximum becomes sharper and much more intense with additional slits, in addition to being much more intense overall.

More secondary maxima occur as the number of slits rises, but the major maxima get brighter and narrower.

Because it depends on L, the spacings between various fringes get smaller as the slit distance gets bigger. Since the space between various fringes is wavelength dependant, increasing the light's wavelength also increases that separation.

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Refer to the attachment

These mixtures are carefully formulated to reduce the risk of oxygen toxicity and allow for safe and efficient diving at greater depths. False.

When diving deeper than 40 feet, it is not advantageous to breathe pure oxygen. In fact, it can be dangerous and potentially lethal if done for prolonged periods. Oxygen toxicity can occur, which can lead to seizures, unconsciousness, and even death. Instead, divers use specialized gas mixtures that contain a lower percentage of oxygen and higher percentages of other gases such as nitrogen and helium.  

When diving deeper than 40 feet, it is generally not advantageous to breathe pure oxygen. Breathing pure oxygen at such depths can lead to oxygen toxicity, which can cause serious health issues or even death. Instead, divers typically use a mixture of gases, such as Nitrox or Trimix, which contain lower concentrations of oxygen and help reduce the risk of oxygen toxicity.

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In case, when two cylindrical wires of different diameters are connected in series, an emf (electromotive force) is applied across the ends.

a. The side with the smaller diameter cylindrical wire on the left will have a larger current magnitude. This is because the current density, which is defined as the current per unit cross-sectional area of the wire, is inversely proportional to the cross-sectional area of the wire. Since the left side has a smaller cross-sectional area, it will have a larger current density and therefore a larger current magnitude.

b. The potential difference magnitude is the same on both sides. This is because the potential difference between two points is determined by the emf of the battery and is independent of the wire's properties. Therefore, the potential difference between points A and B is the same on both sides of the wire.

c. The side with the smaller diameter cylindrical wire on the left will have a larger drift velocity magnitude. This is because the drift velocity of electrons in a wire is proportional to the current density, which as stated above, is inversely proportional to the cross-sectional area of the wire. Since the left side has a smaller cross-sectional area, it will have a larger current density and therefore a larger drift velocity magnitude.

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Answer:

Nuclear fusion is difficult to achieve because at low temperatures and pressures  the positively charged nuclei of deuterium and tritium electrostatically  each other is explained below in complete details.

Explanation:

For nuclear fusion to happen, very eminent temperatures are needed to succeed the opposing force between the positively energized nuclei of a specific isotope.  Fusion doesn't release dangerous toxins like co2 or other greenhouse gases into the environment. Its significant by-product is helium: an inactive, non-toxic gas. No long-lasting radioactive ruin: Nuclear fusion reactors generate no high action, long-lived nuclear ruin.

Answer:

repel

Explanation:

its called electrostatic repulsion

Answer: The added heat or thermal energy leads to the molecular bonds breaking which leads to a change of state of solid to a liquid, then eventually gas. Solids melt when they absorb enough thermal energy.

Block of ice sliding down an incline has half its maximum kinetic energy at the bottom. The maximum kinetic energy of the block of ice will be reached at the bottom of the incline, where it has the highest velocity. Correct answer is option B

This is because the block of ice will experience a gain in kinetic energy as it slides down the incline due to the force of gravity.  According to the law of conservation of energy, the total energy of a system remains constant.

In this case, the potential energy of the block of ice at the top of the incline is converted into kinetic energy as it slides down. At any point during its descent, the sum of the block's kinetic and potential energy will be equal to the initial potential energy at the top of the incline.

Since the kinetic energy of the block of ice is proportional to the square of its velocity, if it has half of its maximum kinetic energy, it means that its velocity is half of the maximum velocity.

The velocity of the block of ice increases as it slides down the incline, reaching its maximum value at the bottom of the incline. Therefore, the block of ice will have half of its maximum kinetic energy at a point that is halfway down the incline in terms of its vertical distance.

However, in terms of its horizontal distance, the block of ice will have the highest kinetic energy at the bottom of the incline, where it has the highest velocity. Therefore, the correct answer is B)  

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The force constant of the spring is 200.696 N/m & The height the object achieves when the spring releases its energy is 2.5087 m

The spring constant is the force needed to stretch or compress a spring, divided by the compressive or expansive distance. It's used to determine stability or instability in the spring, and therefore the system it's intended for. we know,

F = kx

Therefore,

k = F/x

We also know that the force being exerted on the spring is equal to the mass of the object. Hence, F = mg = 5.13 * 9.8 N = 50.174 N and we know compression due to the mass is 0.25m. Therefore,

K = 50.174/0.25 N/m

K = 200.696 N/m

Therefore, The Spring Constant is 200.696 N/m

On release, the spring potential energy gets converted to kinetic energy. Hence, on release, the height attained by the object is given by:

h = \(1/2 kx^{2}\)

We know that k=200.696 N/m and x=0.25 m. Therefore the height is:

h = \(1/2 (200.696 N/m)(0.25 m)^{2}\)

h = 2.5087 m

Therefore, the force constant of the spring is 200.696 N/m & The height the object achieves when the spring releases its energy is 2.5087 m

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By speeding up the process of doing work, power production may be enhanced. The following statement is true.

Description:

Work is completed at a rate determined by power. It is the ratio of work to time. It may be calculated mathematically using the next equation.

                                Power = Work / Time

                                 or, P = W / T

If the amount of effort/work increases and the amount of time decreases, power will grow. To complete a task in a short amount of time, a lot of force is used.

Therefore it is concluded that the questioned statement is true.

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Answer:

50volts

Explanation:

Each of the resistance is 10ohms. 2 in series and 2 in parallel. it means the 2 parallel can combines with total of 10×10÷(10+10)= 5ohms and combine in series with 10ohms which is 10+10+5= 25ohms. in series connection, we have same current flowing. therefore the voltage source will be 25ohms × 2amps = 50volts

The force winds up unchanged, at 100 N.

The upward acceleration of the acrobat is 5.82 m/s².

Acceleration is the rate of change of the velocity of an item with appreciation to time. Accelerations are vector portions. The orientation of an item's acceleration is given by the orientation of the net pressure appearing on that object.

Calculation:-

downward force = 588 N

upward tension force = 588 N

Extra upward force = 349 N

acceleration = net force/total mass

                  = 349 / 60

                  = 5.82 m/s²

Acceleration is the charge at which velocity modifications with time, in terms of each speed and route. A factor or an object moving in a straight line is accelerated if it quickens or slows down. movement on a circle is extended despite the fact that the rate is consistent because the course is continually changing.

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When an electron in a hydrogen atom jumps from the 3rd energy level to the 2nd energy level, it emits a photon. The objective is to calculate the wavelength of this emitted photon.

The energy levels of a hydrogen atom are quantized, meaning they have specific values. The energy difference between two energy levels can be calculated using the formula:

ΔE = E2 - E3

where ΔE is the change in energy, E2 is the energy of the 2nd level, and E3 is the energy of the 3rd level.

According to Bohr's model, the energy of an electron in a hydrogen atom is given by:

E = -13.6 eV/n^2

where E is the energy, n is the principal quantum number.

By substituting the values of n = 2 and n = 3 into the formula, we can calculate the energy difference ΔE.

The wavelength of the emitted photon is related to the energy difference ΔE by the equation:

ΔE = hc/λ

where ΔE is the energy difference, h is Planck's constant, c is the speed of light, and λ is the wavelength of the photon.

By rearranging the equation, we can solve for the wavelength λ and calculate its value.

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Answer: Metal ions tend to lose their electrons and form positive ions. Both iron and zinc are metals, so they both form ions that are positively charged. However, ions with the same charge repel each other. That is why an iron ion is not attracted to a zinc ion.

Answer: There are different kinds of conductors, most notably electrical and thermal conductors. But they are often inclusive of each other (electrical conductors are typically good thermal conductors). A conductor transmits something through its body with high efficiency while an insulator does not transmit very well. In the case of electricity, a conductor transmits electrical energy between two points while an insulator blocks the flow of electricity. Two examples of conductors are copper and silver. Two examples of insulators are wood and styrofoam.

Explanation:

Answer:

The reading will be the same.

Explanation:

Mass does not depend upon anything and it remains the same anywhere. What changes is the weight of the body because it depends upon gravity and is different at different places.

Giving me the brainest will be helpful.

The reading on the scale during free-fall will be the same. reading on the scale is independent of the external environment.

A weighing scale known as a balance is a device used to quantify weight or mass. The classic scale is made up of two plates or bowls that are suspended at equal distances from a fulcrum.

A person with a mass of 70kg is standing on a scale in an elevator suddenly the cable snaps, The reading on the scale during free-fall will be the same as the initial elevator condition.

Hence the reading on the scale during free-fall will be the same. reading on the scale is independent of the external environment.

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Answer:

the same    588 N

Explanation:

Answer:

Metamorphic

Explanation:

Metamorphic rocks form when rocks are subjected to high heat and high PRESSURE.

The magnitude of the net force on the object as shown in the diagram is 129.92 N.

The net force is the vector sum of all the forces that act upon an object.

To calculate the magnitude of the net force on the object, we use the formula below.

Formula:

Where:

From the question,

Given:

Substitute these values into equation 1

Hence, the net force on the object is 129.92 N.

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The difference between a physical change and a chemical change is composition. In a chemical reaction, there is a change in the composition of the substance. In a physical change there is a difference in the appearance, smell, or simple display of a sample of matter without a change in composition.

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The theory of gravity explains that: objects are attracted to each other by the force of gravity, and this force depends on the mass and distance between the objects.

The law of gravity, commonly known as Newton's law of universal gravitation, states that the force of gravity between two objects is directly proportional to the product of their masses and inversely proportional to the square of the distance between them.

Mathematically, the law of gravity can be expressed as F = G * (m1 * m2) / r^2, where F is the force of gravity, G is the gravitational constant, m1 and m2 are the masses of the objects, and r is the distance between their centers of mass.

On the other hand, the theory of gravity, specifically Einstein's theory of general relativity, provides a more comprehensive understanding of gravity. It explains gravity as the curvature of spacetime caused by the presence of mass and energy.

According to this theory, objects with mass or energy create a curvature in the fabric of spacetime, and other objects move along curved paths in response to this curvature.

In summary, the law of gravity provides a simplified description of the force of gravity, while the theory of gravity, specifically general relativity, provides a more detailed and accurate explanation of the nature of gravity as the curvature of spacetime.

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Answer:

Work is defined as the force applied over a distance. The force must be applied in the direction of motion. Work is the way that energy is added to an object or system. Because of conservation of energy, you can only get as much energy as you put in. Simple machines may reduce the force needed to complete a task, but cannot reduce the amount of work needed. The work output with a simple machine can never be greater than the work input.

Explanation:

I just used logic, and there's plenty of info to piece this together on the internet.

NOTE: There was not 25 points /:

Adam's uncertainty about whether he will be thanked or criticized for helping cook dinner relates to his behavior-outcome expectancies.

Behavior-outcome expectancies refer to a person's beliefs about the outcomes or consequences that are likely to follow from their actions. In this scenario, Adam is uncertain about the potential outcomes of his behavior, specifically whether he will be thanked or criticized for helping cook dinner. In this case, Adam's uncertainty specifically revolves around his behavior-outcome expectancies (D). He is unsure about the potential responses he will receive for his action of helping cook dinner. This uncertainty may stem from factors such as past experiences, social norms, or the specific dynamics and expectations within his household. Adam's uncertainty highlights the importance of understanding and managing behavior-outcome expectancies in interpersonal interactions and decision-making processes.

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