What do simple machines accomplish? Responses Simple machines keep the total amount of work the same, but make work easier. Simple machines keep the total amount of work the same, but make work easier. Simple machines increase the total amount of work. Simple machines increase the total amount of work. Simple machines keep the total amount of work the same, but make work more difficult. Simple machines keep the total amount of work the same, but make work more difficult. Simple machines reduce the total amount of work.

False. The water table is not always level or flat.

The water table refers to the upper surface of the zone of saturation in the ground, where water fills all the pores, fractures, and spaces between soil and rock particles. While it is commonly thought of as a flat, horizontal surface, the water table can actually vary in shape due to factors such as topography, geological structures, and variations in underground materials. In some areas, the water table may follow the general shape of the land surface, with contours and slopes, while in others, it can be affected by impermeable layers or aquifers that cause changes in its level. As a result, the water table is not always flat or level, but rather a dynamic surface influenced by various natural factors.

As a result, the water table can vary greatly in depth and shape across different regions and is not always flat or level.

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Answer: i don’t know maybe later i will ask thAT question

Explanation:

Explanation:

an electrical load is the part of an electrical circuit in which current is transformed into something useful. examples include a lightbulb, a resistor and a motor. a load converts electricity into heat, light or motion. put another way, the part of a circuit that connects to a well-defined output terminal is considered an electrical load.

The exhaust brake prevent the tow vehicle from going too fast and it reduces the likelihood of an accident. Automatic Exhaust Brake is  maintains vehicle speed.

Exhaust brakes prevent vehicles from going downhill too fast. Automatic Smart Exhaust Brake delivers smoother, less aggressive exhaust braking characteristics during the downhill descents.

It does not apply obvious braking if the vehicle speed is not increasing. Automatic Exhaust Brake is  maintains vehicle speed, whereas Full Exhaust Brake is intended to reduce vehicle speed.

Exhaust brake is a means of slowing diesel engine by closing off the exhaust path from engine and causing exhaust gases to be compressed in the exhaust manifold and in cylinder.

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Answer:

The gravitational force between two objects, one of mass M1 and the other of mass M2, is:

F = G*M1*M2/R^2

Where G is a constant:

G = 6.6x10^11 m^3*/(kg*s^2)

And R is the distance between the two objects.

M1 = 5.9742x10^24 kg

M2 = 7.36x10^22 kg

R = 382171 km = 382171000 m

Then the gravitational force is:

F = 6.6x10^-11 m^3*/(kg*s^2)*(5.9742x10^24 kg)*(7.36x10^22 kg)/(382171000 m)^2

F = 1.987x10^20 N

Answer:

both velocity and acceleration

Explanation:

answer May be 3

Answer:

false is the answer . in my point of view

The heating curve could be describing processes such as boiling and endothermic reactions.A heating curve is a graphical representation that shows the changes in temperature as a substance is heated.

It typically consists of two distinct segments: heating and phase change. Boiling is a process where a substance changes from its liquid phase to its gaseous phase. During the heating phase, the temperature of the substance gradually increases until it reaches its boiling point. At this point, the substance undergoes a phase change, and the temperature remains constant until all the liquid has vaporized. Therefore, the heating curve could be describing the process of boiling.

Endothermic reactions are chemical reactions that absorb heat from their surroundings, resulting in a decrease in temperature. If the heating curve represents the temperature changes during an endothermic reaction, we would observe a decrease or plateau in temperature during the reaction, followed by a subsequent increase. Thus, the heating curve could also be describing an endothermic reaction.

Condensation, on the other hand, is the process by which a substance changes from its gaseous phase to its liquid phase. It typically occurs when a gas is cooled down, and the temperature decreases. However, the heating curve represents temperature changes during the heating process, not cooling. Therefore, condensation is not applicable to the heating curve.

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Stellar equilibrium is a balance between Outward pressure and inward gravity.

As long as a balance is maintained between the gravity that pulls the star inwards and the pressure that pushes it outwards, the stars are fine. During most of a star's life, its internal heat and radiation are provided by nuclear reactions in the star's core. Star balance refers to the balance of forces that exist within a star.

Stars are composed of helium gas and hydrogen gas constantly undergoing nuclear reactions in their core. The pressure of these reactions pushes out of the star. At the same time gravity is pushing the star. At the main-sequence stage of stellar evolution, the outward-pushing radiation pressure and the inward-pushing gravitational pressure are precisely balanced. In a stable star, the pressure of gas pushing away from the center is the same as the gravitational force pulling atoms toward the center.

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Answer:

As the temperature increases, the volume of the material also increases. This is known as thermal expansion. It can also be explained as the fractional change in the length or volume per unit change in the temperature.

The relation between alpha, beta, and gamma is given in the form of a ratio and the ratio is 1:2:3 and can be expressed as:

alpha=fracbeta2=fracgamma3

Following is the relation between the three:

L = L (1 + α.ΔT)

Where, α is the coefficient of linear expansion  

A = A (1 + β.ΔT)

Where, β is the coefficient of aerial expansion

V = V (1 + γ.ΔT)

Where, γ is the coefficient of cubical expansion  

V = V + γV.ΔT

V = V (1 + γ.ΔT)  

L3 = L3 (1 + α.ΔT)3

L3 = L3 (1 + 3α.ΔT + 3α2.ΔT2 + α3.ΔT3)

L3 = L3 (1 + 3α.ΔT)

Alpha, beta, and gamma are related to one another in the form of a ratio, and that ratio is 1:2:3, and yes they are universal constants.

A substance's volume expands while its mass stays constant. Heating is typically the cause of expansion. When a substance is heated, the molecular bonds separating its particles weaken, the particles move more quickly, and the substance expands as a result.

Determine the relation as shown below,

L = L (1 + α × Δ T)

here, α is the coefficient of linear expansion  

A = A (1 + β × Δ T)

here, β is the coefficient of aerial expansion

V = V (1 + γ × Δ T)

here, γ is the coefficient of cubical expansion  

V = V + γ × V × Δ T

V = V (1 + γ × ΔT)  

L3 = L3 (1 + α × Δ T)3

L3 = L3 (1 + 3α × ΔT + 3α2 × ΔT2 + α3 × ΔT3)

L3 = L3 (1 + 3α × Δ T)

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The tropical rainforests of Southeast Asia have over 6,000 species of plants and 450 species of birds.

These are the forests that get the most of the year. They are the most diverse forest on the earth such as the amazon.

These are the forests with very large grasses and occasional trees. They are found in Brazil and India.

These are the temperate forests in which trees shed all their leaves in one seson.

Therefore, the tropical rainforests of Southeast Asia have over 6,000 species of plants and 450 species of birds.

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Answer:

Its b. the tropical rainforest

Explanation:

a. u is harmonic for let u(x, y) = xy because ∂²u/∂x² + ∂²u/∂y² = 0.

b. A harmonic conjugate of u is v = (x² - y²)/2.

To determine that u is harmonic, we need to verify whether u satisfies Laplace's equation or not. Laplace's equation is given by:

∂²u/∂x² + ∂²u/∂y² = 0

On differentiating u(x, y) = xy partially, we get,

∂u/∂x = y∂u/∂y = x

On differentiating partially again, we get,

∂²u/∂x² = 0∂²u/∂y² = 0

Therefore, ∂²u/∂x² + ∂²u/∂y² = 0

Thus, u is harmonic.

To find a harmonic conjugate of u, we need to find v(x, y) such that u + iv is analytic. In other words, v must satisfy the Cauchy-Riemann equations. The Cauchy-Riemann equations are given by:

∂u/∂x = ∂v/∂y∂u/∂y = -∂v/∂x

On substituting u = xy in the above equations, we get,

∂v/∂y = x∂v/∂x = -y

On integrating the above equations, we get

v = (x² - y²)/2 + C

Thus, a harmonic conjugate of u is v = (x² - y²)/2.

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Answer:

The leaves of an electroscope will return to their original position if the electroscope is not grounded because the final condition of the electroscope is the same as it was originally.

If however if one touches the terminal of an electroscope while the scope is exposed to a source of static electricity, and then the contact with the terminal is removed before the source of static electricity is taken away, then any excess electrons will remain on the electroscope and the leaves will remain diverged.

Answer:

I'll give you all the answers, I know them all, I just did this. I need $1 via cas ap tho since it's hard

Answer:

a. 9.52 cm b. 4.34 × 10⁶ m/s

Explanation:

a. The horizontal distance traveled by the electron when it hits the plate.

The electric force F on the electron due to the electric field E of mass, m is

F = -eE = ma

a = -eE/m where a = acceleration of electron

The vertical distance moved by the electron is given by

Δy = ut +1/2at²

u = initial vertical velocity = 0. and take the top plate as y = 0 and bottom plate as y

So,

0 - y = 0 × t + 1/2at²

-y = 1/2at²

substituting a = -eE/m

-y = 1/2(-eE/m)t²

y = eEt²/2m

making t subject of the formula,

t = √(2ym/eE) where t is the time it takes to reach the bottom plate.

Since E = 4.0 × 10² N/C, y = distance between plates = 2.0 cm = 0.02 m, m = 9.109 × 10⁻³¹kg and e = 1.602 × 10⁻¹⁹ C

t = √[(2 × 0.02 m × 9.109 × 10⁻³¹kg)/(1.602 × 10⁻¹⁹ C × 4.0 × 10² N/C)]

t =  √[(0.36436 × 10⁻³¹kgm)/(6.408 × 10⁻¹⁷ N)]

t = √[(0.0569 × 10⁻¹⁴kgm/N)t

t = 0.238 × 10⁻⁷ s

t = 23.8 × 10⁻⁹ s

t = 23.8 ns

The horizontal distance moved when it hits the plates x = vt where v = initial horizontal velocity = 4.0 × 10⁶ m/s

x = 4.0 × 10⁶ m/s × 23.8 × 10⁻⁹ s

= 0.0952 m

= 9.52 cm

b. The velocity of the electron as it strikes the plate.

To find the velocity of the electron as it strikes the plates, we calculate its final vertical velocity V as it strikes the plate. This is gotten from

v' = u + at since u = 0,

v' = at

= -eEt/m

= -(1.602 × 10⁻¹⁹ C × 4.0 × 10² N/C × 0.238 × 10⁻⁷ s)/9.109 × 10⁻³¹kg

= -1.525 × 10⁻²⁴ Ns/9.109 × 10⁻³¹kg

= -0.167 × 10⁷ m/s

= -1.67 × 10⁶ m/s

So, the resultant velocity as it strikes the plate v = √(v'² + v²)

= √((-1.67 × 10⁶ m/s)² + (4 × 10⁶ m/s)²)

= √(2.7889  + 16) × 10⁶ m/s

= √18.7889 × 10⁶ m/s

= 4.335 × 10⁶ m/s

≅ 4.34 × 10⁶ m/s

The force has not been generated because Option A: The threshold minimum has not been reached.

Threshold stimulus is the energy or force that is capable of giving rise to an action potential. It ranges between -50 mV to -55V. Thus, when 0.2V elicits 0g of force, the force has not been generated because the threshold minimum may not be reached appropriately.

The force that rises in a neuron is a result of the action potential. Action potential is a sudden, fast, and transitory change of the resting membrane potential. Action potential can only arise in neurons and muscle cells. the property of these nerves to generate an action potential is called excitability.

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Complete question is:

You should observe that 0.2 V elicits 0 g of force. Why hasn't a force been generated?

-The threshold stimulus has not been reached

- A muscle will not respond until it is stimulated with a threshold stimulus or a stimulus greater than the threshold stimulus.

Answer:

Given

velocity( v) =3m/s

momentum (p) =9kg.m/s

mass (m) =?

Form

p=mv

m=p/v

(9kg.m/s) /3m/s

p=3kg

mass =3kg

List of things that could affect your body weight:

Answer:

mass and gravity

Explanation:

From a PHYSICS standpoint:

mass   and gravity   determine the weight of a body

Answer:Potential energy can transfer into other forms of energy like kinetic energy. Kinetic energy is energy an object has because of its motion. ... If released, as the ball moves faster and faster toward the ground, the force of gravity will transfer the potential energy to kinetic energy

Explanation:

Observations in our solar system support the conclusion that collisions between portions of material in the solar system cancel their up-and-down motions, leaving them revolving in a thin disk around the Sun. Observations do not support the conclusion that objects in the far outer solar system orbited so slowly that they would have experienced few collisions, leaving behind small, solid bodies.

The Nebular Condensation Theory proposes that our solar system is formed from a rotating disk of gas and dust called the solar nebula. According to this theory, collisions between portions of material in the solar system canceled their up-and-down motions, resulting in a thin disk of material revolving around the Sun. Observations of our solar system, such as the flattened shape of the planetary orbits and the presence of a protoplanetary disk around young stars, support this conclusion.

Additionally, observations suggest that large collisions can change the rotation directions of planets. This is evident in the case of Uranus, which has an extreme axial tilt likely caused by a past collision. Other examples of planets with tilted axes or unusual rotation patterns also support this conclusion.

However, observations do not support the conclusion that objects in the far outer solar system orbited slowly enough to experience few collisions, resulting in small, solid bodies. Instead, the outer solar system is known to contain a significant population of icy objects, such as dwarf planets and comets, which have likely experienced numerous collisions throughout their history. These collisions have shaped their orbits, compositions, and sizes.

Overall, while some conclusions of the Nebular Condensation Theory plus collisions are supported by observations in our solar system, others do not find substantial evidence in favor.

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A small system of stars held together by gravity is called a galaxy.

A star is described as an astronomical object comprising a luminous spheroid of plasma held together by its gravity.

A galaxy is a huge collection of gas, dust, and billions of stars and their solar systems, all of which are held together by gravity.

Stars are made within the clouds of dust and scattered throughout most galaxies, example of such as a dust cloud is the Orion Nebula.

In conclusion, stars are giant spheres of superhot gas made up mostly of hydrogen and helium.

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Answer:

Small Devices

Explanation:

firefighters wear small electronic devices that transmit to a location at a command system.

When played without using fingers, it produces the sound of the pitch a (440 Hz). You should shorten it to play the note c at a distance of 2.6 cm (523 Hz).

A sound pressure wave's frequency, also known as pitch, is the number of times it repeats itself every second.

Speed of wave propagation is directly proportional to the square root of the tension of the string and inversely proportional to the square root of linear density

\(\rm v = \sqrt{\frac{T}{u}}\)

Speed of the wave is the product of the frequency and the wavelength. The fundamental frequency wavelength is two times the string length.

f= 2L

V= f × λ

440×2×0.16 = 523×2L

L = 0.134 m

L = 13.4 cm

The string length for playing note C  will be 13.4 cm

The distance up to which hand is to be put so that the C note will play;

L=16- 13.4

L= 2.6 cm

Hence,at a distance  of  2.6 cm you should shorten it to play the note c (523 hz).

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Answer:

(a) t = 0.02111

(b) F = 337.5 N

Explanation:

We can apply work energy theorem to solve this problem,

\(0 - \dfrac{1}{2}mv^2 = F_{avg}.\Delta x\)

(change in kinetic energy = Force applied)

substituting the values given in the question,

\(- \dfrac{0.75}{2}3^2 = F_{avg}.0.01\)

solving we get,

\(F_{avg} = -337.5 \, N\)

We have the equation,

\(F_{avg} = ma_{avg}\)

substituting the value of m and F we get,

\(a_{avg} = -450 \, m/s^2\)

We can calculate the duration of impact using the kinematical equations,

\(v = u + at\)

\(0 = 9.5 - 450t\)

\(t = 0.02111\) s

The statement that describes an energy measurement is one gram of wood stores 16,000 J, therefore the correct answer is option D

It can be defined as the form of the energy in which heat is transferred from one body to another body due to their molecular movements, thermal energy is also known as heat energy.

Thermal energy can be produced with help of various means such as by burning fossil fuels, with the help of solar energy.

The Joule is the recognized unit of measurement for energy (J). Kilowatt/hour (kWh), which is used specifically for electric energy, should be listed among the most used units for measuring energy (in fact it is used to calculate electricity bills). The Terawatt/hour (TWh), or one billion kW/h, is used to calculate the output of big power facilities or the country's consumption.

Thus, The statement that describes an energy measurement is one gram of wood stores 16,000 J, therefore the correct answer is option D

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Directive decision making is used by leaders and CEOs of companies to make quick decisions without delay and hesitation for fast results.

Instead of seeking for further information from others, their conclusions are based on their own knowledge, experience, and reasoning. The benefits of this technique are speedy decision making, unambiguous ownership, and minimal additional communication.

This method of decision-making works effectively in circumstances that are stable and have recurring patterns and events. Save directive judgments for situations where there is an unambiguous and evident cause-and-effect link; in other words, where there is a collectively accepted correct response.

A leader's role is very important in directive decision making it does not have to be considered the thought of others in such scenarios and take action on his own responsibility office actions without consideration of what others might think.

Therefore, Directive decision making is used by leaders and CEOs of companies to make quick decisions without delay and hesitation for fast results.

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Directive decision-making style allows senior leaders to quickly act

What is decision-making that is directive?

They draw their findings from their own knowledge, experience, and reasoning rather than asking others for more information. This method has the advantages of rapid decision-making, clear ownership, and minimal extra communication.

In situations with predictable patterns and events, this approach of decision-making performs well. Avoid making directive decisions until there is a clear and obvious cause-and-effect relationship, or when there is a generally agreed-upon correct reaction.

The role of a leader is crucial in the process of making directed decisions; in such situations, he must act on his own initiative and without taking into account what others may think.

In order to make judgments quickly and without hesitation in order to get results quickly, leaders and CEOs of businesses employ the directive decision-making process.

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Answer: 1 m/s/s

Explanation: One Newton is defined as the amount of force required to give a 1-kg mass an acceleration of 1 m/s/s.

Ploughing field with harrow pulled by a tractor being a modern technology​ is true.

This involves the use of scientific knowledge to tackle different life problems and has different sectors.

Ploughing field with harrow pulled by a tractor involves machines and not manual labour which makes it a modern technology.

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Proportion refers to size relationships between parts of a whole. It involves the relative sizes, dimensions, and ratios of different elements or components within a system or object.

Proportion is an important concept in various fields such as art, architecture, design, and mathematics. It helps create visual harmony, balance, and aesthetic appeal by ensuring that the sizes and proportions of elements are pleasing and well-balanced.

In design and architecture, proportion is often used to create a sense of balance, symmetry, and visual stability.

Understanding and applying proportion is crucial for creating visually appealing and harmonious compositions in both two-dimensional and three-dimensional spaces.

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