Compute the torque developed by an industrial motor whose output is 175 kw at an angular speed of 4300 rev/min.

The time taken for the tiny saliva to travel is 0.55 second.

The  horizontal distance traveled at speed of 4 m/s is 2.2 m.

The horizontal distance traveled at speed of 20 m/s is 11 m.

The time taken for the tiny saliva to travel is calculated as follows;

h = vt + ¹/₂gt²

where;

h = 0 + ¹/₂gt²

h = ¹/₂gt²

2h = gt²

t² = 2h/g

t = √(2h/g)

Substitute the given parameters and solve for time of motion;

t = √(2 x 1.5 / 10)

t = 0.55 second

X = Vx(t)

X = (4 m/s)(0.55)

X = 2.2 m

X = (20)(0.55)

X = 11 m

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It now radiates at a rate of 160 W.

The ratio of the energy emitted from a material's surface to the energy emitted from a blackbody, a perfect emitter with the same temperature, wavelength, and viewing conditions. It is a dimensionless number between 0 (for the ideal reflector) and 1. (for a perfect emitter).

Emissivity, which measures a material's capacity to emit infrared energy from its surface, is a crucial component of the ability to accurately measure temperature using either an infrared temperature sensor or a thermal imaging camera.

In addition to the material, a surface's emissivity also depends on the type of surface. In contrast to a roughened and oxidized metal surface, which will have a high emissivity, a clean and polished metal surface will have a low emissivity.

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Answer:13,3 m/s

Explanation:We can use the Torricelli equation:

v^2=v0^2+2ah

the initial velocity is 0

v0^2=0

so:

v^2=0+2*9,8*9

v^2=176,4

v=13,3 (approx)

Answer:

For me i think the answer will be 13.72m/s

The  bowling ball reaches the bottom first.

In the game of bowling, a bowling ball is a tough, spherical ball used to knock down bowling pins. The customary holes in ten-pin bowling and American nine-pin bowling balls are for the thumb and two other fingers. Five-pin bowling, candlepin bowling, duckpin bowling, and European nine-pin bowling all use balls with no holes that can fit comfortably in the palm of the hand. Ball motion and how it affects scoring are influenced by a complicated interplay of many different factors. The delivery of the bowler, the construction of the bowling ball, and the state of the lane can all be considered as contributing variables.

In a similar rolling race (no slipping), the two objects are a bowling ball and a circular hoop of unknown masses and radii. which reaches the bottom first?

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the molar mass of the given sample is 44.24kg.

To find the answer, we have to know about the concept of mole.

                      [tex]mole,n=\frac{m}{M}[/tex]

where, m is the given mass and M is the molar mass.

                      [tex]n=\frac{m}{M} \\M=\frac{n}{m}=\frac{0.5}{11.3*10^{-3}} =44.24kg[/tex]

                       [tex]m=n*M=1*44.24kg=44.24kg[/tex]

Thus, we can conclude that, the molar mass of the given sample is 44.24kg.

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Compare two separate regions of space. the electrical potential energy is the same in both regions. if the amount of charge in one region is larger, then potential in that region must be smaller.

The basic difference between electric potential and electric potential energy is that Electric potential at a point in an electric field is the amount of work done to bring the unit positive charge from infinity to that point, while electric potential energy is the energy that is needed to move a charge against the electric field.

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The fringes will be farther apart

The width of the centre maxima on a screen is twice the distance between the dark fringes on either side at a distance L away: The pattern of light spreads out as you get further away from the screen (bigger L). The pattern of light widens as the hole gets smaller (smaller a).

The double-slit experiment involves directing a beam of light at a wall that has two vertical slits. The pattern that results from the light passing through the slits is captured on a photographic plate. A single line of light is seen when one slit is covered, aligned with the open slit.

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Zinc metal (Zn) reacts with sulfur (S) to create zinc sulfide (ZnS), and the chemical reaction is: Zn (s) + S (s) = ZnS (s).

Importance of Zinc (Zn) and sulfur (S):

Chemical reaction -

In this experiment, heating a zinc(Zn) and sulfur(S) combination causes an interesting chemical reaction. A blinding flash of light, hot sparks, a hissing sound, and a cloud of white smoke in the shape of a mushroom are produced.

Therefore, the following chemical processes are taking place in the reaction: Zn (s) + S (s) = ZnS (s).

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During the evacuation of a system containing large amounts of moisture, it may be necessary to prevent freezing by increasing pressure using a gas such as Nitrogen

The scientific name for nitrogen is N, and it is a flavorless and colorless element. The ground beneath our feet contains nitrogen, as does the water we drink and the air we breathe. In fact, nitrogen makes up the majority of the atmosphere on Earth, making up around 78% of the atmosphere.

Nitrogen, which is necessary for plant growth, can be "fixed" by lightning or given to soils through fertilizers. a flavorless gas with no color. The chemical industry depends on nitrogen. It is used to create explosives, nylon, nitric acid, fertilizers, and colors. Nitrogen is always represented as N2 when it is in a gaseous state. It belongs to the group of seven diatomic molecules.

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Possible beat frequencies with tuning forks of frequencies 255, 258, and 260 Hz are 2, 3 and 5 Hz respectively.

The beat frequency refers to the rate at which the volume is heard to be oscillating from high to low volume. For example, if two complete cycles of high and low volumes are heard every second, the beat frequency is 2 Hz. The beat frequency is always equal to the difference in frequency of the two notes that interfere to produce the beats. So if two sound waves with frequencies of 256 Hz and 254 Hz are played simultaneously, a beat frequency of 2 Hz will be detected. A common physics demonstration involves producing beats using two tuning forks with very similar frequencies. If a tine on one of two identical tuning forks is wrapped with a rubber band, then that tuning forks frequency will be lowered. If both tuning forks are vibrated together, then they produce sounds with slightly different frequencies. These sounds will interfere to produce detectable beats. The human ear is capable of detecting beats with frequencies of 7 Hz and below.

A piano tuner frequently utilizes the phenomenon of beats to tune a piano string. She will pluck the string and tap a tuning fork at the same time. If the two sound sources - the piano string and the tuning fork - produce detectable beats then their frequencies are not identical. She will then adjust the tension of the piano string and repeat the process until the beats can no longer be heard. As the piano string becomes more in tune with the tuning fork, the beat frequency will be reduced and approach 0 Hz. When beats are no longer heard, the piano string is tuned to the tuning fork; that is, they play the same frequency. The process allows a piano tuner to match the strings' frequency to the frequency of a standardized set of tuning forks.

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An inductor is connected to an ac generator. As the generator's frequency increases, the current in the inductor decreases.

Inductors and chokes are basically coils or loops of wire that are either wound around a hollow tube former (air cored) or wound around some ferromagnetic material (iron cored) to increase their inductive value called inductance.

Inductors store their energy in the form of a magnetic field that is created when a voltage is applied across the terminals of an inductor.

The growth of the current flowing through the inductor is not instant but is determined by the inductors own self-induced or back emf value. Then for an inductor coil, this back emf voltage VL is proportional to the rate of change of the current flowing through it.

This current will continue to rise until it reaches its maximum steady state condition which is around five time constants when this self-induced back emf has decayed to zero. At this point a steady state current is flowing through the coil, no more back emf is induced to oppose the current flow and therefore, the coil acts more like a short circuit allowing maximum current to flow through it.

However, in an alternating current circuit which contains an AC Inductance, the flow of current through an inductor behaves very differently to that of a steady state DC voltage. Now in an AC circuit, the opposition to the current flowing through the coils windings not only depends upon the inductance of the coil but also the frequency of the applied voltage waveform as it varies from its positive to negative values.

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The average percent increase in the count rate over the voltage range of the Geiger tube plateau is less than 10 percent per 100 volts.

Geiger tubes are the sensing elements of Geiger counters, which are used to measure ionizing radiation. This tube is made of a thin-walled stainless steel and is filled with a mixture of Neon and Halogen gases at low-pressure

The Geiger–Müller tube is filled with an inert gas such as helium, neon, or argon at low pressure, to which a high voltage is applied. The tube briefly conducts electrical charge when a particle or photon of incident radiation makes the gas conductive by ionization.

After the quick rise, the counting rate levels off. This range of voltages is termed the ”plateau” region. Eventually, the voltage becomes too high and we have continuous discharge. The threshold voltage is the voltage where the plateau region begins.

For a good G-M tube, the plateau region should rise at a rate less than 10 percent per 100 volts. That is, for a change of 100 volts, should be less than 0.1.

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The distance traveled by the particle at the given time interval is 0.28 m.

The position of the particle at the given time is calculated as follows;

x = 2 sin2(t)

y = 2 cos2(t)

x(0) = 2 sin2(0) = 0

y(0) = 2 cos2(0) = 2(1) = 2

x = 2 sin2(t)

y = 2 cos2(t)

x(4) = 2 sin2(4) = 0.28

y(4) = 2 cos2(4) = 2(1) = 1.98

d = √[(x₄ - x₀)² + (y₄ - y₀)²]

d =  √[(0.28 - 0)² + (1.98 - 2)²]

d = 0.28 m

Thus, the distance traveled by the particle at the given time interval is 0.28 m.

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The differential heating of Land and water depends on amount of solar energy reaching earth.

Land is a better conductor of heat than water, heating up and cooling down faster than water.

In summer, amount of solar radiation is highest hence difference of water and land temperature is highest. Air over land heats up and expands hence the air rises above. This rising air is replaced with the surrounding air rich in moisture content from over ocean surface. The degree of differential heating depends on amount of solar energy reaching earth's surface.

This results in Sea Breeze which is from a large body of water towards landmass due to difference in pressure created.

Land Breeze blows towards sea from land at night. It is due to difference in rate of cooling of land and ocean.

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No, because superconductivity cannot occur if there is resistance

In addition to explaining electrical resistance, equilibrium distance theory also foretells the existence of superconductivity. According to its postulates, electrical resistivity decreases with distance from the equilibrium. There is only superconductivity at zero distance, with no resistance

The ability of some materials to transmit electric current with virtually little resistance is known as superconductivity.

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Answer: 10 m/s^2

Explanation:

So I think the answer might be 10 m/s^2, following the equation: d=1/2a(t^2).

Variables:

d=45(m)

t=3(s)

a=?

We know the variables "d" and "t" in the equation and have to solve for "a".

So when we plug it in it's:

45=1/2(a)(3^2)

45=1/2(a)(9)

45=4.5(a)

10=(a)

The kinetic energy of the ejected electron (photoelectron) is equal to the energy of the photon minus the work function (E required to eject the photoelectron).

The  process of final kinetic energy of the electron upon reaching the anode compare to its initial potential energy immediately after it has been ejected -

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Answer:

The law of conservation of momentum applies to a collision between two bodies since Select one 0 a they exert forces on each other respectively inversely proportional to their masses 00 they exert forces on each other respectively proportional to their masses their accelerations are proportional to their masses they ...

Answer:

The law of conservation of momentum applies to a collision between two bodies since they exert equal and opposite forces on each other.

Numerous final states are possible in collisions of elementary particles, but they are limited by the requirements of total energy and momentum conservation. It is necessary to utilize the relativistic formula for momentum and energy since high velocities are typically involved. These two laws provide two equations that may be used to determine which ultimate states are permitted by these two rules and which are not. For instance, it is conceivable to demonstrate that a photon cannot split into two gammas and that a second body, such as a nucleus, is required to satisfy both conservation principles. To forecast probabilities of various end stat configurations, a more thorough theoretical model of the collision is required.

Thank you,

Eddie

This bending of light is called "refraction".

Simply said, reflection is the act of light reflecting back when it strikes a medium on a plane. Refraction is the process by which light shifts as it travels through a material, causing the light to bend. The medium receives the light that originally entered it back.

Refraction is the scientific term for this bending of light. It occurs when light travels through one medium and then through another where the speed of the light is different. It occurs when light travels from the air into the glass in the telescope eyepiece or even in your spectacles.

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Answer:

E. refraction

Explanation:

An electric motor has an effective resistance of 29. 4 ω and an inductive reactance of 42. 6 ω. When working under load. the rms voltage across the alternating source is 442 v.  The rms current will be  8.54 A

AC stands for “Alternating Current,” meaning voltage or current that changes polarity or direction, respectively, over time. AC electromechanical generators, known as alternators, are of simpler construction than DC electromechanical generators.

RMS or root mean square current/voltage of the alternating current/voltage represents the D.C current/voltage that dissipates the same amount of power as the average power dissipated by the alternating current/voltage. For sinusoidal oscillations, the RMS value equals peak value divided by the square root of 2.

I (RMS) = RMS voltage / [tex]\sqrt{R^{2}+ X_{L} { ^{2} }[/tex]

           =  442 / [tex]\sqrt{29.4^{2} + 42.6^{2} }[/tex]

           = 442 / [tex]\sqrt{864.36 + 1814.76}[/tex]

           = 442 / [tex]\sqrt{2679.12}[/tex]

           = 8.54 A

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The ecosystem refers to all of the living and nonliving things on earth that sustain life.

Ecosystem

An ecosystem, also known as an ecological system, is made up of all the organisms and the physical setting in which they live. The nutrition cycles and energy flows connect these biotic and abiotic elements. Photosynthesis is how energy enters the system and is absorbed by plant tissue. Animals play a significant part in the transfer of materials and energy through the system by eating plants and one another. They also have an impact on the biomass levels of the microbial and plant communities. In addition to facilitating nutrient cycling by transforming nutrients held in dead biomass back into a form that can be easily utilised by plants and microorganisms, decomposers also release carbon into the atmosphere through the breakdown of dead organic matter.

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Plane waves incident upon a small opening in a barrier will fan out and decrease in amplitude.

In physics, a plane wave is a special case of wave or field: a physical quantity whose value, at any moment, is constant through any plane that is perpendicular to a fixed direction in space.

For any position vector x in space and any time t, the value of such a field can be written as :

[tex]{\displaystyle F({\vec {x}},t)=G({\vec {x}}\cdot {\vec {n}},t),}[/tex]

[tex]{\displaystyle F({\vec {x}},t)=G({\vec {x}}\cdot {\vec {n}},t),}{\displaystyle F({\vec {x}},t)=G({\vec {x}}\cdot {\vec {n}},t),}[/tex]

where [tex]{\displaystyle {\vec {n}}}\vec[/tex] is a unit-length vector, and [tex]{\displaystyle G(d,t)}{\displaystyle G(d,t)}[/tex]  is a function that gives the field's value as dependent on only two real parameters: the time t, and the scalar-valued displacement

[tex]{\displaystyle d={\vec {x}}\cdot {\vec {n}}}{\displaystyle d={\vec {x}}\cdot {\vec {n}}}[/tex]

of the point [tex]{\displaystyle {\vec {x}}}{\vec {x}}[/tex] along the direction [tex]{\displaystyle {\vec {n}}}\vec[/tex]. The displacement is constant over each plane perpendicular to [tex]{\displaystyle {\vec {n}}}\vec[/tex].

The values of the field may be scalars, vectors, or any other physical or mathematical quantity. They can be complex numbers, as in a complex exponential plane wave.

When the values of F are vectors, the wave is said to be a longitudinal wave if the vectors are always collinear with the vector [tex]{\displaystyle {\vec {n}}}\vec[/tex], and a transverse wave if they are always orthogonal (perpendicular) to it.

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We learned that We are in the disk of the Galaxy, about 5/8 of the way from the center.

Shapley, who was based in Boulder, Colorado, utilised Cepheid variable stars to determine the Milky Way Galaxy's size and the Sun's location within it through the use of parallax. He put out his "liquid water belt" theory, now referred to as the idea of a livable zone, in 1953.

Milky way Galaxy-

There are many stars, grains of dust, and gas in the Milky Way. It is known as a spiral galaxy because, from the top or bottom, it would appear to be whirling like a pinwheel. About 25,000 light-years from the galaxy's nucleus, the Sun is situated on one of the spiral arms.

Approximately 5/8 of the way from the galaxy's nucleus, we are in the disc. William Herschel believed that the Sun and Earth were about in the middle of the vast cluster of stars known as the Milky Way.

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RED colour of light you should look for if you wanted to see a star behind the interstellar cloud.

In our galaxy and other galaxies, an interstellar cloud is often a buildup of gas, plasma, and dust. In other words, an interstellar cloud is a portion of the interstellar medium (ISM), the matter and radiation that is present in the space between star systems in a galaxy, that is denser than typical.

Interstellar dust has an extremely saturated orange to brownish-red tint that turns saturated red when there is a modest quantity of hydrogen emission.

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The elevation in reservoir  at  the rate of flow using is 03m/s  is 114m.

The Reynolds range is the ratio of inertial forces to viscous forces. The Reynolds variety is a dimensionless variety used to categorize the fluids structures in which the impact of viscosity is crucial in controlling the velocities or the flow sample of a fluid.

The reason of the Reynolds number is to get a few experience of the relationship in fluid glide between inertial forces (this is those that maintain going by using Newton's first law – an item in motion stays in movement) and viscous forces, this is people who cause the fluid to come back to a forestall because of the viscosity of the fluid.

calculation,

Let L = 100 m pipe

     L1 = 150 m pipe

H f = friction losses

Using Reynolds number, relative  roughness, friction co- effiicients and friction losses

Substitute the value in equation

Z = 110= 0.48= 3.54

Z = 114m

Therefore water surface elevation at reservoir  is 114 meter.

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The potential difference across a and b is 15 v. determine the electrical charge on the 3 μf capacitor will be 45 *  [tex]10^{-6}[/tex] C

Capacitance, property of an electric conductor, or set of conductors, that is measured by the amount of separated electric charge that can be stored on it per unit change in electrical potential. Capacitance also implies an associated storage of electrical energy.

Charge (Q) stored in a capacitor is the product of its capacitance (C) and the voltage (V) applied to it. The capacitance of a capacitor should always be a constant, known value. So we can adjust voltage to increase or decrease the cap's charge. More voltage means more charge, less voltage... less charge.

charge = capacitance * voltage

Q = CV

   =  3  * [tex]10^{-6}[/tex] * 15 v

   = 45 *  [tex]10^{-6}[/tex] C

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Number of rulings per centimeter for the grating 4.5 x 10^3 grooves/cm

Given:

wavelength of light = 635.00 nm

angle of first order = 38.0∘

To Find:

Length of slits marked on grafting

Solution: Grafting and budding are horticultural techniques used to join parts from two or more plants so that they appear to grow as a single plant

We use the grating equation dsinθ = mλ

d = mλ/sinθ

d = 1 x 635x10^-7 m/sin 38.0∘

d = 2189.6 x 10^-7 m

Thus the grating gauge is

1/d = 0.00045 x 10^7 = 4.5 x 10^3 grooves/cm

So, number of rulings per centimeter for the grating 4.5 x 10^3 grooves/cm

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The earliest astronomical records appear to have been made by the ancient Chinese, Egyptians, and Babylonians in order to determine when to hunt plants and animals

A conceptual investigation of the properties of astronomical records and the links that exist between various types of data yields an astronomical records data model.

The paintings on cave walls that date back 30,000 years are the earliest records of astronomical observations that we have. The night sky piqued their keen curiosity in the ancient Egyptians. They were particularly captivated by two bright stars that were constantly seen orbiting the North Pole.

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The electric field at distance r = 1 cm from the axis of the cylinder is   [tex]1.02*10^{4} N/C[/tex]

Electric Field= 2kρπr

Given,

Charge density(ρ)= 18 μc/m3.

radius = 1 cm = 0.01m

k=9*[tex]10^{9}[/tex]

Electric Field= 2kρπr=2*9*[tex]10^{9}[/tex]*18*[tex]10^{-6}[/tex] * π* 0.01= [tex]1.02*10^{4} N/C[/tex]

Physically, electrically charged particles are surrounded by an electric field, which acts to either attract or repel all other charged particles in the vicinity. A system of charged particles' physical field is also referred to in this phrase. Charges and time-varying currents in electric systems give rise to electric fields. The electromagnetic field—one of the four basic interactions of nature—exudes both electric and magnetic fields. Many branches of physics place a premium on electric fields, which are also used to great effect in modern electrical engineering. The attractive force holding the atomic nucleus and electrons together in an atom, for example, is the electric field in atomic physics and chemistry. The chemical bonds that form between atoms to form molecules are also caused by this force.

An infinitely long cylinder of radius r = 2 cm carries a uniform charge density rho = 18 μc/m3. calculate the electric field at distance r = 1 cm from the axis of the cylinder?

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The ramp does 480J of useful work with an efficiency of 80% .

=480J

Thus, we can conclude that the useful work done by the ramp is 480J.

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