when a 58 g tennis ball is served, it accelerates from rest to a speed of 45 m/s. the impact with the racket gives the ball a constant acceleration over a distance of 44 cm. what is the magnitude of the net force acting on the ball?

The bolometric absolute magnitude of the bear's foot is M = 68.70.

Solution:

Bear's foot has a luminosity of 2 = 10 Watt

We have to find the bolometric absolute magnitude foot of the bear

we know the bolo metric absolute magnitude formula

M = -2.5 log10 (2x) —(1) will but 78.7 x 3.83×1026 20 гое 2x = Lx → refer luminosity value of L and Lx in the equation.... (i)

M = -2.5 log10 ( 10/ 78.7 x 3.83 x 10²⁶

M = -2.5 log 10 (10/301.42 x  10²⁶)

M = -2.5 -27.48

M = 68.70

We propose the radiation temperature T as a measure of circumstellar eclipses and the evolutionary development of young stellar bodies. T is the temperature of a blackbody with the same mean frequency as the observed continuum spectrum. A bolometer is an instrument used to measure radiation by measuring the temperature rise of a blackened metal strip in one of the arms of a resistance bridge.

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The heat is convicted through the soup. The soup heats up as the spoon is in the soup making the spoon hot. its like saying pouring hot water into a cup and its hot on your hand its convecting through the glass and heating up

Part a: Displacement current: I(d1) = 8 ampere.

Part b: displacement current: I(d2) = 2.812 x 10⁻¹ A.

Part c: magnetic field at a r = 3 cm radial distance:  1.875 x 10⁻⁶ T.

Part a: Displacement current within the 21 cm-radius circular loop.

Since the capacitance plate has a 16 cm radius, the current can only flow in a loop of this size, or the total displacement current flows within a loop with a 21 cm radius.

Displacement current;

I(d1) = ∈₀.dФ(e)/dt

I(d1) = ∈₀ x A x (Qr.d/∈₀.A.d)

I(d1) = Qr

I(d1) = 8 C/s

I(d1) = 8 ampere of Displacement current.

Part b: displacement current flowing through a 3 cm-diameter circular loop

Density of the displacement current;

Jd = I(d1)/A

Jd = 8/(8.042 x 10⁻²)

Jd = 99.478 A/m²

For the radius r, area of loop

A1 = πr²

A1 = 3.14 x (0.03)²

A1 = 2.827 x 10⁻³ m²

Thus, displacement current;

I(d2) = Jd x A1

I(d2) = 99.478 x 2.827 x 10⁻³

I(d2) = 2.812 x 10⁻¹ A.

Part c: magnetic field at a r = 3 cm radial distance.

Field of magnetism:

B = μ₀.I(d2) / 2πr

B = 4π x 10⁻⁷ x 2.812 x 10⁻¹ / 2π x 0.03

B = 1.875 x 10⁻⁶ T

Thus, magnetic field at a r = 3 cm radial distance is 1.875 x 10⁻⁶ T.

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Due to the Earth's rotation, the seas' neap tides alter every six hours or so. The Moon and the Sun's gravitational pull on the ocean's water produces the tides themselves.

Waves from deep water become breaking waves when they enter the shallow water. The water particles drag along the bottom and flatten their orbit when the wave energy contacts the ocean floor (Fig. 4.18 B). When the water depth is less than half the wavelength (D 1/2 L), transitional waves are produced.

A wave's energy release when it approaches a beach or coastline creates a current that travels parallel to the shoreline. A "longshore current" is the name given to this kind of current.

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Because of their electrical configurations, they have been given the more apt name, Group 18. Possibilities Both a C are really the isotopes since their outer layer is completed but they do not interact with anyone.

Noble gases are all seven of the basic components that make up Division 18 of the chemical elements. The constituent elements include hydrogen, xenon, radon, atoms, mercury, radon, and oganesson (Og). Inert, flavorless, unscented, and nonflammable gases are known as noble gases.

This definition classifies copper, silver, and gold as noble metals. A superb metal is also one that is resistant to corrosion and oxidation.

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A.) Bumper Cars B.) waves in a ripple tank C.)electromagnetic radiation D.)an orchestra . Therefore all of the above.

According to the principle of superposition for mechanical waves, the position of the medium's mass element at a place where two or more moving waves join is equal to the algebraic total of the positions originating from the individual waves.

When two (or more) waves are traveling through the same medium simultaneously, the principle of superposition can be applied to them. Without causing any disturbance, the waves pass through one another.

They overlap and produce a phenomenon called wave interference.

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The given question is incomplete, the complete question is:

The superposition of mechanical waves can be observed in the movement of :

A. Bumper Cars

B.  waves in a ripple tank.

C. electromagnetic radiation

D. an orchestra

The time taken by the ball to fall on the ground is 2.55 seconds

The height of the building = 50 m

The initial speed = 25 m/s

The time taken to reach the ground can be found using the formula

                 v = u + at

where u is the initial speed

           a is the acceleration

           t  is the time taken

At the highest point, the speed is zero which is v = 0 and the acceleration is due to gravity which is in the opposite direction of the movement of the ball. Thus,

             0 = u - gt

Let us rearrange it,

             t = u/g

Let us substitute the known values in the above equation, we get

            t = 25 / 9.8

              = 2.55 seconds

Therefore, the time taken is 2.55 seconds.

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The total resistance of the given circuit is if the circuit contains 100ohms,1000 ohms,100 ohms and 10,000 ohms resistors.

Resistance is measured in ohms, and it is represented by the Greek letter omega (Ω). Ohms are named after Georg Simon Ohm (1784-1854), a German physicist who concentrated on the connection between voltage, current and resistance. He is credited for planning Ohm's Regulation.

Resistance estimations are regularly taken to demonstrate the state of a part or a circuit.

Since resistors are connected in series, so we know that when resistors are connected in series, total resistance is given by the formula

Rₙ=R₁+R₂+R₃+---------------Rₙ

So, resistors value are 50 ohms. 100 ohms. 1,000 ohms. 100 ohms 10,000 ohms.

Therefore, total resistance is 50+100+1000+100+10000=10250ohm

Hence, total resistance is 10250ohm

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Answer:

Explanation:

sci notation:  2.99792458 x 10^8

4 sig figs:  2.998 x 10^8

The Focal length (f) exceeds the Object distance (s).

1/v + 1/u = 1/f

As we can see in the fig. the magnitude of the object distance (u) is less than the magnitude of the image distance (v).

Also; u = - u & v = v {distance in the left of the lens is taken -ve.}.

Substituting in eqn (i) :

1/v - 1/u. = 1/f.  ; &  |v.| > |u|

1/v = 1/f + 1/u

Now; In order to be v greatest, 1/v should be smallest.

So, 1/f + 1/u should be smallest  : NOTE : f is a fixed quantity, so value of 1/f can't be changed.

For 1/f + 1/u to be smallest, value of u must be larger.

So the Object distance (s) is larger than the Focal length (f).

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patch (skin, ex: nicotine)-oral meds (stomach, ex: water/electrolytes)-inhalation: snort/smoke (nasal lining ex: nasal spray, cortisone (steroid))-coatings (skin, ex: lotions)-injections (blood vessel linings, ex: insulin shot)-eye drops (conjuncting : eye socket e: anti-biotic )-suppository , ex: nausea med).

Continuous, Line, & Band Absorption Spectrum are the different types of absorption spectrum.

Forensics.For many years, atom absorption spectroscopy has been employed to research forensic sciences.With the aid of this equipment, forensic investigators can analyze blood samples, brain & muscle tissue, or gunshot powder residue in great detail.

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Superior forward visibility compared to radial or V-type engines is a benefit of horizontally opposed engines. For a variety of reasons, including fewer cylinders for equivalent power and smooth operation, opposed engines have today supplanted all previous forms of piston engines.

The American F4U-4 Corsair carrier-based fighter-bomber, created and manufactured by Chance Vought, was the most effective fighter of World War II. More than 12,500 aircraft were produced between 1942 and 1953. The fighter had an extremely lethal arsenal and outstanding mobility.

The requirement to gear the power from the two opposing pistons together was the biggest disadvantage. Compared to traditional piston engines, these extra weight and complexity

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The new angular velocity is 27.7 rpm

From the question, we have

ω = 22 rpm = angular velocity with all children on the edge,

ω' = angular velocity after m2 moved.

From conservation of angular momentum, we have

Mr²ω'/2 + m1r²ω' + m3r²ω' = Mr²ω/2 + m1r²ω + m2r²ω + m3r²ω

ω' = ω(M/2 + m1 + m2 + m3)/(M/2 + m1 + m3)

ω' = 22×(115/2 + 32 + 34 + 40)/(115/2 + 32 + 40)

= 27.7 rpm

The new angular velocity is 27.7 rpm

Complete question:

three children are riding on the edge of a merry-go-round that is 115 kg, has a 1.7-m radius, and is spinning at 24 rpm. the children have masses of 32, 34, and 40 kg. (a) if the children with masses of 34 and 40 kg move to the center of the merry-go-round, what is the new angular velocity in rpm?

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The momentum associated with a photon having an energy equal to the electron rest energy is 0.511 MeV/c. The wavelength is 2.43pm and the frequency of the corresponding radiation is 1.24×10^20Hz

(a) The rest energy of an electron is given by E=mc^2

Thus the momentum of the photon is given as:

p = E/c = mc^2/c = mc where m is mass of electron = 9.11x10-31kg

p = 9.11x10-31x3x10^8 = 2.73x10-21kgm/s = 0.511 MeV/c

(b) the wavelength (λ) = h/p where h is planck's constant = 6.63×10−34Js

λ = 6.63×10−34/2.73x10-21 = 2.43×10−12m = 2.43pm

(c) the frequency of the corresponding radiation f =c/λ

f = 3x10^8/ 2.43×10−12 = 1.24×10^20Hz

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Petroleum has less density than water. So, when fire streams are applied to the burning liquid surface at such an angle that hot and / or burning oil is forced over the edge of the tank, the oil then flows down the side of the tank and you are now confronted with a fire on the ground as well as the one in the tank.

When you spray water on a regular fire, you're attempting to lower the flame's temperature and contain the fire.

Fuel for an oil fire is oil. Temperature and oxidizer are present in a fire (oxygen). Due to the fact that oil is lighter than water, an explosion may result if it floats above water while water sinks beneath oil.

Consequently, water shouldn't be used to put out oil fires.

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between the focus & the centre of curvature of the mirror

Cepheid Variable stars and RR Lyrae stars are the most often used standard candles in astronomy. The absolute magnitude of the star can be calculated from its variable period in both circumstances.

The international candle is used to measure the intensity of a light source. It was initially defined as a one-sixth-pound sperm wax candle burning at 120 grains per second. Astronomers use it today to determine the brightness of objects in the night sky.

A standard candle is a known object that does not need to be measured. A candle is a light source that emits a visible beam of light to the human eye. A standard candle is a type of astronomical objects, such as a supernova or a variable star, that has a recognized luminosity due to some characteristic property of the material it is formed of.

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The points about the stars from the appendix are: Sirius A is the most luminous star within 12 parsecs. It is also the brightest star in our sky, even though it is not the closest. The list of the brightest stars will include the very luminous hot stars from distances greater than 12 light-years, while the list of the fainter yet closer low-mass stars will not.

The list of stars within 12 light-years is volume-limited, which means that almost all of the stars within that distance are listed regardless of luminosity. Such a list is a better representative of the total population of stars and is more plausible to be dominated by low-mass stars. The list of brightest stars includes only those stars that are above a certain apparent brightness threshold.

Therefore, the faintest nearby stars are excluded, but the brightest and rarer hot stars are included in higher proportion than they are in a volume-limited list.

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The number of forces acting on the picture was normal force , gravitational force, weight of the picture, force exerted by the hand.

define gravitational force ?

Have you ever wondered how planets orbit the Sun? Shouldn't the Earth and the Moon merely crash since the Earth draws the Moon and the Moon attracted the Earth? Why isn't the Moon falling? Why does it continue to revolve around the Earth?

Understanding the basics of gravity can provide answers to all of these problems. The gravitational force is the global force of attraction that acts between things. It is one among the universe's basic forces.

normal force , gravitational force, weight of the picture, force exerted by the hand.

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Answer: me personally I think its figure 4

:D

The ball will take 2.551 seconds to reach its peak position.

We must know how long the balls are in the air before we can predict where they will fall. It will take 2 seconds for both balls to touch the ground.

The falling ball travels a distance of d = 12 9.8 (m/s2) t2, with a speed of v = 9.8 (m/s2) t as a function of time. The ball travels 4.9 m in a second. The falling ball's velocity is v = -9.8 (m/s2) t j, and its position is r = (4.9 m - 12 9.8 (m/s2) t2) j as a function of time.

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The small hive beetles, like moths and bees, undergo complete metamorphosis.

The beetles' life cycle starts with eggs, which are laid in the hive and hatch into larvae within 2 to 3 days.

Ten to 16 days later, the larvae crawl from the hive and drop to the ground outside, where they burrow into the soil and pupate.

In about 3 to 4 weeks, they emerge as adult beetles. and re-enter the hive a week later.

This process may repeat itself several times. a year, especially during the warmth months'

An animal's physical development, including birth or hatching, is governed by a biological process called metamorphosis. This process involves a noticeable and rather rapid change in the animal's body structure as a result of cell proliferation and differentiation. Insects, fish, amphibians, mollusks, crustaceans, cnidarians, echinoderms, and tunicates are among the creatures that go through metamorphosis, which is frequently accompanied by a change in diet or behaviour. Animals can be categorised into species that undergo holometaboly (full metamorphosis), hemimetaboly (incomplete metamorphosis), or no metamorphosis ("ametaboly").

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The bullet's flight time with zero air resistance is 0.065s and the bullet speed as soon as it leaves the barrel is 692.3m/s.

To calculate flight time of the bullet we apply the formula [tex]h = \frac{1}{2} gt^{2}[/tex]

Where h = vertical displacement of bullet in meters, 2.1cm to 0.021m

g = is a gravitational constant of 9.8

t = time of flight in seconds

To find t =

[tex]t = \sqrt{\frac{2h}{g} }[/tex]

[tex]t = \sqrt{\frac{2 * 0.021}{9.8} }[/tex] = [tex]t = \sqrt{\frac{0.042}{9.8} }[/tex]

[tex]t = \sqrt{0.004286}[/tex]

t = 0.065s

For speed of bullet:

[tex]v = \frac{s}{t}[/tex]

Where v = velocity

s = horizontal distance/range of target, 45m

t = flight time in seconds, 0.065s

[tex]v = \frac{45}{0.065}[/tex]

v = 692.3m/s

The bullet's flight time on a horizontal target at 45m from the formula [tex]h = \frac{1}{2} gt^{2}[/tex] is 0.065s and using the time of flight to divide the range, the bullet leaves the barrel at a speed of 692.3m/s

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The suitable formula for the relationship between frequency and angular frequency is f=2r. A recurring event's frequency is measured by how many times it occurs in a unit of time.

What pitch does the universe have?

You may connect with the cosmos through this music's 432 Hz frequency and experience the power of the creative source. We use the 432 Hz frequency to help the unconscious become aware of how we shape our world.

What frequency causes harm to people?

The only known negative health consequences of RF field exposures in the frequency range from 3 kHz to 300 GHz relate to the occurrence of tissue heating and nerve stimulation (NS) from brief (acute) exposures, despite the advent of several further research papers on RF fields and health.

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Answer: A.

current (thumb) to magnetic field (fingers)

Answer:

A. current (thumb) to magnetic field (fingers)

Explanation:

According to the Right-Hand Thumb rule, if we are holding a current- carrying straight conductor in our right hand such that the thumb points toward the direction of current, then the fingers will wrap around the conductor in the direction of the field lines of the magnetic field.

Hope it helps.

If you have any query, feel free to ask.

What is the speed of an aircraft traveling at 100 km/h above the ground in relation to the air that has a 6 m/s right-angle crosswind at that same speed?

Speed is described as the rate at which a distance changes over time. It has a distance by time dimension. The basic value of distance with the basic unit of time are combined to form the SI unit of speed. The metric system uses meters per second as the unit of speed.

Distance traveled in a unit of time is referred to as speed. It is the rate of movement of an object. Speed is defined as the amount of time it takes to cover a given distance. m/sec is the speed unit. The magnitude of the velocity vector is a scalar variable called speed.

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When physical pendulum is selected, the plus sign results in an improbable value for d(d=1.5>L). A physically significant result is obtained if we use the minus sign: d=0.056m.

A baseball club swinging back and forward on is an illustration of a physical pendulum. A physical pendulum can undergo simple harmonic motion in exactly the same manner that a simple pendulum can under specific circumstances.

The only physical aspect of a basic pendulum that influences its period has been its length. The object's mass has no bearing on the era. The period of a compound pendulum depends on both the mass of the object and whether that mass is distributed.

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The SI units for position, velocity, and acceleration are, respectively: m, m/s, m/s^2

Position is measured in meters (m). Velocity is measured in meters per second (m/s). Acceleration is measured in meters per second squared (m/s^2).

Velocity:

Velocity is the directional velocity of a moving object as an indicator of the rate of change of position, observed from a certain frame of reference and measured at a certain time reference (eg 60 km/h northward). Velocity is a fundamental concept in kinematics, a branch of classical mechanics that describes the motion of bodies.

Acceleration:

Acceleration is the rate of change of an object's velocity with respect to time. Acceleration is a vector quantity (as long as it has magnitude and direction). The direction of an object's acceleration is given by the direction of the net force acting on that object. The magnitude of the object's acceleration described by Newton's second law.

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The Correct option is A. Patient autonomy and free choice are morally correct Subjective Relativism.

"Subjectivism" insists that the sole source of expertise or authority is inside the belief of the individual. "Subjective relativism," then, as a philosophical position, broadcasts that everyone is his personal authority on ethical lifestyles, and the source of his very own moral standards.

A superficially popular approach to ethics in America today is called "subjective relativism"; as it occurs, it violates each of those commitments, and has the impact (commonly supposed) of creating ethics not possible. To make the commitments clearer, it is able to be profitable examining the errors of this easy dogma.

"Relativism" denotes any technique to ethics that holds that there are no absolute or unchanging ethical principles, but that the regulations that govern every scenario are to be determined by way of their relation to something else: the customs or culture of the u. s ., for example, or the dreams of the contributors. "Subjectivism" insists that the sole source of knowledge or authority is within the notion of the man or woman. '

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The vibration frequency in Hz is 2.7 Hz. This is calculated by taking the inverse of the vibration period (1/0.370 s = 2.7 Hz).

The vibration frequency in radians per second is 17.1 rad/s. This is calculated by taking the vibration frequency in Hz (2.7 Hz) and multiplying it by 2π (2.7 Hz x 2π = 17.1 rad/s).

The wavelength of this vibration is 1.13 m. This is calculated by taking the length of the spring (3.05 m) and dividing it by the harmonic number (3.05 m/2 = 1.13 m).

The product of the frequency, in Hz, and the wavelength is 3.06 Hz-m. This is calculated by taking the frequency in Hz (2.7 Hz) and the wavelength (1.13 m) and multiplying them together (2.7 Hz x 1.13 m = 3.06 Hz-m).

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An 85.0-kg person steps into a car of mass 2400 kg, causing it to sink 2.35 cm on its springs. if started into vertical oscillation, and assuming no damping, 0.60 Hz frequency will the car and passenger vibrate on these springs.

The quantity of waves that pass a set location in a predetermined period of time is known as frequency. As a result, if a wave travels for 1/2 second, the frequency is 2 per second. 100 times per hour is the frequency if it takes 1/100 of an hour.

Given that,

mass (m) = 85 kg

car of mass = 2400 kg

As we know,

m × g = kx

or, 85.0 × 9.8 = k × 2.35 × 10⁻²

or, k = (85.0 × 9.8 ) / (2.35 × 10⁻²)

or, k = 35,447 N/m

frequency (f) = 1 / 2 π [tex]\sqrt{k/m}[/tex]

or, f = [1 / 2π ] [tex]\sqrt{35447/(2400+85)}[/tex]

or, f = 0.60 Hz

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