Modern isotopic counting is done by ___.
A. Microscope
B. Accelerator mass spectrometer
C. Balance
D. Scanning electron microscope

Answer:

See explanation.

Explanation:

To start with, an electric generator uses an A.C circuit power supply which means the current alternates throughout. Firstly, the magnetic field/direction produced by the magnets (N-pole and S-pole) cause the rectangular coil between to turn (you can figure out the direction of the force and current using Fleming's Right Hand Dynamo rule). Alongside, as the coil turns, it cuts through the produced magnetic field by the magnets to induce E.M.F (electromotive force) and then the voltage/current travels to the secondary coil where it is either stepped up or down as needed hence transforming the input voltage.

Answer:

1. Formula = distance/time

D= 112.0 meters, time =4 secs

Speed = d/t =112.0/4

= 28m/s

2.Formula = distance/time

D= 1/4 x 16093.44 m

= 402.35m

Time = 15secs

Speed= d/t

= 402.35/15

=26m/s

The tangential acceleration of the ball is a = √(2a(0.60 m))2 / 1.2 m/s2, or a = 5.77 m/s2, in units of g, this is 0.588 g.

The tangential acceleration of the ball can be calculated using the equation:
a = (v2 - u2) / 2s, where a is the tangential acceleration,

v is the final velocity,

u is the initial velocity,

and s is the displacement.
In this case, since the ball is 0.60 m from her shoulder, the displacement (s) is 0.60 m.

Additionally, since the ball starts from rest, the initial velocity (u) is 0 (u2 = 0).

Since the final velocity is unknown, it can be determined by solving the equation.
Rearranging the equation to isolate the final velocity yields:
v2 = 2as, where a is the tangential acceleration and s is the displacement.
Substituting the values given yields:
v2 = 2(a)(0.60 m), where a is the tangential acceleration.
Solving for the final velocity (v) yields:
v = √(2a(0.60 m))
Therefore, the tangential acceleration of the ball can be calculated by substituting the calculated value of v into the equation a = (v2 - u2) / 2s and solving for a.

This yields:
a = (v2 - 0) / 2(0.60 m)
The tangential acceleration of the ball can thus be calculated as:
a = (√(2a(0.60 m))2 - 0) / 2(0.60 m).

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Answer:

velocity and force

Explanation:

Velocity and force vector diagram represent the force acting on the object.

Diagrams are called vector diagrams to use a vector arrowhead to show the magnitude or direction of a vector quantity. The velocity of an item in motion could be represented in vector diagrams. A vector diagram might be used, for instance, to depict the motion of an automobile traveling down a road.

A force was an influence that will have the power to alter an object's motion.

Therefore, velocity and force vector diagram represent the force acting on the object.

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Answer: 5.5 hours

Explanation: 44/8=5.5.

Answer:

5.5 Hours at 8mph to go 44 miles

Explanation:

d=s/t

t=s/d

44/8 = 5.5  time it took 5.5 hours it will take him to ride 44 miles

We have that for the Questions

a the gravitational potential energy at a relative to B

b. the particle's kinetic energy at B

c the particle's speed at B

d. the potential energy and kinetic energy at C

it can be said that

a)P.E=0.63210Js

b)K.E=0.63210J

c)v=2.420m/s

d)K.E=0.5mv^2

P.E=mgh

From the question we are told

215 g particle is released from rest at point A inside a smooth hemispherical bowl of radius 30.0 cm, as shown at right

a)

Generally the equation for the  gravitational potential energy   is mathematically given as

P.E=mgh

P.E=0.215x9.8 x 0.3

P.E=0.63210J

b)

Generally the equation for the   kinetic energy  is mathematically given as

K.E=0.5mv^2

Where

P.E=K.E at point B

Therefore

K.E=0.63J

c)

Generally the equation for the  speed   is mathematically given as

\(v=\sqrt{\frac{0.63}{0.5m}}\)

v=2.420m/s

d)

The potential energy and kinetic energy at C

Will be given by the equation

K.E=0.5mv^2

P.E=mgh

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A rock with a mass of 550 g in air has an apparent mass of 346 g when submerged in water. To find the mass of water displaced, calculate the difference between the rock's mass in air and its apparent mass in water.

Explanation:
The apparent mass of an object submerged in a fluid is less than its mass in air due to buoyancy. The buoyant force exerted by the water opposes the weight of the object. By Archimedes' principle, the buoyant force is equal to the weight of the water displaced by the object.

The mass of water displaced can be calculated by finding the difference between the rock's mass in air and its apparent mass in water:
Mass of water displaced = Mass of rock in air - Apparent mass of rock in water
= 550 g - 346 g
= 204 g

Therefore, 204 g of water is displaced by the rock when submerged in water.

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The equations for the electric and magnetic fields of an electromagnetic wave in the red part of the visible spectrum with a wavelength of 713 nm and a peak electric field magnitude of 3.6 V/m are: E(x,t) = 3.6 * sin((2π/713) * x - ωt), B(x,t) = B0 * sin((2π/713) * x - ωt).

To write the equations for both the electric and magnetic fields of an electromagnetic wave in the red part of the visible spectrum, we can use the wave equation:
E(x,t) = E0 * sin(kx - ωt)
B(x,t) = B0 * sin(kx - ωt)
In these equations, E(x,t) represents the electric field as a function of position (x) and time (t), and B(x,t) represents the magnetic field. E0 and B0 represent the maximum magnitudes of the electric and magnetic fields, respectively.
To find the values of E0 and B0, we need to relate them to the given information. The wavelength of the red light is 713 nm, which corresponds to a wave number (k) of 2π/λ = 2π/(713 nm). Additionally, the peak electric field magnitude is given as 3.6 V/m.
Using the equation for the wave number, we can find the value of k. Once we have the value of k, we can calculate the angular frequency (ω) using the equation ω = c * k, where c is the speed of light.
Finally, we can substitute the calculated values of k and ω into the wave equations to obtain the equations for the electric and magnetic fields of the electromagnetic wave in the red part of the visible spectrum.
Please note that the equations provided above assume that the wave is propagating in the positive x-direction and that the wave is traveling through a vacuum or free space.
In conclusion, the equations for the electric and magnetic fields of an electromagnetic wave in the red part of the visible spectrum with a wavelength of 713 nm and a peak electric field magnitude of 3.6 V/m are:
E(x,t) = 3.6 * sin((2π/713) * x - ωt)
B(x,t) = B0 * sin((2π/713) * x - ωt)
Remember to use appropriate units for x and t (meters and seconds, respectively) and ensure that the values for k and ω are correctly calculated using the given wavelength and the speed of light.

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Answer:

Explanation:

Acceleration = (final velocity - initial velocity)  / time

Acceleration of W = ( 91 - 60 ) / 5.38 = 5.76 m /s²

Acceleration of X  = ( 68 - 39  ) / 5.38 = 5.39  m /s²

Acceleration of Y = ( 70 - 42 ) / 5.38 = 5.20 m /s²

Acceleration of W = ( 94 - 65 ) / 5.38 = 5.39  m /s²

So Train Y is the smallest acceleration.

Taking into account the definition of density, the volume of the sample of gold is 0.0646998 L.

Density is defined as the property that allows us to measure the amount of mass in a certain volume of a substance.

The expression for the calculation of density is the quotient between the mass of a body and the volume it occupies:

density= mass÷ volume

From this expression it can be deduced that density is inversely proportional to volume: the smaller the volume occupied by a given mass, the higher the density.

In this case, you know that:

Replacing in the definition of density:

19.32 g/cm³= 1250 g÷ volume

Solving:

19.32 g/cm³× volume= 1250 g

volume= 1250 g÷ 19.32 g/cm³

volume= 64.6998 cm³= 0.0646998 L (1 cm³= 0.001 L)

In summary, the volume of the sample of gold is 0.0646998 L.

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The current magnitude out of the source is 194.4 A.

The apparent power of the load,

S = P / PF = 147 kW / 0.79 = 186.08 kVA

After adding the capacitors, the power factor is improved to 1 lagging, which means the reactive power of the load is reduced. The reactive power can be calculated as,

\(Q = S \tan{\cos^{-1}{PF}} - S \tan{\cos^{-1}{1}}\)

= 89.66 kVAR

The total reactive power supplied by the capacitors is,

Qc = 3 × 50/3 kVAR = 50 kVAR

The net reactive power is,

Qnet = Q - Qc = 89.66 - 50 = 39.66 kVAR

The apparent power after adding the capacitors is,

\(S' = \sqrt{P^2 + Q_{net}^2}\)

\(= \sqrt{{147}^2 + (39.66)^2}\)

= 154.9 kVA

The current magnitude out of the source,

\(I = \dfrac{S'}{\sqrt{3} \times Vll}\)

\(= \dfrac{154.9}{\sqrt{3} \times 440}\)

= 194.4 A

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The connection points for chips on the motherboard are known as Sockets, and they are specifically designed to accommodate a variety of types of chips.

The motherboard is the most crucial component of a computer because it acts as the computer's backbone. It connects all of the components and ensures that they work together to produce an output. The CPU, memory, expansion slots, power connectors, and various other components are all located on the motherboard.When it comes to attaching chips to the motherboard, the connection points on the motherboard are known as sockets, which are specifically designed to accommodate a variety of types of chips. These sockets have a grid of holes or pins that allow the chip to be inserted into it and secured. The socket is often utilized to regulate the chip's thermal properties and maintain the chip at the appropriate temperature so that it can operate efficiently. A motherboard, also known as a system board or mainboard, is the primary circuit board in a computer that connects all of the computer's components. The CPU, memory, storage devices, expansion cards, and other components are connected to the motherboard.The motherboard also contains an integrated input/output system called a BIOS, which configures the computer's basic settings, such as the system clock, and performs a system check before booting. There are two major types of motherboards: ATX and BTX.ATX motherboards are the most popular form of motherboard, with a layout that is best for tower cases. BTX motherboards have a flipped layout that moves the CPU and graphics cards towards the front of the case, and the power supply towards the back of the case. The BTX form factor was never fully adopted in the industry, and it is no longer in use.Sockets are the connection points for chips on the motherboard, which are used to transfer data between the chip and the motherboard. A socket is specifically designed to accommodate a variety of types of chips. These sockets have a grid of holes or pins that allow the chip to be inserted into it and secured. The socket is often utilized to regulate the chip's thermal properties and maintain the chip at the appropriate temperature so that it can operate efficiently. The socket type must be matched to the chip type to ensure that it is compatible.

On the motherboard, the connection points for chips are referred to as Sockets. They are specifically designed to accommodate a variety of types of chips. These sockets have a grid of holes or pins that allow the chip to be inserted into it and secured. The socket is often utilized to regulate the chip's thermal properties and maintain the chip at the appropriate temperature so that it can operate efficiently.

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Use function notation to write an equation or expression for each statement the answer will get f(13.5) is 20.

Function f gives the temperature, in degrees celsius, t hours after midnight.Use function notation to write an equation or expression for each statement.

The temperature is provided by the f function in degrees Celsius, t hours after midnight.

Consequently, we shall have f for the temperature at 12:00 AM (exactly midnight) (0).

We will have f at 1:00 AM, one hour after midnight (1).

Additionally, we will have f for 12:00 PM (noon) (12).

The equation for the temperature at 1:30 PM is what we're looking for.

1.5 hours after noon, 1:30 PM is 13.5 hours after midnight.

Consequently, the appropriate sentence would be:

f(13.5)=20.

The complete question is Function f gives the temperature, in degrees Celsius, t hours after midnight. Choose the equation that represents the statement: “At 1:30 p.m., the temperature was 20 degrees Celsius.” Group of answer choices f (1:30) = 20 f (1.5) = 20 f (13:30) = 20 f (13.5) = 20

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Answer:

the change in speed of the sled after 3.0 s is 60 m/s.

Explanation:

Given;

constant acceleration of the sled, a = 20 m/s²

change in time of motion, dt = 3.0 s

The change in speed of the sled after 3.0 s is calculated as;

\(a = \frac{dv}{dt} \\\\dv = a \times dt\\\\dv = 20 \ \times \ 3\\\\dv = 60 \ m/s\)

Therefore, the change in speed of the sled after 3.0 s is 60 m/s.

The speed of the sled change in 3.00 seconds is 60m/s.

Given that,

Based on the above information, the calculation is as follows:

\(= 20 \times 3\)

= 60 m/s

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Answer:

Gravity

Explanation:

Gravity, also called gravitation, in mechanics, the universal force of attraction acting between all

Answer:

The temperature  change in the calorimeter will be lower

Explanation:

Water is an example of a molecular substance. They have relatively low melting points and boiling points usually below 300° C . Water reacts with metals to a degree varying with their position in the electrochemical series.

The specific heat of water is 4179.6 Joules which is relatively high . This typically implies that water absorbs a larger amount of heat but the increase in temperature of its boiling points is relatively low. Thus; in the 200-mm test tube that contains water and was subsequently added to the calorimeter , the heat present was initially absorbed by the water and that does not result to an increase in the temperature change in the calorimeter. Thus the temperature change in the calorimeter will be lower.

Answer:

It is cold at saturn and far away

Explanation:

The Nernst Equilibrium Potential is the potential energy (in mV) when an ion is in electrical equilibrium. The correct option is C.

The Nernst equilibrium potential is a theoretical membrane potential at which the electrical gradient of an ion is precisely counterbalanced by the opposing chemical gradient. For the ion, this means that there is no net flux of the ion through the membrane, and it is at equilibrium.

As a result, this concept defines the voltage at which ion movement would be equal if there were no other forces opposing the movement. For a single ion, the Nernst equilibrium potential may be computed utilizing the following formula:

E ion = (RT/zF) * ln([ion]outside/[ion]inside)

where E ion  represents the Nernst equilibrium potential for an ion, R is the gas constant, T is temperature (in Kelvin), z is the charge of the ion, F is Faraday's constant, and [ion]outside/[ion]inside represents the ion concentration ratio outside/inside the cell.

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Answer:

v = 27 m/s

Explanation:

To find the speed of cars after the collision  you take into account the momentum conservation law. Total momentum of both cars before the collision must be equal to the total momentum of both cars after the collision.

After the collision both cars traveled together, then you have:

\(m_1v_1+m_2v_2=(m_1+m_2)v\)   (1)

m1: mass of the Toyota = 3-ton = 3000 kg

m2: mass of the taxi = 2-ton = 2000kg

v1: speed of the Toyota before the collision = 45m/s

v2: speed of the car before the collision = 0 m/s (it is  at rest)

v: speed of both cars after the collision = ?

You solve the equation (1) for v:

\(v=\frac{m_1v_1+m_2v_2}{m_1+m_2}\)

Next, you replace the values of the rest of the variables:

\(v=\frac{(3000kg)(45m/s)+0kgm/s}{3000kg+2000kg}=27\frac{m}{s}\)

hence, just after the collision both cars have a speed of 27m/s

Answer:

The cliff is 12.632 meter high.

Explanation:

Each stone experiments a free fall motion, that is, an uniformly accelerated motion due to gravity. We construct the respective equations of motion for each stone:

First stone

\(y_{1} = y_{o,1} +v_{o,1}\cdot t +\frac{1}{2}\cdot g\cdot t^{2}\) (1)

Second stone

\(y_{2} = y_{o,2} +v_{o,2}\cdot (t-2) +\frac{1}{2}\cdot g\cdot (t-2)^{2}\) (2)

Where:

\(y_{1}\), \(y_{2}\) - Final height of the first and second stone, in meters.

\(y_{o,1}\), \(y_{o,2}\) - Initial height of the first and second stone, in meters.

\(v_{o,1}\), \(v_{o,2}\) - Initial speed of the first and second stone, in meters per second.

\(t\) - Time, in seconds.

\(g\) - Gravitational acceleration, in meters per square second.

If we know that \(y_{o,1} = y_{o,2}\), \(y_{1} = y_{2} = 0\,m\), \(v_{o,1} = 0\,\frac{m}{s}\), \(v_{o,2} = -30\,\frac{m}{s}\) and \(g = -9.807\,\frac{m}{s^{2}}\), then we find that time when both stones hit the ground simultaneously is:

\(4.904\cdot t^{2} = -30\cdot (t-2)+4.904\cdot (t-2)^{2}\)

\(4.904\cdot t^{2} = -30\cdot t + 60 +4.904\cdot (t^{2}-4\cdot t +4)\)

\(-30\cdot t +60 -19.616\cdot t +19.616 = 0\)

\(49.616\cdot t = 79.616\)

\(t = 1.605\,s\)

The height of the cliff is:

\(y_{1} = y_{o,1} +v_{o,1}\cdot t +\frac{1}{2}\cdot g\cdot t^{2}\)

\(y_{o,1} = 12.632\,m\)

The cliff is 12.632 meter high.

Answer:

To calculate anything - speed, acceleration, all that - we need data. The more data we have, and the more accurate that data is, the more accurate our calculations will be. To collect that data, we need to measure it somehow. To measure anything, we need tools and a method. Speed is a measure of distance over time, so we'll need tools for measuring time and distance, and a method for measuring each.

Conveniently, the lamp posts in this problem are equally spaced, and we can treat that spacing as our measuring stick. To measure speed, we'll need to bring time in somehow too, and that's where the stopwatch comes in. A good method might go like this:

Of course, you'll never find an *exact* amount, but the more data points you have, the better your approximation will become.

The factor that will directly affect the magnetic force produced by an electromagnetic is (option A) Number of turns in the wire, amount of current.

When a current goes through a wire, it creates a magnetic field around that wire. The strength of the magnetic field is determined by the amount of current that flows through the wire and the number of turns in the wire.

The more turns  in the wire and  how high the current  will determine how strong the magnetic field produce by the Electromagnets will be.

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Answer: 0.25 m/s

Explanation:  Speed = wavelengt · frequency  

v = λf   and frequency is 1/period  f = 1/T

Then v = λ/T = 5 m / 20 s = 0.25 m/s

The  the capacitance of the cable is 18 nF, when the resulting potential difference between the two conductors is 420 V.

The capacitance of a cable is 125 nF when the resulting potential difference between the two conductors is 60 V. If the resulting potential difference between the two conductors is 420 V, what is the capacitance, in nanofarads, of the cable

Given:

Capacitance, C = 125 nF

Initial potential difference, V1 = 60 V

Final potential difference, V2 = 420 V

To find:

The capacitance of the cable is given by the formula:

Capacitance, C = (Charge, Q) / (Potential difference, V)

Or,

Charge, Q = C × V

We know that,

Charge, Q1 = C × V1

Charge, Q2 = C × V2

If we divide Q2 by Q1, then we get:

C × V2 / C × V1

= Q2 / Q1

Or,

C × V2 / C × V1 = (Final charge) / (Initial charge)

From the principle of conservation of charge, we know that:

Charge cannot be created or destroyed; it can only be transferred from one place to another.

Therefore, the initial charge and final charge are the same.

So, we can say that:

Charge, Q2 = Charge, Q1

Hence, C × V2 = C × V1

Or,

C = V1 / V2 × C1

Substituting the values, we get:

C = 60 V / 420 V × 125nF

= 18 nF (approximately)

Therefore, the capacitance of the cable is 18 nF, when the resulting potential difference between the two conductors is 420 V.

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Answer:

2as = v² - u²

v = √(2as + u²)

v = √(2 x 4 x 400 + 13²)

v = 58 m/s

Explanation:

Answer:

58

Explanation:

correct

When air (ideal gas) moves from a region of high pressure to a region of low pressure, with no addition or subtraction of heat, it expands.

Isothermal expansion of an ideal gas involves increase in the gas volume at constant temperature. The volume of the gas increases while its pressure decreases.

When air moves from a region of high pressure to a region of low pressure, it is no longer adiabatic (constant pressure).

Thus, when air (ideal gas) moves from a region of high pressure to a region of low pressure, with no addition or subtraction of heat, it expands.

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When air moves from an area of high pressure to an area of low pressure, it follows a curved path due to the Earth's rotation and the Coriolis effect. The Coriolis effect causes air to be deflected to the right in the Northern Hemisphere and to the left in the Southern Hemisphere. This means that the path of air moving from high to low pressure will be curved as it follows the direction of the prevailing winds. However, the exact path that air takes can be influenced by other factors such as local topography, temperature gradients, and the presence of weather systems.

The Coriolis effect is the force on the earth's rotation that deflects the direction of ocean currents. The current deflection to the right occurs at the north pole while the current deflection to the left occurs at the south pole.

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The television commercial loudness increases by 10 decibels.

The decibel (dB) scale is a logarithmic measure of sound intensity. The intensity of a sound is measured in watts per square meter and the decibel scale is a way to express the relative loudness of a sound, compared to a reference level.

A 10 dB increase in intensity is a 10-fold increase in sound power. This means that a sound with an intensity of 10 watts per square meter is 10 times louder than a sound with an intensity of 1 watt per square meter.

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The variations get passed on from one generation of tree snails to the next from both parents to offspring and through the environment (Option C is correct).

The expression of genetic variation refers to differences in the nucleotide sequences between individuals of the same special which are passed across generations from parents to offspring and are selected by natural selection.

In conclusion, the variations get passed on from one generation of tree snails to the next from both parents to offspring and through the environment (Option C is correct).

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