Which one of the following statements is the best explanation as to why nuclear fusion is not at present used to generate electric power?
a. Fusion resulted in an infamous catastrophic experiment in Seattle which scared away investors
b. Fusion requires antimatter which cannot be found naturally on Earth
c. Fusion processes has resulted in nuclear explosions such as the one which destroyed Chernobyl
d. Fusion presents technical challenges which haven’t yet been overcome such as containing and controlling high temperature plasmas
e. All of the above are false, Dr. Octavius was awarded the Nobel prize for the use of nuclear fusion to generate electricity

Answer:

2as=v2-u2

2000=v2

V=44

V=u+at

44/10=t

T=4.4seconds

Explanation:

Answer:

2)  C.  (x - 3)² + (y + 2)² = 25

5)   x² +  y² - 8x - 16y + 54 = 0

6)   x² + y²  - 10x - 12y + 36  = 0

Explanation:

2)

center of circle = 3, -2

                            x1, y1

end point of circle = 7, 1

                                 x2, y2

the equation of a circle is Pythagorean theorem

x² + y² = r²    (where r is the radius of a circle)

distance between points  

(x2 - x1)² + (y2 - y1)² = r²

(7 - 3)² + (1 - (-2))² = r²

r² = 25

therefore the equation to the circle is

(x - 3)² + (y + 2)² = 25

=========================================

5)

write the general form of a circle with the center (4,8)

and containing the point (-1, 7)

distance between points  

(x2 - x1)² + (y2 - y1)² = r²

(-1 - 4)² + (7 - 8)² = r²

r² = 26

(x - 4)² + (y - 8)² = 26

(x - 4)(x - 4) +  (y - 8)(y - 8) = 26

x² - 8x + 16 + y² - 16y + 64 -26 = 0

x² +  y² - 8x - 16y + 54 = 0

=========================================

6)

find the general form of a circle with center (5,6)

and tangent to the y-axis.

center (5,6)

           h, k

radius = r²

r = 5

(x - h)² + (y - k)² = r²

(x - r)² + (y - k)² = r²

(x - 5)(x - 5) + (y - 6)(y - 6) = r²

x² - 10x + 25 + y² - 12y + 36 = 25

x² + y²  - 10x - 12y + 36  = 0

=========================================

Answer:

90 mAmps

Explanation:

V=IR

V/R = I

9 v / 100 ohm = .09 amps = 90 mAmps

Answer:

Solubility

Explanation:

Solubility involves dissolving a substance

Here's the Answer :

=》A) It will move towards the weaker force.

because, the stronger force will overcome the weaker one and hence make the object move towards the other side.

Answer:

Sunlight, gravitational potential, decay of radioactive isotopes, and rotation of the Earth are the major sources of energy driving physical processes on Earth. Sunlight is a source external to Earth, while radioactive isotopes and gravitational potential, with the exception of tidal energy, are internal.

Typically, the "refracted angle" is used to refer to the "angle of deviation."

Snell's Law is simply applied in this case.

Since n1sin1 = n2sin2,

The incidence angle is 1

The refracted angle is 2

The appropriate indices of refraction are n1 and n2.

the standard value for air, n1, is 1.

n2 = 1.5

As a result, the refractive indices of the two media may be related through the angle associated with incidence and refraction. The incident ray, the refracted ray, and the normal ray are all said to be on the same plane.

Snell's Law is particularly significant for optical technologies like fibre optics. According to Snell's Law, the refractive indices of the materials at the contact are proportional to the ratio of the sine of the angles of incidence and transmission.

The extension is obeyed by the e-ray Because the refractive index of an e-ray changes with the angle between the wave vector and optical axis, Snell's law applies. It is important to consider e-ray propagation in the uniaxial crystal.

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Answer:

A new product is formed

Explanation:

Physical reactions generally result in a change of state (solid, liquid, gas). Chemical reactions generally result in the production of a new product/ substance (structure/ properties are different than the intial reactants'... example= burning wood)

The system described by the transfer function G(s) = -co² s² + 2a + w², with a damping ratio of 1.3 and a natural frequency of 0.5, has an overdamped unit step response. So, the correct option is (E)

The transfer function of the system is given as G(s) = -co² s² + 2a + w², where co represents the damping ratio, a represents an arbitrary constant, and w represents the natural frequency of the system. We are given that the natural frequency is 0.5 and the damping ratio is 1.3.

To determine the type of unit step response, we need to analyze the damping ratio (co) in relation to the critical damping value (co_critical).

The critical damping ratio (co_critical) is defined as the value where the system is on the threshold between being overdamped and underdamped. It is given by the formula co_critical = 2 * sqrt(a * w²).

In our case, the natural frequency (w) is 0.5, so we can calculate co_critical as follows: co_critical = 2 * sqrt(a * 0.5²).

Since the damping ratio (co) is given as 1.3, we can compare it with co_critical to determine the type of unit step response.

If co > co_critical, the system is considered overdamped (Option E).

If co = co_critical, the system is considered critically damped (Option D).

If co < co_critical, the system is considered underdamped (Option C).

Based on the given values, we can determine that the system is overdamped (Option E) because the damping ratio (1.3) is greater than the critical damping ratio.

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Answer:

a = 10.638m/s^2 in a vertical direction, up 90 degrees from the x axis

Explanation:

Givens:

F_t = 12500N

w = 1175kg

g = -9.81m/s^2

F = m(a)

F_w = m(g)

So taking the weight of the elevator and multiplying it with gravity we get:

F_w = 1175(-9.81)

F_w = -11526.75N

So since the weight of the elevator and the acceleration of gravity would result in 11526.75N of force down the cable would have the opposite force pulling up 11526.75N but it doesn't it has more force then that so the elevator is producing enough force to defeat gravity and move upwards. So now we take our total force and subtract the force of the weight on the cable.

12500N-11526N = 973.25N

So the elevator after defeating gravity is still producing 973.25N of force upwards. So now we take the equation for force and rearrange it:

F = m(a)

a = F/m

a = 0.828m/s^2

But this is in addition to countering the gravity so add 9.81m/s^2 to this and you get

a = 10.638m/s^2 in a vertical direction, up 90 degrees from the x axis

The canoe's velocity after traveling 32 m is 9.4 m/s.

To find the velocity, we can use the formula:

v = u + at,

where v is the final velocity, u is the initial velocity (assumed to be zero as the canoe starts from rest), a is the acceleration, and t is the time.

In this case, the initial velocity u is 0 m/s, the acceleration a is 0.45 m/s², and the distance traveled d is 32 m. We need to find the final velocity v.

We can rearrange the formula as:

v = √(u² + 2ad).

Since u = 0, the formula simplifies to:

v = √(2ad).

Plugging in the values, we get:

v = √(2 × 0.45 m/s² × 32 m) ≈ 9.4 m/s.

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Answer:

a c d

Explanation:

yeet

Answer:

a c d

Explanation:

Answer:

Fastest: Norco

Slowest: Mt luna

Answer:

Two moles of aluminum chloride \((AlCl_3)\) are produced when six miles of hydrogen Chloride \((HCl)\) react with plenty of aluminum

Explanation:

6 Moles of \(HCl\) will only react with 2 moles of \(Al\) irrespective of the number of moles of each compound present. The reaction wiil take place in this ratio only. The products produced will be 2 moles of \(AlCl_3\) and 3 moles of \(H_2\) this ratio will also be constant.

So, six moles of hydrogen chloride \((HCl)\) will react with plenty of aluminum to produce many 2 moles of aluminum chloride \((AlCl_3)\).

The temperature of the air is approximately 20.65°C.

v = 331.3 m/s * sqrt(T/273.15 K)

Using the formula for the speed of sound, we can calculate the temperature of the air:

v = f * λ

where f is the frequency and λ is the wavelength.

Substituting the given values, we get:

v = 781 Hz * 0.45 m = 351.45 m/s

351.45 m/s = 331.3 m/s * sqrt(T/273.15 K)

Squaring both sides and rearranging, we get:

T = (351.45^2 / 331.3^2) * 273.15 K = 293.8 K

Converting from Kelvin to Celsius, we get:

T = 293.8 K - 273.15 K = 20.65°C

In physics, wavelength is a term that refers to the distance between two consecutive points in a wave that is in phase with each other. It is usually denoted by the Greek letter lambda (λ). The wavelength of a wave is typically measured from crest to crest or from trough to trough.

Wavelength is an important concept in physics as it is related to the energy and frequency of a wave. In fact, the wavelength of a wave and its frequency are inversely proportional to each other, meaning that as the frequency of a wave increases, its wavelength decreases, and vice versa. This relationship is described by the equation λ = c/f, where c is the speed of light and f is the frequency of the wave.

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Answer:

5 Games

Explanation:

The score begins with 0-0 with the server being the first one to serve. This goes in a motion, both players taking turns, serving two points in a row.

The given problem involves calculating the force on an airplane that has acquired a net charge and is moving with a certain velocity in the presence of the Earth's magnetic field.

Specifically, we are asked to determine the force on the airplane, given its net charge, velocity, and the magnitude and direction of the Earth's magnetic field.To calculate the force on the airplane, we need to use the formula for the Lorentz force, which describes the force on a charged particle moving in a magnetic field. The formula for the Lorentz force is:F = q(v x B)where F is the force, q is the charge of the particle, v is its velocity, and B is the magnetic field.

Using the given values for the net charge of the airplane, its velocity, and the magnitude and direction of the Earth's magnetic field, we can calculate the force on the airplane.The final answer is a vector quantity, which represents the direction and magnitude of the force on the airplane.Overall, the problem involves applying the principles of electromagnetism and the formula for the Lorentz force to determine the force on a charged particle moving in a magnetic field. It also requires an understanding of the direction and magnitude of the magnetic field and the velocity of the charged particle.

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From your frame of reference, the speed of your friend if your friend is walking at 1 mile an hour down the aisle toward the front is 16 miles/hour.

In dynamics, a reference frame—also known as a frame of reference—is a set of graded lines that are symbolically tied to a body and used to define the location of points in relation to it. For instance, degrees of latitude, measured north and south from the Equator, and degrees of longitude, measured east and west from the great circle passing through Greenwich, England, and the poles, can be used to characterise a point's position on the surface of the Earth.

Newton's laws of motion, strictly speaking, only apply to coordinate systems that are at rest with regard to the "fixed" stars. A Newtonian, or inertial reference frame, is a system like this. The Newtonian or Galilean relativity principle states that the laws hold true for any arrangement of rigid axes travelling with constant speed and without rotation with respect to an inertial frame.

Because the Earth spins and accelerates with regard to the Sun, a coordinate system tied to the planet is not an inertial reference frame. There are some situations where it isn't necessary to assume that an Earth-based reference frame is an inertial one in order to arrive at suitable solutions to engineering challenges.

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Answer:

b. compensate for changes in the Earth's atmosphere and achieve better resolution.

Explanation:

Answer:

300,000,000

Explanation:

Use the speed formula

Speed= wavelength x frequency

Answer:

hey from what I know the answer is C

Explanation:

When a book is kept on a table , weight (gravitational force) of book acts on table vertically downwards and as a reaction of weight , table also exerts an equal and opposite ( upward) force on book .

The distance traveled by the box before stopping, when the student slides the box across the floor  to his friend, at the given coefficient of kinetic friction is 4.8 m.

The acceleration of the box across the floor is determined by applying Newton's second law of motion.

∑F = ma

-Ff = ma

-μmg = ma

-μg = a

-(0.52 x 9.8) = a

- 5.1 m/s² = a

The distance traveled by the box before it stops is calculated  as follows;

v² = u² + 2as

where;

0 = (7)² + 2(-5.1)s

0 = 49 - 10.2s

10.2s = 49

s = 49/10.2

s = 4.8 m

Thus, the distance traveled by the box before it stops is 4.8 m.

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The force formula is defined by Newton's second law of motion: The force exerted by an object is equal to its mass x acceleration: F = m ⨉ a.

Using this formula, must use SI units. Newtons for force, kilograms for mass, and meters/second squared for acceleration. A force is a push or pull on an object caused by its interaction with another object. Whenever there is an interaction between two objects, there is a force acting on each object. When the interaction stops, the two objects no longer receive forces. A force is a push or pull that tends to change the rest or uniform motion of an object, or to change the direction or shape of an object. This will accelerate the object. The SI unit is Newton.

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Answer:

draw fuel from the tank and supply pressurized fuel to the engine.

Answer:

9

Explanation:

You divide the joules by the coulombs to find the voltage of the battery so, 27/3= 9

In thermodynamics, heat and work are two ways in which energy can be transferred into or out of a system. The sign convention for heat and work is crucial in thermodynamics calculations.

When supplied to the system, heat is represented by the letter Q, which has a positive sign, and when released, a negative sign.

W stands for work, and it has a positive sign when the system performs work on the environment, and a negative sign when the environment performs work on the system.

Expansion work is the effort put forth by a system when it expands under a continuous external pressure.

A system's work when it grows is beneficial because energy is transmitted from the system to the surrounds and the system is working on its surroundings.

Contrarily, when the system is compressed, the environment works on it and energy is transferred from the environment to the system.

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Answer:

a-

50°C whn converted into K - 323 K

Disadvantage of nuclear power is . Nuclear power produces radioactive waste and creates a potential for disaster. This is nuclear pollution .

The generation of radioactive wastes such spent (used) reactor fuel, uranium mill tailings, and other radioactive wastes is a significant environmental hazard associated with nuclear power. Over millions of years, these substances may continue to be radioactive and hazardous to human health.

Low-enriched uranium fuel is used in nuclear power plants to generate electricity through a process known as fission, which is the splitting of uranium atoms in a nuclear reactor. Small, dense ceramic pellets used as uranium fuel are stored in protracted, vertical tubes. Bundles of this fuel are put within the reactor in bundles.

Smaller than a pencil eraser in size, a single uranium pellet has the same amount of energy in it as a ton of coal, three barrels of oil, or 17,000 cubic feet of natural gas. A single pellet of uranium fuel can generate heat for electricity production for up to five years. Yet since uranium is one of the most plentiful metals in the world, it can continue to fuel commercial nuclear power plants for many years to come.

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Answer:

C

Explanation:

Edge 2023

Answer:

Roughly 25 meters

Explanation:

Use the formula D=1/2*a*t^2 where d=distance, a=acceleration, and t=time

Plug in all the variables we know...

D=1/2*a*12^2

in order to solve for acceleration, we use the formula  F=ma where F=force, m=mass, and a=acceleration.

Plug in known variables,

342N=989kg*a

solve for a and we get...

342N/989kg=a

Now that we know the acceleration, we can plug that into our original equation and solve for distance.

D=1/2*342N/989kg*12s^2

Simplify,

D=72s^2*342N/989kg

D=72s^2*342kgm/s^2/989kg

D=72s^2*342m/s^2/989

D=72*342m/989

D=24624/989 meters, or 24.898meters which rounds up to 25.

Answer:

Explanation:

The force acting on an object given it's mass and acceleration can be found by using the formula

force = mass × acceleration

From the question

mass = 0.2 kg

acceleration = 600 m/s²

We have

force = 0.2 × 600 = 120

We have the final answer as

Hope this helps you