I need help with this ASAP.. it was due today

The correct option is type ii supernovae.

Neutron stars and black holes are formed by type II supernovae.

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Photons per second, n, would enter an aperture of area a = 5cm2 located a distance d = 4 m from the light bulb, N = 6.4886 *10¹²

A particle representing a quantum of light or other electromagnetic radiation. A photon carries energy proportional to radiation frequency but has a zero rest mass.

A photon is a particle of light defined as a discrete bundle (or quantum) of the electromagnetic (or light) energy. Photons are always in the motion and, in a vacuum (a completely empty space), have a constant speed of light to all observers.

Assumption:

2.5% of electrical energy is converted into the light.

Power = 100W

So, to calculate energy of light per second, we simply multiply 100 to 2.5%

E = 100 * (2.5/100) = 2.5J

To calculate number of photons, we have the formula

N = (2.5 * λ)/h c

Now, using distance of 5m, we find area of the sphere using formula 4λR²

A=4*3.14*4² = 314m²

Now, to determine the number of photons passing through area of 3cm² or 0.0003m²

N = (5*10⁻⁴/314)*[(2.5*λ)/h c ]

Now by putting values we get,

N = (5*10⁻⁴/314)*[(2.5*540*10⁻⁹)/((6.626*10⁻³⁴J.s)(5*10⁸))]

N = 6.4886 *10¹²

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Acceleration of motorcycle is 4.44 km/sec².

Given that ,

Starting velocity = 10 km/hr

Final velocity = 50 km/hr

Time taken = 9 second

Acceleration of motorcycle = [Final velocity - Initial velocity]  / Time taken

Acceleration of motorcycle = [50 - 10] / 9

Acceleration of motorcycle = [40] / 9

Acceleration of motorcycle = 4.44 km/sec².

In the graph above, how does the acceleration at A compare with the acceleration at B?

a. The acceleration at A is positive and less than the acceleration at B.

b. The acceleration at B is positive and less than the acceleration at A.

c. The accelerations at A and B are each zero.

d. The accelerations at A and B cannot be determined.

Option C would be the response to the afore mentioned inquiry. According to the graph, there are no accelerations at A or B.

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Let g be a group An element of G is called Idempotent if g² = g.

(1)Show that every group has atleast one idempotent element.

Proof: Let G be a group and we know that every group has identity element let e G be a identity element

since e²=e

this shows that e is the idempotent element in G

Hence every group has atleast one idempotent element which is the identity element.

(2) Shows that group has at exactly one idempotent element.

Proof: Let G be a group Now by Part 1 we see that every group has e is the idempotent element.

Now let g∈G be idempotent element other than identity element.

since g is Idempotent.

g²=g

g.g=g

g.g=g.e   i.e. (g.e=g)

By left cancellation law we get

g = e

Thus e is the only Idempotent element is G.

hence Every group has at exactly Idempotent Element.

Any of more than 100 chemicals that cannot be divided into various substances using common chemical methods Elements include gold and carbon. There is a risk component to surfing  one of the constituent pieces of something.  The fundamentals of arithmetic, which are a subject of study.

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The coefficient of kinetic friction is 0.255.

The ratio of the friction force to the normal force felt by a body moving on a dry, uneven surface is known as the kinetic friction coefficient (k).

Wb = Mg = 12 X 9.8 = 117.6 N. = Normal

force, Fn.

Fx-Ff = Ma.

Since the velocity is constant, the acceleration is zero.

Fx-Ff = MX0 = 0.

Ff = Fx = 30 N.

Ff = uXFn.

u = Ff/Fn = 30/117.6 = 0.255.

The coefficient of kinetic friction is 0.255

Kinetic friction is a force that exists between moving surfaces. A body moving on the surface feels a force in the reverse direction of its movement. The magnitude of the force is determined by the kinetic friction coefficient of the two materials.

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Sunlight is the energy source for the light reactions.

The energy sources for the carbon reactions are  NADPH and ATP.

Energy - The ability to do work.

ATP - Adenosine triphosphate

NADPH - Nicotinamide adenine dinucleotide phosphate.

ATP and NADHP are used to fix the carbondioxide (CO₂)

They are produced  during the light reaction of photosynthesis.  

Overall purpose of the reaction is to convert  solar energy to chemical energy.

The energy sources for the carbon reactions are  NADPH and ATP.

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An artwork from The Book of Fixed Stars is seen in the figure.

A man is depicted in the drawing holding a sickle with his left hand and extending his right arm forth. The person is hunched over on his left knee, and above him is inscribed in Arabic calligraphy. There are dots all throughout the artwork with Arabic text that identify specific stars and their brightness as observed by Muslim astronomers.

The monarch of the Turkic Timurid dynasty, which ruled over a large portion of Central Asia in the fifteenth century, received this copy of The Book of Fixed Stars. Individual stars are represented by the dots spread throughout the picture, and the symbols next to the dots denote the stars' varying luminosities,  as observed by Muslim astronomers.

The greatest evidence that intellectual activities in the Muslim world persisted in the era between 1200 and 1450, despite the dissolution of the Abbasid Caliphate, is the sponsorship of scholarship by Turkic dynasties, such as the Timurids.

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Molecular formula = (C11 N3 H17 O8)1

M(tetrodotoxin) = 6*10^23 x 1.59 x 10^-21 g/3 molecules = 318g/mol

mass of Emperical formula =

11*12.011 + 3*14.007 + 17*1.008 + 8*15.999 = 318g/mol

Molecular formula = (Emperical formula)x

Simple numbers for each sort of atom in a molecule of a molecular substance are shown in molecular formulas. They are equivalent to empirical equations for compounds with more than one type of atom but only one of that type overall.

where x is equal to = molar mass/mass of Emperical formula

x = 318/318 = 1

Molecular formula = (C11 N3 H17 O8)1

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Under ground fault conditions, an effective ground path will carry current from the point of a ground fault to electrical supply source

The effective ground path is a low impedance electrically conductive path constructed intentionally to carry current under ground fault conditions. It helps remove dangerous voltage from a ground fault and facilitates overcurrent protective device operation.

Ground fault is a type of short-circuit in which the electricity takes an unplanned path to the ground. It is caused by wrong wiring or damaged insulation / appliance.

Therefore, under ground fault conditions, an effective ground path will carry current from the point of a ground fault to electrical supply source

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Work input is required in each cycle w = 208j

Here can explain as ,according to the law of conservation of energy , the total heat given off the surrounding by a refrigerator is equal to the work done by the refrigerator and the heat removed from the inside of a refrigerator .i.e. the addition of heat removed or absorbs and work done by the refrigerator is equal to the heat expelled to the room during each cycle. It can be shown as ,

[tex]Q_{h}[/tex] =[tex]Q_{c}[/tex] + [tex]W[/tex]

Where,

 [tex]W[/tex] is work input of refrigerator during each cycle.

[tex]Q_{c}[/tex] is the heat removed or absorbed by the refrigerator.

[tex]Q_{h}[/tex] is heat expelled to the room during each cycle.

Given here,

[tex]Q_{c}[/tex] =  257 j

[tex]Q_{h}[/tex] =  465 j

Therefore from above equation can be find the value of work input by the refrigerator in each cycle,

[tex]W[/tex] =[tex]Q_{h}[/tex] - [tex]Q_{c}[/tex]

w = (465 j) -(257 j)

w= 208j

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By ideal gas theory, cylinder b has the higher temperature.

We need to know about the ideal gas theory to solve this problem. The ideal gas can be represented by

P . V = n . R . T

where P is the pressure, V is volume, n is the number of molecules, R is the ideal gas constant and T is temperature.

From the question above, we know that

Pa = Pb = P

na = 3nb

Find the temperature of the cylinder a

P . V = n . R . Ta

Ta = P . V /( na . R )

Substitute na

Ta = P . V /( (3nb) . R )

Ta = (1/3) x (P . V /( (nb . R ))

Find the temperature of the cylinder b

P . V = n . R . Tb

Tb = P . V /( nb . R )

The cylinder a temperature is 3 times smaller than the temperature in cylinder b.

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Answer:c

Explanation: the law of conservation of mass states that mass can niether be created nor destroyed and if there is a plug the steam has to go somewhere

Answer:

C. The steam will fill up the container it is in because gas does not have a definite size.

Explanation:

A particular automobile with an initial speed of 65 km/h will come to 120 km/h in 8.49 s

The formula for Uniformly varied rectilinear motion (UVRM) and procedure we will use to solve this exercise is:

t = (vf - vi) /a

Where:

Information about the problem:

By converting the velocity from km/h to m/s, we get:

65 km/h * (1000 m / 1 km) * (1 h / 3600 s) = 18.056 m/s

120 km/h * (1000 m / 1 km) * (1 h / 3600 s) = 33.33 m/s

Applying the time formula, we have:

t = (vf - vi) /a

t = (33.33 m/s - 18.056 m/s) / 1.8 m/s2

t = 15.274 m/s /  1.8 m/s2

t =  8.49 s

It is a physical quantity that indicates the variation of velocity as a function of time, it is expressed in units of distance per time squared e.g.: m/sec2 ; km/h2

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The ball to reach its highest point at time t =4.0816 sec

Given ,

A ball throw in upward from the ground ,its Initial velocity u = 40 m/s

The time taken by the ball to reach at its highest point t= ?

Solution,

 Therefore from equation of motion ,

v = u + gt

where,

v = final velocity

u = initial velocity

g = acceleration due to gravity

t = time

Here final velocity of ball is (0).& taking (g) is negative due to upward direction ,then calculated value of ( t )is given as,

(0) = 40 m/s- (9.8m/s²) t

(t) = 40/9.8 sec

(t) =4.0816 sec

Hence, the ball to reach its highest point at time t  is 4.0816 sec

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Answer:

Explanation:

0 m/s^2 is the answer

Answer:

Zero

Explanation:

Constant speed involves zero acceleration  ( which is a change in speed)

It is a false statement i.e. drift velocity is not same in the direction as the applied force.

Drift velocity of a  current-carrying conductor can be explained as, the charges i.e. electrons do not  flow in the same direction of current. In other word, in most cases the movement of the electrons is almost random, with a small net velocity. So that , the drift velocity, in the direction opposite to the electric field.

Drift velocity [tex]v_{d}[/tex] is inversely proportional to the number of electron per unit volume of the conductor e. Therefore, the formulation can be given as ,

[tex]v_{d}[/tex] = σ E/ne

The above equation shows the drift velocity in a current carrying conductor  

where, [tex]v_{d}[/tex] is drift velocity , σ is the conductivity, E is electric force and n is number of electrons per unit volume of the conductor e.

Hence here we can say that, the drift velocity is not in the same direction as the applied force.

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Yes. hence the change in velocity is acceleration. There won't be a change in velocity if there is no velocity.

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Answer: Newton's law of universal gravitation is usually stated as that every particle attracts every other particle in the universe with a force that is directly proportional to the product of their masses and inversely proportional to the square of the distance between their centers.

Explanation:

Hope this helps!

Answer:

every particle attracts every other particle in the universe with force directly proportional to the product of the masses and inversely proportional to the square of the distance between them.

A 12 v source, a resistor, and a silicon diode that has been reverse-biased are all linked in series. The diode will use 0.7 volts of the voltage across the resistor, leaving 11.3 for the rest of the circuit's components.

The amount of electrical current that can flow through a circuit in an electronic device is controlled or limited by a resistor. Resistors can be used to deliver a certain voltage to an electronic element like a transistor.

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The distance of a point to the yz-plane is given by the absolute value of the x coordinate. So, for point A, the distance is equal to,

Dyz = | -4 | = 4 units

Next, for point B, the distance is equal to,

Dyz = | 3 | = 3 units

Lastly, for point C, the distance is equal to,

Dyz = | 2 | = 2 units

Since point C has the smallest distance to the yz -plane, this point is closest to the yz-plane.

Unlike the regular 2-dimensional Cartesian coordinate system, a three-dimensional coordinate system contains three axes. To plot points in this coordinate system, the point's ordered triple must be known, (x,y,z,).Each coordinate on the ordered triple represents a point that lies on one of the axes

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Answer:East

Explanation:

Answer: Volts.

Explanation: bc its right

Life has been found on Earth in a lake deep under the Antarctic ice pack. This resembles europa environment in the solar system which has been considered a possible location for life.

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Pluto is a planet in our solar system whose orbit brings it inside the orbit of another planet.

Numerous planets can be found in our solar system that Pluto is a member of. Pluto is a planet with an eccentric orbit that is highly oval in form and causes it to enter another orbit. It managed to enter Neptune's orbit. In comparison to Pluto, the dwarf planet, even Neptune can occasionally be far from the sun.

EThe events taking place on the planet are really unusual. In the years 1979 and 1999, it happens. Pluto, however, has never collided with Neptune. This occurs because Pluto only completes two of its three orbits around the sun, whereas Neptune completes three. This event stops two bodies from colliding.

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As a result, neither a skateboard nor a magic carpet can take us there from the starting place.

We can't go there from here (107,64)

Utilizing a skateboard or a magic carpet.

Utilizing a magic carpet with a (3, 1) mile per hour speed

To get to the point's y coordinate, we need 64 hours (107,64)

However, we eventually make it 192 miles in that way.

So, rather than, we arrive at point (192,64) (107,64)

Similarly, using a skateboard at a speed of (5,1) miles per hour

We finally arrive at (320,64) after 64 hours.

Therefore, utilizing a skateboard or a magic carpet won't get us there from where we started.

Longboards are often more suited for bumpy roads compared to street skateboards. The first is that longboards frequently have larger, softer wheels installed these normally have a diameter of 60 to 75mm and a durometer of 77 to 80A.

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If a train starts from rest and accelerates uniformly until it has traveled 7.1km and acquired a forward velocity of 36m/s. the train then moves at a constant velocity of 36m/s for 2.1min. The train then slows down uniformly at 0.072m/s^2, until it is brought to a halt.  Then the entire process take (in minutes ), approximately 17.1 minutes.

Here, we have the following values,

u = 0

v = 36 m/s

s = 7.1 which is 7100 m

now we know that [tex]v^{2} = u^{2} + 2at[/tex]

As u = 0 hence the equation we have is [tex]v^{2} = 2at[/tex]

Now to find acceleration (a), a = [tex]\frac{36 *36}{2*7100}[/tex] = 0.091 m/[tex]s^{2}[/tex]

Now we know that a = 0.072 v = 0 u = 36 m/s then for t

v = u+at

[tex]\frac{36}{0.072}[/tex] = 500 sec

Putting the values in v = u +at

t' = (36)/(0.09) = 400 seconds

t'' = 2.1 min which is 126 seconds

and t''' is 500 seconds

Adding them up gives us the total time, which is

Total time = 400 +120+500

= 1026 second

=17.1 minutes

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The variables of horizontal and vertical component of projectile are

A projectile motion involves a projectile, which is any object thrown into space upon which the only acting force is gravity.

The primary force acting on a projectile is gravity.

A projectile motion involves vertical and horizontal components,

Definition of variables in horizontal component of a projectile motion;

V = d/t

where;

Definition of variables vertical component of a projectile motion;

Thus, the variables of horizontal and vertical component of projectile are V as the final velocity, dx as the horizontal distance, V₀ as initial vertical velocity, dy as vertical height, a as acceleration and t as time of motion.

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Light with a frequency of 5.80 * 1014 hz travels in a block of glass that has an index of refraction of 1.52.

(a) Wavelength of the light in the vaccum is 5.17 X 10⁻⁷m

(b) Wavelength of light in glass is 3.40 X 10⁻⁷m

Given;

Frequency (λ) : 5.80 X 10¹⁴ Hz

Refractive index (η) = 1.52

(a) Wavelength of light λο = C/f

where, c = speed of light

f = frequency

                                      λο = (3 X 10⁸ m/s)/5.8 X 10¹⁴ Hz

                                      λο = 5.17 X 10⁻⁷

Wavelength of the light in the vaccum is 5.17 X 10⁻⁷m

(b) Wavelength of light in glass λ = λο/η

where, η = Refractive index

               λ = λο/η = (5.17 X 10⁻⁷m) X 1.52 = 3.40 X 10⁻⁷m

Therefore, wavelength of light in glass is 3.40 X 10⁻⁷m

The distance between the two crests or troughs of the light wave is known as the wavelength of light. Using the Greek letter lambda (λ), it is identified. As a result, wavelength refers to the separation between one wave's crest or dip and the following wave.

Visible spectrum: The part of the electromagnetic wave that can be observed by human vision is known as the visible spectrum. The visible spectrum in the electromagnetic spectrum spans from the infrared to the ultraviolet regions. Between the infrared and ultraviolet wavelength ranges is where the visible light falls. From 400 nanometers (violet) to around 700 nanometers, the human eye can sense light (red). Other electromagnetic radiations are either outside the range of biological function or are too small or huge to be detected by the human eye.

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