Answer:
υ = 5.62 x 10¹⁴ Hz
Explanation:
The process of of formation of photons takes place due to interaction of a particle with its anti-particle is called Annihilation of Matter. Here SPARTYON absorbs anti-SPARYTON to form 2 photons. Applying conservation of energy to the to this scenario, we get:
2(Energy of Each Photon) = Rest Mass Energy of SPARTYON + Rest Mass Energy of anti-SPARTYON
[tex]2hv = m_{0}c^2 + m_{0}c^2\\\\2hv = 2m_{0}c^2\\\\hv = m_{0}c^2\\\\v = \frac{m_{0}c^2}{h}[/tex]
where,
υ = frequency of each photon = ?
m₀ = rest mass of SPARTYON = mass of anti-SPARTYON = 455*Mass of electron
m₀ = 455(9.1 x 10⁻³¹ kg) = 4.14 x 10⁻²⁸ kg
c = speed of light = 3 x 10⁸ m/s
h = Plank's Constant = 6.625 x 10⁻³⁴ J.s
Therefore, using these values in the equation, we get:
[tex]v = \frac{(4.14 x 10^{-28} kg)(3 x 10^8 m/s)^2}{6.625 x 10^{-34}J.s}\\\\[/tex]
υ = 5.62 x 10¹⁴ Hz
The maker of an automobile advertises that it takes 8 seconds to accelerate from 15 kilometers per hour to 70 kilometers per hour. Assuming constant acceleration, compute the distance, in meters, the car travels during the 8 seconds. Round your answer to two decimal places.
Answer:
The distance the car traveled during the given time is 94.44 m.
Explanation:
Given;
time of motion t = 8 seconds
initial velocity, u = 15 km/hr = 4.167 m/s
final velocity, v = 70 km/hr = 19.444 m/s
The distance traveled by the car during this time is given by;
[tex]s = (\frac{u+v}{2} )t\\\\s = (\frac{4.167+19.444}{2} )*8\\\\s = 94.44 \ m[/tex]
Therefore, the distance the car traveled during the given time is 94.44 m.
which is a property of bases?
Answer:
to turn red litmus blue and react with acid to form salt
A submarine uses sub-radio communication at 200 Hz. What is the wavelength of the electromagnetic waves in water with index of refraction 1.333?
Answer:
Wavelength in water, [tex]\lambda=1.12\times 10^6\ m[/tex]
Explanation:
Given that,
A submarine uses sub-radio communication at 200 Hz.
The index of refraction, n = 1.333
The refractive index of a medium is given by :
[tex]\mu=\dfrac{c}{v}\\\\\mu=\dfrac{c}{\lambda_m f}\\\\\lambda_m=\dfrac{c}{\mu f}\\\\\lambda_m=\dfrac{3\times 10^8}{1.333\times 200}\\\\=1.12\times 10^6\ m[/tex]
So, the wavelength of the electromagnetic waves in water is [tex]1.12\times 10^6\ m[/tex].
Sounds waves are an example of which type of wave? Longitudinal Transverse O Electromagnetic
Answer:
Happy now?
Explanation:
Correct answer:
Sound waves are longitudinal waves, meaning that the waves propagate by compression and rarefaction of their medium. They are termed longitudinal waves because the particles in the medium through which the wave travels (air molecules in our case) oscillate parallel to the direction of motion.
Which is the pathway for information through a neuron?
dendrite → axon → cell body → axon terminals
axon terminals → axon → cell body → dendrite
dendrite → cell body → axon → axon terminalsWhich structures produce a fluid to protect the body in the first line of defense? Select four options.
hair
stomach
mouth
eyes
skin
cell body → dendrite → axon → axon terminals
Answer:
cell body → dendrite → axon → axon terminals
Explanation:
im in edgunity
If a machine exerts 12000 J of work with800 N of force the distance it covered was
Answer:
15 mExplanation:
The distance covered can be found by using the formula
[tex]d = \frac{w}{f} \\ [/tex]
f is the force
w is the workdone
From the question we have
[tex]a = \frac{12000}{800} = \frac{120}{8} \\ [/tex]
We have the final answer as
15 mHope this helps you
A geologist visits Jessica’s classroom. He shows the class a diagram of different landforms. Which of these landforms is created by earth materials being deposited? *
Answer:
The answer is A) River delta
Explanation:
River deltas are formed by the deposition of sediment carried by rivers.
Violet throws a ball down from a bridge and it strikes the water below. We can ignore air resistance. What is true about the acceleration and speed of the ball on its way down
Answer:
an acceleration on the y-axis, on the x-axis she has no acceleration.
y-axis the speed increases linearly, speed of the ball is constant on the x-axis
Explanation:
When the girl throws the ball, she is subjected to an acceleration on the y-axis called a relationship of gravity that is constant, on the x-axis she has no acceleration.
The speed of the ball is constant on the x-axis since there are no acceleration relationships and on the y-axis the speed increases linearly, daring the relationship constant.
9. Two moving objects will change their motion if which of the following is true? a.There is no friction on the objects. b. The objects collide with each other. c.One object is heavier than the other. d.The objects are moving in space.
Answer:
lol
Explanation:
lolllll i need points sorry
Marisol breaks her leg when falling out of a tree.Why did her leg break?
Answer:
She fell out of a tree
Explanation:
g f, as a pioneer, you wished to warm your room by taking an object heated on top of a stove into it, which of the following 15 lb objects, each heated to 100 degrees celcius, would be the best choice and why. The specific heat capacity (in J/(g.K)) is given in parenthesis. Iron (0.450), copper (0.387), granite (0.79), gold (0.129), or water (4.18)
Answer:
Granite
Explanation:
The best choice would be granite.
This is because granite has the highest specific heat capacity of 0.79 J/(g.K) and would thus store more heat in it for the same mass and same temperature change as the other materials.
Since it contains more heat, it would be able to heat up the room to a higher temperature than the other materials.
A 20 kg block rests on a rough horizontal table. A rope is attached to the block and is pulled with a force of 80 N to the left. As a result, the block accelerates at 2.5 m/s2. What is the coefficient of kinetic friction between the block and the table?
Explanation:
Fnet = ma = (20kg)(2.5m/s²) = 50N to the left.
Hence Ff = 30N to the right. (Ff is frictional force)
Coefficient of kinetic friction
= Ff / Normal force
= 30N / (mg)
= 30N / [(20kg)(9.81N/kg)]
= 0.15.
Two charges +3μC+3μC and +12μC+12μC are fixed 1 m apart, with the second one to the right. Find the magnitude and direction of the net force on a −2-nC charge when placed at the following locations: (a) halfway between the two (b) half a meter to the left of the +3μC+3μC charge (c) half a meter above the +12μC+12μC charge in a direction perpendicular to the line joining the two fixed charges
Answer:
a) F_total = -648 10⁻⁴ N
, b) F_total = - 312 N, c) F_total = (38.6 i ^ + 883.4 j ^) 10⁻⁴ N
Explanation:
To solve this exercise we will use Coulomb's law
F = k q₁ q₂ / r²
and that forces are vectors
They indicate that the charge q₁ = 3 10⁻⁴ C and the charge q₂ = 12 10⁻⁴ C being separated d = 1 m
Let's place the reference system on the charge q₁
a) we place a third charge q₃ = 2 10⁻⁹ C at the midpoint
r = d / 2
r = ½ m
Since all charges have the same sign, the forces are repulsive, so the total force is
F_total = F₁₃ - F₂₃
let's develop this expression
F_total = k q₁ q₃ / r² - k q₂ q₃ / r²
F_total = [tex]k \frac{q_{3} }{r^{2} } ( q_{1} - q_{2} )[/tex]
let's calculate
F_total = 9 10⁹ (3- 12) 10⁻⁴
F_total = -648 10⁻⁴ N
b) place the charge q₃ at a distance r = -0.5 m to the left of the charge q₁
F_total = -F₁₃ -F₂₃
F_total = -k q₁ q₃/ r₁₃² - k q₂ q₃ / r₂₃²
F_total = - [tex]k q_{3} ( \frac{q_{1} }{r_{13}^{2}} + \frac{q_{2} }{r_{23}^{2} } )[/tex]
the distances
r₁₃ = 0.5 m
r₂₃ = 0.5 +1 = 1.5 m
calculate
F_total = - 9 10⁹ 2 10⁻⁹ (3 /0.5² + 12 /1.5²) 10⁻⁴
F_total = - 18 (12 + 5.33) 10⁻⁴
F_total = - 312 N
c) the charged q₃ is placed on the charge q₂ on the y axis.
In this case the charge q₂ exerts a force on the y-axis on the charge q₃
F₂₃ = k q₂ q₃ / r² j ^
where r = 0.5 m
let's calculate
F₂₃ = 9 10⁹ 12 10⁻⁴ 2 10⁻⁹ / 0.5²
F₂₃ = 864 10⁻⁴ j ^
Charge q1 exerts a repulsive force on the axis that joins them
F₁₃ = k q₁ q₃ / r₁₃²
let's look for the distance
r₁₃ =
r₁₃ = 1,118 m
Let's use trigonometry to find the direction of this distance
tan θ = y / x
θ = tan⁻¹ (y / x)
θ = tan⁻¹ (0.5 / 1)
θ = 26.6º
let's write this force in its components
F₁₃ = k q₁
(cos 26.6 i ^ + sin 26.6 j ^)
let's calculate
F₁₃ = 9 10⁹ 3 10⁻⁴
(cos 26.6 i ^ + sin 26.6 j ^)
F₁₃ = 43.2 (0.894 i ^ + 0.448 j ^) 10⁻⁴
F₁₃ = (38.6 i ^ + 19.4 j⁾ 10⁻⁴ N
Let's write the total force
F_total = F₁₃ i ^ +
j ^ + F₂₃ j ^
let's substitute
F_total = 38.6 10⁻⁴ i ^ + (19.4 + 864) 10⁻⁴ j ^
F_total = (38.6 i ^ + 883.4 j ^) 10⁻⁴ N
Unpolarized light with intensity 300 W/m^2 passes first through a polarizing filter with its axis vertical, then through a second polarizing filter. It emerges from the second filter with intensity 121 W/m^2. What is the angle from vertical of the axis of the second polarizing filter?
Answer:
The angle from vertical of the axis of the second polarizing filter is 50.57⁰.
Explanation:
Given;
intensity of the unpolarized light, I₀ = 300 W/m²
intensity of emergent polarized light, I = 121 W/m²
let the angle from vertical of the axis of the second polarizing filter = θ
Apply Malus's law, intensity of emergent polarized light is given as;
I = I₀Cos²θ
[tex]Cos^2 \theta = \frac{I}{I_o} \\\\Cos^2 \theta =\frac{121}{300} \\\\Cos^2 \theta =0.4033\\\\Cos \theta = \sqrt{0.4033} \\\\Cos \theta = 0.6351\\\\\theta = Cos^{-1} (0.6351)\\\\\theta = 50.57 ^0[/tex]
Therefore, the angle from vertical of the axis of the second polarizing filter is 50.57⁰.
how do magnets loose their magnetism when stored without keepers
Answer:
Storing it at a temperature greater than its Curie temperature will demagnetize it. The Curie temperature--named after the French scientist Pierre Curie--is the temperature at which magnets lose their permanent magnetism. ... Samarium cobalt, neodymium, and ceramic/ferrite magnets are brittle.
I need help with this please thank you!
D. A beam balance does not measure mass; it measures weight. The gravitational force of attraction between the earth and an object depend on the mass of the object. ... The beam balance measures the force F exerted by the mass on the beam balance
If a net force is acting on an object, then the object is definitely
at rest
Оа
Ob
с
moving at a constant velocity
being accelerated.
losing mass
Od
Answer:
it is being accelerated
Explanation:
A piano wire has a tension of 650 N and a mass per unit length of 0.060 g/cm. What is the speed of waves on this wire
Answer:
The speed of waves on this wire is 329.14 m/s
Explanation:
Given;
tension of the wire, T = 650 N
mass per unit length, μ = 0.06 g /cm = 0.006 kg/m
(convert the unit of mass per length in g/cm to kg/m by dividing by 10 = 0.06 / 10 = 0.006 kg/m)
The speed of waves on this wire is given as;
[tex]v = \sqrt{\frac{T}{\mu} } \\\\v = \sqrt{\frac{650}{0.006} }\\\\v = 329.14 \ m/s[/tex]
Therefore, the speed of waves on this wire is 329.14 m/s
QUICK!! What class of lever is this image depicting?
1st class
2nd class
3rd class
4th class
Answer:
4th
Explanation:
Answer:
4th
Explanation:
Is this a scientific model? Use complete sentences to explain why or why not.
Answer:
Yes
Explanation:
This is a scientific model as it represents complex objects, events, and a physical process. It has detail and an image that is relevant and helps to understand the process if that's water cycle.
A total charge Q is uniformly distributed through-out a spherical volume of radius a. Which of the following is a dimensionally correct expression for the potential difference between the center of the sphere and its surface?
a. (1/8πε0)Q
b. (1/8πε0)Qa^2
c. (1/8πε0)Qa
d. (1/8πε0)Q/a
e. (1/8πε0) Q/a^2
Answer:
d. (1/8πε0)Q/a
Explanation:
The potential difference [tex]v = \dfrac{1}{4 \pi \epsilon _0} \dfrac{Q}{r}[/tex]
[tex]= (\dfrac{1}{4 \pi \epsilon _0}Q) \dfrac{1}{r}[/tex]
Suppose we separate the quantity [tex](\dfrac{1}{4 \pi \epsilon _0}Q)[/tex] which is dimensionally and equally the same as [tex](\dfrac{1}{8 \pi \epsilon _0}Q)[/tex]. Then, we will have [tex]\dfrac{1}{r}[/tex] and [tex]\dfrac{1}{a}[/tex] as the same dimension.
Therefore, the correct option is:
d. (1/8πε0)Q/a
How many joules of work are done on a box when a force of 25 N pushes it 3 m?
Answer:
75joules
Explanation:
Workdone = force x distance
workdone = 25 x 3
workdone = 75joules
A circuit is complete when there is a ___ path for electricity to travel from one end
of the energy source to the other end.
a.) continuous path
b.) zig zag path
c.) random path
d.) broken path
A circuit is complete when there is a continuous path for electricity to travel from one end of the energy source to the other end.
What is electric circuit?Electric circuit: a way for current to travel. A battery or generator, a device that provides energy to the charged particles that make up the current, a device that uses current, such as a lamp, an electric motor, or a computer, and the connecting wires or transmission lines make up an electric circuit. Ohm's law and Kirchhoff's rules are two fundamental laws that quantitatively define how electric circuits function.
Several categories are used to categorise electric circuits. One-way current only flows through a direct-current circuit. As in most residential circuits, an alternating-current circuit transports current that pulses back and forth repeatedly every second.
Learn more about electric circuit here:
https://brainly.com/question/29032441
#SPJ5
How does increasing the starting height affect the final speed?
Answer:
To investigate into how the height of a ramp affects the speed of a toy car rolled down a hill or slope because the higher the ramp the more Gravitational potential Energy (GPE), the more kinetic energy converted and the car will go faster. So the ramp increases, the velocity will also increase.
Explanation:
Based on the passage, how do the boys resolve their conflict?
They decide to fight to the death.
They decide not to care who the winner is.
They decide to fight a rematch.
They decide to end their friendship.
the answer is B
i jus took the assement
Answer:
B
Explanation:
An electromagnetic wave of wavelength 435 nm is traveling in vacuum in the —z direction. The electric field has an amplitude of 2.70 x 10^-3 V/m and is parallel to the x axis. What are the frequency and the magnetic-field amplitude of this wave? In calculating the amplitude of the magnetic field, you divide the electric-field amplitude by the speed of light, which requires you to convert some units. Which of the following is equivalent to 1 T?
a. 1 (N/A.m)
b. 1 (N/c.m)
c. 1 (N.s/C.m)
d. 1 (V.s/m^2)
Answer:
a) 6.9*10^14 Hz
b) 9*10^-12 T
Explanation:
From the question, we know that
435 nm is given as the wavelength of the wave, at the same time, we also know that the amplitude of the electric field, E(max) has been given to be 2.7*10^-3 V/m
a)
To find the frequency of the wave, we would be applying this formula
c = fλ, where c = speed of light
f = c/λ
f = 3*10^8 / 435*10^-9
f = 6.90*10^14 Hz
b) again, to find the amplitude of the magnetic field, we would use this relation
E(max) = B(max) * c, magnetic field amplitude, B(max) =
B(max) = E(max)/c
B(max) = 2.7*10^-3 / 3*10^8
B(max) = 9*10^-12 T
c) and lastly,
1T = 1 (V.s/m^2)
How fast is the runner moving between 2-3 seconds? Is the other question please help
Answer:
Concept: Physics analysis
We have a distance vs time graph That indicates that we are analyzing the distance traveled by either a person or a particle The runner starts at 4 meters and over the interval of a second runs to 12 meters reaching the 16 meter mark. The runner stood at 16 meter mark for one full second and then runs back 10 meter over the course of one second reaching 6 meter. The runner runs forward again for a second traveling 6 meters, ending at the 12 meter mark.How can you increase the gravitational potential energy (GPE) of an empty shoe box on the bottom shelf of a bookcase
Answer:
Add items to the box
Explanation: I did the test
Answer:
Add some Items to it.
Explanation:
A laser beam is incident on two slits with a separation of 0.220 mm, and a screen is placed 4.80 m from the slits. If the bright interference fringes on the screen are separated by 1.60 cm, what is the wavelength of the laser light
Answer:
λ = 7.333 x 10⁻⁷ m = 733.3 nm
Explanation:
We can use the formula of fringe spacing from Young's Double Slit Experiment, to find the wavelength of light:
Δx = λL/d
where,
Δx = fringe spacing = 1.6 cm = 0.016 m
λ = wavelength of laser light = ?
L = Distance between slits and screen = 4.8 m
d = slit separation = 0.22 mm = 0.00022 m
Therefore, using these values in the given equation, we get:
0.016 m = (λ)(4.8 m)/(0.00022 m)
λ = (0.016 m)(0.00022 m)/(4.8 m)
λ = 7.333 x 10⁻⁷ m = 733.3 nm
Given A = (0.210 + 0.41) (1.10 x 102). Show the result for A in correct number of
significant figures.
Answer:
69
Explanation:
Perform addition first as;
(0.210 + 0.41) = 0.62 -------{2 significant figures}
Perform product
(1.10 x 102) = 112 -------------- {3 significant figures}
The combined product
0.62 x 112 =69.44
= 69 ----------2 significant figures
Rule
The least number of significant figures in the numbers performing the operation determines the number of significant figures in the answer.