Answer:
La intensidad del campo eléctrico es 70312.5 [tex]\frac{N}{C}[/tex].
Explanation:
La perturbación que crea en torno a ella una carga eléctrica se representa mediante un vector denominado campo eléctrico.
Se dice que un campo eléctrico es uniforme en una región del espacio cuando la intensidad de dicho campo eléctrico es el mismo en todos los puntos de dicha región.
El campo eléctrico E creado por la carga puntual q en un punto cualquiera P se define como:
[tex]E=k*\frac{q}{r^{2} }[/tex]
donde q es la carga creadora del campo, k es la constante electrostática y r es la distancia desde la carga fuente al punto P.
En este caso, los datos son:
k= 9*10⁹ [tex]\frac{N*m^{2} }{C^{2} }[/tex]q= 5*10⁻⁶ Cr= 0.8 mReemplazando:
[tex]E=9*10^{9}\frac{N*m^{2} }{C^{2} } *\frac{5*10^{-6} C}{(0.8 m)^{2} }[/tex]
Resolviendo:
E= 70312.5 [tex]\frac{N}{C}[/tex]
La intensidad del campo eléctrico es 70312.5 [tex]\frac{N}{C}[/tex].
Proponer un modelo donde se puedan poner en práctica los conceptos de voltaje y potencia.
Answer: There you go
Explanation:
A student is constructing an investigation on static electricity. The student has three balloons and rubs two of them on a piece of wool. The student then touches each balloon to the wall to observe if static electricity would cause the balloon to stick. What is the independent variable in this investigation.
Answer:
Explanation:
As given, the student has three balloons and rubs two of them on a piece of wool. The rubbing of balloon on wool is the independent variable as it was done on two and not on the third as control.
How much farther away from a current-carrying wire would you
have to stand in order for the magnetic field generated by the
wire to be half as strong?
Answer: Your question is open ended therefore i will provide a general answer based on the general concept of your question.
Answer : At half distance between the center of the Magnetic field the magnetic pole the effect of the magnetic field generated will be half as strong
Explanation:
Magnetic force ∝ 1 / d^2
This simply means increase in the squared distance of an object leads to the decrease in the effect of the magnetic field generated by a current carrying wire.
Hence ;
At half distance between the center of the Magnetic field the magnetic pole, the effect of the magnetic field generated will be half as strong
Half the distance from a current-carrying wire to the body required to stand, in order for the magnetic field generated by the wire to be half as strong.
What is magnetic field?The magnetic field is the field in the space and around the magnet in which the magnetic field can be fill.
The value of magnetic field is reduced from a wire, with the distance of the wire.
The magnetic field is inversely proportional to the square of the distance of the current-carrying wire.
Hence, half the distance from a current-carrying wire to the body required to stand, in order for the magnetic field generated by the wire to be half as strong.
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A circular loop of flexible iron wire has an initial circumference of 165.0 cm, but its circumference is decreasing at a constant rate of 12.0 cm>s due to a tangential pull on the wire. The loop is in a constant, uniform magnetic field oriented perpendicular to the plane of the loop and with magnitude 0.500 T. (a) Find the emf induced in the
Answer:
emf = - 0.622 V
Explanation:
The electromotive force is given by Faraday's law
emf = [tex]- \frac{d \phi }{dt}[/tex]
Ф = B. A
bold indicates vectors
Ф = B A cos θ
in this case it is indicated that the magnetic field is constant and the angle between the magnetic field and the normal to the area is parallel, so the cos 0 = 1
we substitute
emf = [tex]- B \ \frac{dA}{dt}[/tex]
the area of the circle is
A = pi r²
[tex]\frac{dA}{dt} = \pi 2r \ \frac{dr}{dt}[/tex]
emf = B 2π r [tex]\frac{dr}{dt}[/tex]
speed is defined
v = [tex]\frac{dr}{dt}[/tex]
we substitute
emf = - 2π B r v
let's calculate
emf = - 2π 0.5 1.65 π0.12
emf = - 0.622 V
Light travels from air, index of refraction of 1.00, and is incident on water, index of refraction of 1.33. How will the light refract when it enters the water?
Answer:
23.8 What is the speed of light in water (n = 1.33)? ... 23.14 Two light pulses are emitted simultaneously from a source. ... The index of refraction for ice is 1.305 ... reflection so all of it is reflected with an angle of reflection of 53° and none of it is refracted into the air. ... For a diamond in air (n2 = 1.00), then, the critical angle is.
Explanation:welcome
What produces more severe burns, boiling water or steam?
Now explain in which physical state out of the two will the particles have more energy?
Answer:
[tex]steam[/tex]
Explanation:
[tex]in \: steam \: the \: particle \: \\ \\ will \: have \: more \: energy \\ \\ because \: steam \: contain \: more \\ \\ \: heat \: in \: the \: form \: of \: \\ \\ latent \: heat \: than \: water \: \\ \\ hope \: it \: helps[/tex]
A football team is practicing outdoors in August. The temperature is 94ºF, and the relative humidity is 80 percent. What steps must the coach take to prevent heat-related illness in his players on this day?
Answer:
To prevent heat-related illness in the players the coach could provide cooling off-breaks that allow players to cool off, have cool water, and fan themselves.
The coach can schedule training schedules at more pleasant temperatures such as in the morning (before 10am), late afternoon (after 5pm) or at night. In addition, he should make sure athletes keep their hydration up, always drinking water. Lastly, the coach should indicate that players wear light clothing with fabric that releases sweat. Also, all players should wear sunscreen as well.
Answer:
Practice should be canceled or moved indoors to an air-conditioned space.
Explanation:
Edmentum sample answer
A teacher is performing a demonstration about static electricity for his class by rubbing a balloon against a wool sweater. The balloon sticks to the wool sweater. Which particles are exchanged during the demonstration
Explanation:
the balloons which is positive looses an electron to the sweater, and the sweater which is negative gains the electron
Static charge is developed within a body temporarily with an induced polarization. Electrons are exchanged from wool surface to the balloon when they rubbed against each other.
What is static electricity?When two materials rub against each other in which one to be an insulator, they will attract by the induced polarization. Rubbing causes the free electrons in the condutor to be transferred towards the insulator.
This will cause a deformation that, the random charges in the material get polarized where the electrons in the insulator will repel to the opposite pol and positive charges will align in a pole close to the condutor.
This charge separation causes the positive pole of the balloon gets attracted into the wool surface. Hence, there forms a static electricity by the passage of electron. Thus free electrons are the particles exchanged in the demonstration.
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a volleyball player has spiked the ball. At the instant the ball leaves her hand, it is 2.6 m above the ground and has an initial vertical velocity of -20 m/s. How long will it take the ball to strike the ground if the opposing team doesn't block it?
Answer: 29.48 s
Explanation:
Given
The initial height of the ball is [tex]h=2.6\ m[/tex]
The ball leaves with an initial velocity of [tex]u=-20\ m/s[/tex]
Using the equation of motion
[tex]h=ut+\dfrac{1}{2}at^2\\\text{Insert the values}\\\\2.6=20\cdot t+\dfrac{1}{2}\times 9.8\times t^2\\\\\Rightarrow 9.8t^2+20t-5.2\\\\\Rightarrow t=\dfrac{-20\pm \sqrt{20^2-4\times 9.8\times (-5.2)}}{2\times 9.8}\\\\\Rightarrow t=\dfrac{-20\pm 603.84}{19.8}\\\\\Rightarrow t=29.48\ s\quad [\text{Neglecting negative t}][/tex]
Therefore, it take 29.48 s for ball to reach the ground.
he amount of energy required to break a nucleus into individual protons and neutrons is called
It would be C: Binding Energy
name the types of forces
Answer:
Frictional Force
Gravitational Force
Tension Force
Electrical Force
Normal Force
Magnetic Force
Air Resistance Force
Blue light and ultraviolet light are both shown upon a surface of sodium and cause the ejection of electrons. Which light will cause the ejected electrons to have a higher kinetic energy
Answer:
ultraviolet light (UV) has more energy than blue light, so electrons must have higher kinetic energy
Explanation:
This is a photoelectric effect exercise, which was explained by Einstein assuming that light is composed of photons and that they interact with electrons as particles.
h f = K + Ф
where fi is the work function of the material
K = hf -Ф
the work function for a given material is constant, therefore let's find the energy of each photon
E = h f
c = λ f
f = c /λ
we substitute
E = h c /λ
Blue light λ = 450 nm = 450 10⁻⁹ m
E = 6.63 10⁻³⁴ 3 10⁸/450 10⁻⁹
E = 4.42 10⁻¹⁹ J
UV light λ = 400 nm = 400 10⁻⁹ m
E = 6.63 10⁻³⁴ 3 10⁸/400 10⁻⁹
E = 4.97 10⁻¹⁹ J
therefore ultraviolet light has more energy than blue light, so electrons must have higher kinetic energy
Two particles experience an attractive electric force of 5 N. If one of the charges triples and
the distance between them doubles, what is the new electric force?
3.75 N
Explanation:
F = k(q)(q)/r^2 = 5 N
F' = k(q)(3q)/(2r)^2
= k×3(q)(q)/4r^2
= (3/4)[k(q)(q)/r^2]
= (3/4)F
= (3/4)(5 N)
= 3.75 N
The new electric force is 3.75 N.
The force on the charges by Coulomb's law is given by;
F = kq1q2/r^2
where q1=q2
F = kq1^2/r^2
Where F = 5N
If one of the charges triples;
q2 = 3q1
distance doubles = r = 2r
F' = 3kq1^2/4r^2
So;
F' = 3/4 F
F' = 3/4 × 5 = 3.75 N
The new electric force is 3.75 N.
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A boat produces a wave as it passes an aluminum can floating in a lake. Explain why the can merely moves up and down while waves propagate away from the disturbance caused by the boat.
Answer:
Due to waves.
Explanation:
The can merely moves up and down because the movement of the waves that propagate away from the disturbance caused by the boat. The Can has low density due to low mass and high volume which allow the can to float on the surface of water after prevent it from the drowning. The wave moves the can up and down but prevent it from going deep inside the water so we can say that the can moves due to movement of waves in water.
Pls help me...
..............
Explanation:
The graphs show maximum gravitational potential energy for the pendulum and they correspond to positions #1 and #5.
The system is released from rest with the cable taut, and the homogeneous cylinder does not slip on the rough incline. determine the angular acceleration of the cylinder and the minimum coeffi cient s of friction for which the cylinder will not slip.
Answer: hello your question is incomplete below is the complete question
answer : Angular acceleration = 7.88 rad/s^2 ( clockwise )
minimum coefficient of friction = -0.2225
Explanation:
First step : we calculate acceleration at point O
a = rα
acceleration at point A
aA = ( 2r ) α = 2α
∑Fy ( force in y axis ) = mass of block * aA
∴ T = mBlock ( g - 2α )
= 8.7 ( 9.81 - 2α )
attached below is the remaining part of the solution
Why is it so hot along the equator?
An ocean wave has a frequency of 9 Hz and a speed of 18 m/s. What is the wavelength of this wave?
O 162 m
O 0.5 m
02 m
0 27 m
Answer:
The answer is 2 because the formula is
wavelength=speed/frequency
the efficiency of a machine is always less than 100% because part of the energy input is used to
A. stop the machine after work
B. perform useful work on the load
C. overcome friction
D. lift the machine up
Answer:
C. Overcome Friction
Explanation:
When using any machine usually those with moving parts, you may notice heat forming near the areas where most movement occurs. As friction continues, more energy is used up and released as heat. For that reason, the efficiency of a machine will forever be less than 100%
I put the screenshot below.
Answer:
1-a
2-d
3-c
4-b
Explanation:
i tookt he words and put it in the sentance and these made most sence to me
All of the following are phases of
memory, with the exception of
which?
A. encoding
B. storage
C. timing
D. decoding
We have that the exception from the Memory phase is
Timing
From the question we are given
A. encoding
B. storage
C. timing
D. decoding
Generally
EncodingThis can be defined as memory phase where memory is storage , the the data to be stored is embedded on the storage device StorageThis Speak to the aspect of Securing for a long time a stored data. TimingTiming on the other hand is not a storage PhaseDecodingDecoding Speaks of the accept of memory where date stored id disbursed for use .Therefore
The the exception from the Memory phase is Timing
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Which statement best explains why there could be a force of attraction
between two electrically charged objects?'
because they have like charges
because they have unlike charges
because they have the same number of protons
because they have the same number of electrons
Which coefficients (in order) would BEST balance this chemical equation?
Answer:
1 N2 +3 H2 ---> 2NH3
Explanation:
hope this helps
do mark it :D
a battery of 9v is connected in series with resistors of 0.2ohm , 0.3ohm, 0.5ohm, and 5 ohm respectively. how much current would flow through a 5 ohm resistor.
Answer:
1.5 A
Explanation:
Applying
V = IR'....................... Equation 1
make I the subject of the equation
I = V/R'.................. Equation 2
Where V = Voltage, I = current, R' = Total resistance.
From the question,
In a series connection,
R' = 0.2+0.3+0.5+5 = 6 ohm.
Given: V = 9V
Substitute into equation 2
I = 9/6
I = 1.5 A.
Note: Since all the resistors are connected in series, thesame current flows through them
Therefore the current flowing through the 5 ohm resistor = 1.5 A
When Copernicus first systematically created his Sun-centered model of the universe, it did not lead to substantially better predictions of planetary positions than the Ptolemaic model. Why not
Answer:
When Copernicus first systematically created his Sun-centered model of the universe, it did not lead to substantially better predictions of planetary positions than the Ptolemaic model because the Catholic Church, which was the power at the time, stated it was false, and anybody who believed Copernicus and spread the "myth" were excommunicated or even executed. This was because a sun centered universe would mean that everything the Catholic Church had been teaching about how the Earth was the center of the universe would be false. If people believed it, the church would no longer be seen as the infallible authority, so they needed to stop it from spreading.
The figure below shows the apparatus used to measure the specific heat capacity of a metal. The electric heater is switched on and supplies 17 000 of thermal energy (heat) to the block of metal. The temperature of the metal rises from 16 °C to 38 °C. The mass of the block of metal is 850 g. No energy is lost from the metal. Calculate the specific heat capacity of the metal.
Answer:
0.909 J/gºC.
Explanation:
From the question given above, the following data were obtained:
Heat (Q) = 17000 J
Initial temperature (T₁) = 16 °C
Final temperature (T₂) = 38 °C
Mass (M) = 850 g
Specific heat capacity (C) =?
Next, we shall determine the change in the temperature of the metal. This can be obtained as follow:
Initial temperature (T₁) = 16 °C
Final temperature (T₂) = 38 °C
Change in temperature (ΔT)
ΔT = T₂ – T₁
ΔT = 38 – 16
ΔT = 22 °C
Finally, we shall determine the specific heat capacity of the metal. This can be obtained as follow:
Heat (Q) = 17000 J
Change in temperature (ΔT) = 22 °C
Mass (M) = 850 g
Specific heat capacity (C) =?
Q = MCΔT
17000 = 850 × C × 22
17000 = 18700 × C
Divide both side by 18700
C = 17000 / 18700
C = 0.909 J/gºC
Therefore, the specific heat capacity of the metal is 0.909 J/gºC.
What’s the mathematical relation between them
:the small mass and the larger mass.
Giving brainlist on this one
I really need help on this one please I’ll be so grateful!
Explanation:
there is no relationship between small mass and the bigger mass, but it can be related with the acceleration. Since Force is constant, acceleration is inversely proportional to the mass. Greater the mass, lesser is the acceleration and vise versa
A Star fleet science officer drops a large rock from a height of 1.55 m onto the surface of an alien planet. The rock strikes the ground in 0.230 s. Determine the acceleration of gravity.
Answer:
58.6 m/s²
Explanation:
Applying,
s = ut+gt²/2............ equation 1
Where s = height of the rock, u = initial velocity, t = time, g = accelration due to gravity of the planet.
From the question,
Given: s = 1.55 m, t = 0.23 s, u = 0 m/s (dropped from an height)
Substitute these values into equation 1
1.55 = (0×0.23)+g(0.23²)/2
1.55 = 0.0529g/2
0.0529g = 3.1
g = 3.1/0.0529
g = 58.6 m/s²
i’ll give brainliest!! please help and answer correctly! plsss answer quick
Answer:
i dont think anything will happen so maybe A: the wall is larger than you.
Explanation:
When responding to sound, the human eardrum vibrates about its equilibrium position. Suppose an eardrum is vibrating with an amplitude of 7.2 x10-7 m and a maximum speed of 3.6 x10-3 m/s. (a) What is the frequency (in Hz) of the eardrum's vibrations
Answer:
796.18 Hz
Explanation:
Applying,
Maximum velocity = Amplitude×Angular velocity
Therefore,
V' = A(2πf)............... Equation 1
Where V' = maximum velocity of the eardrum, A = Amplitude of vibration of the eardrum, f = frequency of the eardrum vibration, π = pie
make f the subject of the equation
f = V'/2πA................ Equation 2
From the question,
Given: V' = 3.6×10⁻³ m/s, A' = 7.2×10⁻⁷ m,
Constant: 3.14.
Substitute these values into equation 2
f = 3.6×10⁻³/( 7.2×10⁻⁷×2×3.14)
f = 796.18 Hz