Answer:
B = 6.57 T
Explanation:
The amplitude of emf of an AC generator coil can be given by the following formula:
[tex]EMF = N\omega AB[/tex]
where,
EMF = amplitude of emf = 20 V
N = No. of turns = 50
ω = angular speed= (350 rev/min)(2π rad/1 rev)(1 min/60 s) = 36.65 rad/s
A = Cros-sectional area of coil = πr² = π(0.023 m)² = 1.66 x 10⁻³ m²
Therefore,
[tex]20\ V = (50)(36.65\ rad/s)(1.66\ x\ 10^{-3}\ m^2)B\\\\B = \frac{20\ V}{(50)(36.65\ rad/s)(1.66\ x\ 10^{-3}\ m^2)}[/tex]
B = 6.57 T
Explain why the temperature of the water stays constant
Answer:
When boiling occurs, the more energetic molecules change to a gas, spread out, and form bubbles. ... In addition, gas molecules leaving the liquid remove thermal energy from the liquid. Therefore the temperature of the liquid remains constant during boiling.
Answer:
nice
Explanation:
A property of matter by which it remains at rest or in uniform motion in the same straight line unless acted upon by some external force.
Answer:
Inertia.
Explanation:
Inertia can be defined as the tendency of an object or a body to continue in its state of motion or remain at rest unless acted upon by an external force.
In physics, Sir Isaac Newton's first law of motion is known as law of inertia and it states that, an object or a physical body in motion will continue in its state of motion at continuous velocity (the same speed and direction) or, if at rest, will remain at rest unless acted upon by an external force.
For example, the inertia of an object such as a shopping cart is greatly dependent or influenced by its mass; the higher quantity of matter in a shopping cart, the greater will be its tendency to continuously remain at rest.
Hey guys...please help me with both b) and c) in this question.
Answer:
we cant draw plz show to any one
A 0.00287 C charge is 6.52 m from
a -0.00555 C charge. What is their
electric potential energy? Include
the correct sign (+ or -).
hy
(Unit = J)
Answer:
I know dude
Explanation:
-22000
Answer:
-22000
Explanation:
acellus
Determina la presión que ejercen los patinadores sobre el hielo, teniendo en cuenta que la cuchilla del patín mide 30cm de largo y su grosor es de 5mm, y que el peso de las dos personas es 120kg
Answer:
La presión que los patinadores ejercen sobre el hielo es 7,848,000 Pa
Explanation:
Los parámetros dados de los patinadores en la pala son;
La longitud de la hoja en el patín, l = 30 cm = 0.03 m
El espesor de la hoja, t = 5 mm = 0,005 m
El peso de las dos personas, m = 120 kg
Suponiendo que la sección transversal de la cuchilla sobre el hielo es rectangular, tenemos;
A = l × t
∴ A = 0,03 m × 0,005 m = 0,00015 m²
La fuerza de peso de los dos patinadores, W = m × g
Dónde;
g = La aceleración debida a la gravedad ≈ 9,81 m / s²
m = La masa de los dos patinadores = 120 kg
∴ W = 120 kg × 9,81 m / s² = 1,177,2 N
Presión, P = Fuerza, F/(Área, A)
∴ P = (1.177,2 N) / (0.00015 m²)= 7,848,000 Pascals
La presión que los patinadores ejercen sobre el hielo., P = 7,848,000 Pascals
A motor develops 80 kW of power as it lifts a loaded elevator 20.5 m in 45 s. How much force does the motor exert? *
Answer:
F=1.3⋅105N
Explanation:
It's common knowledge.
A force is acting on a 3-kg object during 5 seconds. If the object initially has a speed of 1.5m/s and after applying the force its speed is 4 m/s
Answer:
1.5 N
Explanation:
You've left us to guess what the question is. I will Assume it is what's the force?
Givens
m = 3 kg
vi = 1.5 m/s
vf = 4 m/s
t = 5 seconds
Formula
F = m * (vf - vi)/t
Solution
F = 3 * (4 - 1.5) / 5
F = 1.5 N
If the effort distance = 8 meters and the resistance distance = 1/2 meter. How much force does this man have to apply to lift the 1 ton (2000 N) weight?
Answer:
Explanation:
Effort x effort distance = load x resistance distance
effort distance = 8 m ,
load = 2000N
resistance distance = 1/2 m = 0.5 m
Putting the values in the equation above
effort x 8m = 2000N x .5
effort = 2000 x 0.5 / 8
= 125 N
force required = 125 N .
Two resistors, R1 = 25.0 ohms and
R2 = 64.0 ohms, are connected in
parallel. R1 has a 0.200 A current
flowing through it. What is the current
through R2?
Answer: 0.078
Explanation:
Given variables:
R1 = 25.0 , R2 = 64.0 , I1 = 0.200
Step 1: find V
0.200 = v/25
0.200 * 25 = v
5 = v
Step 2: Solve for I2
I = V/R
I = 5/64
I = 0.078125
Hope this helps!
Which of the following is not a region of the brain?
Cerebellum
Cortex
Diencephalon
Brain Stem
HOW DO WE HELP OTHERS NOT BE SAD IF THEY DON'T LIKE HUGS?
WOULD DISLIKES FOR HUGS BE RELEVANT TO THE LIKE FOR HUG TOYS?
Explanation:
hug is not the only solution to help someone you can take them to Peaceful place and sit with them saying nothing.
solar wind
?
a stream of plasma
coronal mass
ejections
2
includes prominences and
solar flares
gamma ray
photon
?
energy released during
nuclear fusion
Answer:
1. Solar wind: a stream of plasma.
2. Coronal mass ejection: includes prominences and solar flares.
3. Gamma ray photon: energy released during nuclear fusion.
Explanation:
1. Solar wind: a stream of plasma i.e charged particles such as ions, protons, alpha, and electrons that continuously escape at high speed from the Sun because of the very hot plasma contained in the solar corona.
2. Coronal mass ejection: includes prominences and solar flares that flow outward into interplanetary space. Thus, it's a release of solar wind plasma and magnetic field from the outer atmosphere or corona of the sun.
Additionally, a solar prominence is also known as filament and it can be defined as a large, bright, dense cloud of luminous ionized gas such as hydrogen, sodium calcium, etc., that erupts (extends) from the surface of the sun. It can linger in the corona for a very long time, reaching hundreds of thousands of kilometers into the sun's atmosphere (space).
3. Gamma ray photon: energy released during nuclear fusion of radioactive isotopes such as cobalt-60 or cesium-137. It has the shortest wavelength and highest energy in the electromagnetic radiation spectrum.
An electromagnetic spectrum refers to a range of frequency and wavelength that an electromagnetic wave is distributed or extends. The electromagnetic spectrum comprises of gamma rays, visible light, ultraviolet radiation, x-rays, radio waves, and infrared radiation.
Which of the following regions of the electromagnetic spectrum has the highest energy
(among the 4 listed here)?
A. Visible light
B. Radio waves
C. Infared light
D. UV light
The maximum energy is found in visible light from the following areas of the electromagnetic spectrum. Option A is correct.
What is the electromagnetic spectrum?The electromagnetic spectrum is seen as colors violet, indigo, blue, green, yellow, orange, and red. Blue light has a very short wavelength, and so produces a higher amount of energy.
Blue light in the visible zone has a very short wavelength. So that it produces a higher amount of energy that's why the blue part of visible light transfers the most energy.
Visible light from the following regions of the electromagnetic spectrum has the highest energy.
Hence, option A is correct.
To learn more about the electromagnetic spectrum refer:
https://brainly.com/question/15576247
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What period did the first plants appear
Answer:
Ordovician
Explanation:
Answer:
Ordovician: 470 million years ago
Se tienen 500g de alcohol etílico a una temperatura de -40 °C ¿Cuánto calor se necesita para transformarlo a vapor a una temperatura de 150ºC?
The question is: You have 500g of ethyl alcohol at a temperature of -40 ° C. How much heat is needed to transform it into steam at a temperature of 150ºC?
Answer: 233700 J heat is needed to transform ethyl alcohol into steam at a temperature of [tex]-40^{o}C[/tex] to [tex]150^{o}C[/tex].
Explanation:
Given: Mass = 500 g
Initial temperature = [tex]-40^{o}C[/tex]
Final temperature = [tex]150^{o}C[/tex]
The standard value of specific heat of ethyl alcohol is [tex]2.46 J/g ^{o}C[/tex].
Formula used to calculate the heat energy is as follows.
[tex]q = m \times C \times (T_{2} - T_{1})[/tex]
where,
q = heat energy
m = mass of substance
C = specific heat
[tex]T_{1}[/tex] = initial temperature
[tex]T_{2}[/tex] = final temperature
Substitute the values into above formula as follows.
[tex]q = m \times C \times (T_{2} - T_{1})\\= 500 g \times 2.46 J/g^{o}C \times [150 - (-40)]^{o}C\\= 233700 J[/tex]
Thus, we can conclude that 233700 J heat is needed to transform ethyl alcohol into steam at a temperature of [tex]-40^{o}C[/tex] to [tex]150^{o}C[/tex].
The equation of a displacement time-curve of a particle is given as x=〖10t〗^2, the instantaneous velocity at t= 1s is *
please find ur answer in the attached image, mark as brainliest if it helps.
Will mark brainliest
How can humans use less of wind energy?
Answer:
use different energy sources
Explanation:
Which property of Special Relativity allows an electromagnet to work?
Answer:
El magnetismo es el conjunto de fenómenos físicos mediados por campos magnéticos. Estos pueden ser generados por las corrientes eléctricas o por los momentos magnéticos de las partículas constituyentes de los materiales. Es parte de un fenómeno más general: el electromagnetismo. También denomina a la rama de la física que estudia dichos fenómenos.
El níquel, hierro, cobalto y sus aleaciones se encuentran entre algunos de los materiales que presentan propiedades magnéticas que son fácilmente observables, y comúnmente se llaman imanes. Estos materiales son ferromagnéticos e interactúan fuertemente con los campos magnéticos externos a la vez que generan un campo magnético propio. Esto permite la tan conocida repulsión y atracción entre los polos de los imanes. Sin embargo, todos los materiales son influidos, de mayor o menor forma, por la presencia de un campo magnético
Answer:
b I think is the answer OK bro
The speed of light is 3 x 10^8 m/s. Find the wavelength for a typical AM radio wave with a frequency of 600 kHz. Answer in units of m.
Answer:
wavelength = (3×10^8 m/s)(6×10^5 Hz)
= 1.8×10^14 m
A 6.00 volt battery is in a circuit with two resistors, A and B, connected in parallel. If the current flowing
out of the battery is 90.0 mA, what is the value in ohms of B if A is 100 ?
Answer: [tex]200\Omega[/tex]
Explanation:
Given
The battery used is 6V in magnitude
The current flow is 90 mA
If the resistance of A is [tex]100\Omega[/tex]
Net resistance of the circuit is
[tex]R_{net}=\dfrac{V}{I}\\\\\Rightarrow R_{net}=\dfrac{6}{90\times 10^{-3}}\\\\\Rightarrow R_{net}=\dfrac{200}{3}\Omega[/tex]
If A and B are in parallel then their net resistance must be [tex]\frac{200}{3}[/tex]
[tex]\dfrac{1}{\frac{200}{3}}=\dfrac{1}{100}+\dfrac{1}{R_b}\\\\\Rightarrow \dfrac{1}{R_b}=\dfrac{3}{200}-\dfrac{1}{100}\\\\\Rightarrow \dfrac{1}{R_b}=\dfrac{3-2}{200}\\\\\Rightarrow R_b=200\Omega[/tex]
5. What is the amount of work done when JoAnne throws a baseball 6.5 meters at a force of 40 newtons?
Answer:
W = 260 J
Explanation:
Work is defined by
W = F. d
Bold type indicates vectors,
W = F d cos θ
where tea is the angle between the force and the displacement, in this case the force is parallel to the displacement so the angle is zero and the
cos 0=1
let's calculate
W = 40 6.5
W = 260 J
When light reflects off a rough surface, what happens to the image?
A. It's clear but inverted
B. It's clear and upright
C. It's blurry and inverted
D. No image is formed
Answer:
D. NO MAGE IS FORMEDExplanation:
#CARRY ON LEARNING#MARK BRAINLITSThe light reflects off a rough surface, what happens to the image is that will occurs No image is formed.
How to explain the reflection of light?Reflection of light happens when a ray of light strikes a reflective surface and returns to its original medium. This phenomenon allows us to see all bodies that do not produce their own light, called secondary sources of light or simply illuminated bodies.
Diffuse reflection occurs when light reflects off a rough surface and forms a blurry image or no image at all.
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A wave has an amplitude of 0.2 cm.
What does this mean?
Select one:
- The horizontal distance between a crest and a trough is 0.2 cm.
- The distance between the resting point and the maximum height of the wave is 0.2 cm.
- The distance between two crests is 0.2 cm.
- The vertical distance between a crest and a trough is 0.2 cm.
Basic design elements include (Check 7)
What are the 3 properties of color? Immersive Reader
depth, shade, fragrance
value, hue, depth
saturation, hue, chroma
hue, value, intensity
Answer: depth, shade, fragrance
Explanation:
A 45kg person is standing at the top of a 15m building. If the person falls and lands on a trampoline with a spring constant of 55,000 N/m how much would the trampoline stretch?
[tex]\displaystyle \triangle x = 0.904353 \ m[/tex]
General Formulas and Concepts:Physics
Energy
Gravitational Potential Energy Formula: [tex]\displaystyle U_g = mgh[/tex]
m is mass (in kg)g is gravity (9.8 m/s²)h is height (in m)Spring Potential Energy Formula: [tex]\displaystyle U_k = \frac{1}{2}k \triangle x^2[/tex]
k is spring constant (in N/m)Δx is displacement (in m)Law of Conservation of Energy
Math
Pre-Algebra
Order of Operations: BPEMDAS
BracketsParenthesisExponentsMultiplicationDivisionAdditionSubtractionLeft to RightEquality Properties
Multiplication Property of EqualityDivision Property of EqualityAddition Property of EqualitySubtraction Property of EqualityExplanation:Step 1: Define
Identify
[Law of Conservation of Energy] [tex]\displaystyle U_g = U_k[/tex] → [tex]\displaystyle mgh = \frac{1}{2}k \triangle x^2[/tex]
[Given] m = 45 kg
[Given] h = 15 m
[Given] k = 55000 n/m
[Solve] Δx
Step 2: Solve for Δx
Substitute in variables [Law of Conservation of Energy]: [tex]\displaystyle (45 \ kg)(9.8 \ m/s^2)(15 \ m) = \frac{1}{2}(55000 \ N/m) \triangle x^2[/tex]Multiply: [tex]\displaystyle (441 \ kg \cdot m/s^2)(15 \ m) = \frac{1}{2}(55000 \ N/m) \triangle x^2[/tex]Multiply: [tex]\displaystyle 22491 \ J = \frac{1}{2}(55000 \ N/m) \triangle x^2[/tex]Multiply: [tex]\displaystyle 22491 \ J = (27500 \ N/m) \triangle x^2[/tex][Division Property of Equality] Divide 27500 N/m on both sides: [tex]\displaystyle 0.817855 \ m^2 = \triangle x^2[/tex][Equality Property] Square root both sides: [tex]\displaystyle 0.904353 \ m = \triangle x[/tex]Rewrite: [tex]\displaystyle \triangle x = 0.904353 \ m[/tex]Topic: AP Physics 1 - Algebra Based
Unit: Energy
Book: College Physics
If the mass of an object increases, predict what will happen to the coefficient of sliding friction.
1. The coefficient of sliding friction will increase.
2. The coefficient of sliding friction decrease.
3. The coefficient of sliding friction will stay the same.
4. The coefficient of sliding friction will decrease by half.
a wagon has a mass of 12 kg it has an acceleration of 3 m/s/s 2 what is the net force that was required for the wagon to have this acceleration
Pls pls pls help me solve this problem
Answer:
[tex]\boxed {\boxed {\sf 36 \ Newtons}}[/tex]
Explanation:
According to Newton's Second Law of Motion, force is the product of mass and acceleration.
[tex]F=m \times a[/tex]
The mass of the wagon is 12 kilograms and the acceleration is 3 meters per square second.
m= 12 kg a= 3 m/s²Substitute the values into the formula.
[tex]F= 12 \ kg \times 3 \ m/s^2[/tex]
Multiply.
[tex]F= 36 \ kg*m/s^2[/tex]
1 kilogram meter per square second ( 1 kg*m/s²) is equal to 1 Newton (N)Our answer of 36 kg*m/s² is equal to 36 N[tex]F= 36 \ N[/tex]
The force required for the 12 kilogram wagon to accelerate at 3 meters per square second is 36 Newtons.
What is the primary type of battery we use today to store energy?
(PLEASE DO NOT GIVE ME ANY LINK, JUST TYPE YOU ANSWER)
Lithium-Ion batteries are commonly used in portable electronics and electric vehicles. These rechargeable batteries have two electrodes: one that's positively charged and contains lithium and another negative one that's typically made of graphite.
Answer:
Lithium-Ion: Li-ion batteries are commonly used in portable electronics and electric vehicles. These rechargeable batteries have two electrodes: one that's positively charged and contains lithium and another negative one that's typically made of graphite.
Explanation:
Hope this helps :)
Have a great day!
Brainliest?
El tren Lima la Orolla va a una velocidad de 10 km/h y de pronto aplica el freno por un derrumbe en la via. Si demora 18 segundos en detenerse ¿Qué distancia recorrerá hasta detenerse completamente?
Answer:
Distancia = 50.04 metros
Explanation:
Dados los siguientes datos;
Velocidad = 10 km/h
Tiempo = 18 segundos
Para encontrar la distancia;
Conversión:
10 km/h = 10 * 1000/3600 = 2.78 m/s
Distancia = velocidad * tiempo
Distancia = 2.78 * 18
Distancia = 50.04 metros
Por lo tanto, el tren viajaría 50.04 metros antes de detenerse por completo.
Answer:
yes
Explanation:
yes