Answer:
[tex]\rho=1.10\times 10^{-7}\ \Omega[/tex]
Explanation:
Given that,
The length of the resistance wire, l = 10 m\
The resistance of this wire is 5.65 Ω/m
The diameter of the wire, d = 0.5 mm
Radius, r = 0.25 mm = 0.00025 m
We need to find the resistivity of isachrom 60 at 20°C. The formula for the resistance of a wire is given by :
[tex]R=\rho\dfrac{l}{A}\\\\\rho=\dfrac{RA}{l}\\\\\rho=\dfrac{R\pi r^2}{l}\\\\\rho=\dfrac{5.65\times \pi \times (0.00025)^2}{10}\\\\\rho=1.10\times 10^{-7}\ \Omega[/tex]
The resistivity of the wire is [tex]1.10\times 10^{-7}\ \Omega[/tex].
Was Michael Jean Cazabon a local or regional artist?
Answer:
artist
Explanation:
If you walk up a set of steps empty handed and walk up the same set of steps holding a flower pot in thesame amount of time. Which requires more work?
a.) empty handed b.) holding flower pot c.) same
Explanation:
I think holding a flower pot. more energy will be needed
2. A bullet was shot by a gun with an initial speed of 260 m/s and is fired at an angle of 30 to the ground. a. How much is the value Vy at the top of the bullet's trajectory? b. Calculate the time taken by the bullet to reach its maximum altitude. c. Deduce the total time taken by the bullet in the air. d. Calculate the range of the bullet.
Answer:
Explanation:
a )
the value Vy at the top of the bullet's trajectory will be zero . At the top , only the horizontal component Vx will exist .
b )
At the top Vy = 0
initial velocity will have vertical component = 260 sin30 = 130 m /s
acceleration = - g = - 9.8
v = u - gt
o = 130 - 9.8 t
t = 13.26 s .
c )
Total time = Time of ascent + time of descent
= 13.26 + 13.26 = 26.52 s
d )
Range R = u² sin2Ф / g , where u is initial velocity , Ф is angle of throw , g is acceleration due to gravity .
R = 260² sin 2 x 30 / 9.8
= 5973.8 m .
PLS ANSWER FAST WILL GIVE BRAINLY!! BUT ONLY IF YOU KNOW!!
Fill in the blanks
Cobalt has 27 protons, 32 neutrons and 27 electrons. What is it's atomic mass?
Answer:
58.933195 u or 59 u
Explanation:
Atomic mass of cobalt is 58.933195 u
A coin is dropped off of a building landing on its side. It hits with a pressure of 400/2 It hits with a force of 0.1 Calculate the area of the coin?
Complete Question:
A coin is dropped off of a building landing on its side. It hits with a pressure of 400 N/m². It hits with a force of 0.1N. Calculate the area of the coin?
Answer:
Area = 0.00025 m²
Explanation:
Given the following data;
Pressure = 400N/m²
Force = 0.1N
To find the area of the coin;
Pressure = Force/area
Area = Force/pressure
Substituting into the equation, we have;
Area = 0.1/400
Area = 0.00025 m²
A solar eclipse may occur when:
A. when the moon is 3rd quarter phase
B. when the moon is full
C. when the moon is at 1st quarter phase
D. when the moon is new
b) The man has a mass of 85 kg. Gravitational field strength = 9.8 N/kg.
Calculate the weight of the man. Use the equation: weight = mass x
gravitational field strength
Answer:
mass× weight
85×9.5=807.5 kg
Which two statements are true about the wave shown?
A. The wave could be transmitting light. B. The wave is a transverse wave.
C. The wave is a mechanical wave.
D. The wave could be transmitting sound.
Answer:
c and d
Explanation:
The wave shown in the figure is Sound waves. The sound wave is a mechanical wave. Hence, options C and D are correct.
What are sound waves?Sound is traveled by means of vibrations of particles in the medium. Sound waves require a medium to propagate. The energy propagation by means of adiabatic loading and unloading is called sound or acoustic waves.
The sound waves produce compression and rarefaction in the air. The sound waves are called Longitudinal waves because the direction of propagation is parallel to the vibration of particles.
Sound waves are considered only as waves because they exhibit a wave nature. Light has both properties of wave and particle. Light is an electromagnetic wave and it is transverse in nature.
The sound waves require a medium like air, water, solids, etc for propagation. Hence it is called Mechanical waves. Light waves do not require a medium to propagate. From the given wave pattern, it exhibits the property of sound waves.
Hence, the correct option is C) the wave is a mechanical wave, and D) the wave could be transmitting sound.
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Using a box covered with graph paper allows you to simulate which aspect of a car crash?
Answer:
a computer modeling
Explanation:
5 points
What did Alfred Wegener think happens during Continental Drift?
A. Continents move
B. The mantle warms
C. Convection Stops
D. Continents freeze
Answer:
Continents move
Explanation:
A tugboat is pulling a barge into a harbor. The barge is exerting a force of 3000 N against the tugboat. Which force would most likely allow the tugboat to move the barge into the harbor? –4500 N –2500 N 2500 N 4500 N
Answer:
the correct one is F’= 4500 N
Explanation:
To solve this problem we must use Newton's second law
where F₁ is the force of the barge F₁ = 3000N and the force of the tugboat is F '
F '- F₁ = m a
we substitute
F '- 3000 = m a
the mass is always a positive quantity, therefore if we want the tug to pull the barge
F ’-3000> 0
when you check it, you respect the correct one is F’= 4500 N
Answer:
The answer is -4500 N
Explanation:
I just got it right on the test
What is the difference between revolution and rotation, in terms of Earth's movement?
In revolution, the earth revolves around the sun. In rotation, the earth rotates about its own axis.
A 10 N force and a 55 N force act on an object in opposite directions. What is the net force on the object ?
Answer:
对不起，我不知道对不起
Explenation:
The net force acting on the body is 45 N
Force is a vector, vectors are quantities that have both magnitude and direction. We must take the direction of the vector into account when computing the net force.
Since the two forces act in opposite directions, the net force is; 55 N - 10 N = 45 N.
The direction of this force is towards the 55 N force which is the larger force.
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What's the Difference Between Weather and Climate?what is the difference between weather and climate
Answer:
weather and climate are different.
weather is when conditions in the atmosphere remain for a short time period.
example: Today's weather is rainy but tomorrow's weather will be sunny.
climate is when the conditions in the atmosphere are daily for a extended period of time at a certain location.
example: The climate in South Korea during winter is cold but sunny.
Difference between Weather and Climate
Weather is the state of the atmosphere over an area at any point of time while climate is the sum total of weather conditions and variations over a large area for a long period of time.Weather conditions change frequently whereas climate does not change so frequently, it remains same year after year.Weather data are recorded at a specific time while climate is recorded for a longer period of time.Example of weather: dry weather, windy weather, etc. Example of climate: tropical monsoon climate, equatorial climate, etc.Note: The first three points are the main differences. The last one is the example.
Hope you could understand.
If you have any query, feel free to ask.
1 HELP
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A box is connected to a spring is extended to 200mm, and it stored 3578J of energy. Find the
force.
Answer:
The force applied to the spring is 35,780 N
Explanation:
Given;
extension of the spring, x = 200 mm = 0.2 m
energy stored in the spring, E = 3578 J
The force applied to the spring is calculated as;
E = ¹/₂Fx
where;
F is the applied force
F = 2E/x
F = ( 2 x 3578) / 0.2
F = 35,780 N
Therefore, the force applied to the spring is 35,780 N
constriction is made in a clinical thermometer why
subject :science (energy)
Answer:
The constriction in the thermometer is to prevent the mercury from dropping back to the bulb when the reading is being taken. It is easier for us to take reading. It prevents the thermometric substance (Mercury or Alcohol) from running back into the bulb.
Explanation:
Hope it is helpful....
Answer:
constriction is made in a clinical thermometer because it prevents the thermometric liquid from running back into the bulb.
The cadmium in the control rods slows down a nuclear fission reaction by absorbing neutrons.
Please select the best answer from the choices provided
T
F
answer:
true
explanation:
cadmium is used during controlled reaction to produce energycredits: https://brainly.in/question/6969690Answer:
True!
Explanation:
cadmium is being used during controlled reaction which creates the energy!
I took this test! :3
100%
Look carefully at the diagram below, which shows two cells connected in series. What will the reading on the ammeter be?
Enter your answer as a number
Submit
1.5v
1.5v
Answer:
The reading on the ammeter is 0 ampere
Explanation:
When two or more voltage sources are arranged in series as shown in the diagram, the resultant voltage is given by the sum of the voltages by taking into consideration the direction of the polarities of the voltage sources which can be either series aiding voltage source configuration or series opposing voltage source configuration
In the series aiding voltage source configuration, the positive terminal of one voltage source is connected to the negative terminal of the next voltage source such that the current flows in the same direction in both sources of the voltage in the circuit and the resultant voltage source is given by adding the individual voltage sources together
However, in the series opposing voltage source configuration, the positive terminal of one voltage source is connected to the positive terminal of the next voltage source such that the current flows in opposite direction in both voltage sources and the voltage across the entire voltage sources is given by finding the sum of the differences of the opposing voltage sources
The arrangement of the voltage sources in the question is one of a series opposing voltage configuration and the voltage across both voltage sources is given by subtracting one (usually the smaller voltage source) from the other as follows;
[tex]V_{(series \ opposing)}[/tex] = V₁ - V₂
Where;
V₁ = The voltage of one (usually the larger) of the voltage source = 1.5 V
V₂ = The voltage of the other voltage source = 1.5 V
Therefore;
[tex]V_{(series \ opposing)}[/tex] = 1.5 V - 1.5 V = 0 V
The reading on the ammeter = The current in the circuit, 'I', which is given as follows;
V = I·R
∴ I = V/R = 0/R = 0
I = 0 A (ampere)
The reading on the ammeter = I = 0 A (Current cannot flow without the presence of a voltage).
Why is physical activity important?
O It helps keep you healthy.
It helps control your weight
It helps imcove your balance and coordination
All of the Above
at least one activity you can enjoy to help you get your 60 min
Answer:
All of the Above
walking
Where is a storm surge located, in relation to the storm?
Answer:
Storm surge is the additional water, above the normal tidal ocean water, caused by the wind and low pressure of a hurricane. It is added to whatever the tide happens to be when the storm hits. If the storm hits at high tide then it’s X feet above the high tide. Tides fluctuates based upon the time of the year and the cycle of the moon.
Explanation:
Answer:
Storm surge is the additional water, above the normal tidal ocean water, caused by the wind and low pressure of a hurricane. It is added to whatever the tide happens to be when the storm hits. If the storm hits at high tide then it’s X feet above the high tide. Tides fluctuates based upon the time of the year and the cycle of the moon.
Explanation:
5.0 kg, with a bullet of mass 0.1 kg. The target was mounted on
low-friction wheels and as the bullet struck the target, the target with
bullet embedded bullet sped off with a velocity of 6.0 ms.
Calculate the velocity of the bullet just before it hit the stationary
target.
Answer:
306 m/s
Explanation:
Law of conservation of momentum
m1v1 + m2v2 = (m1+m2)vf
m1 is the bullet's mass so it is 0.1 kg
v1 is what we're trying to solve
m2 is the target's mass so it is 5.0 kg
v2 is the targets velocity, and since it was stationary, its velocity is zero
vf is the velocity after the target is struck by the bullet, so it is 6.0 m/s
plugging in, we get
(0.1 kg)(v1) + (5.0 kg)(0 m/s) = (0.1 kg + 5.0 kg)(6.0 m/s)
(0.1)(v1) + 0 = 30.6
(0.1)(v1) = 30.6
v1 = 306 m/s
The initial velocity of the bullet can be determined from the total momentum of the system. The velocity of the bullet was 306 m/s.
What is momentum ?Momentum of a body is the product of its mass and velocity. For a collision, the momentum before and after collision will be the same for the colliding system.
Let m1 and m2 be the masses and u be the initial velocity and v is the final velocity.
then, m1 u1 + m2 u2 = m1 v1 + m2 v2.
Given m1 = 5 kg
m2 = 0.1 kg
The velocity of the combined mass v = 6 m/s.
The momentum of the target is zero since it was stationary.
(0.1 × u1) = (0.1 + 5)6 m/s
(0.1 × u1) = 30.6 m/s
then u1 = 30.6/0.1 = 306 m/s
Therefore, the velocity of the bullet before hitting was 306 m/s.
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Una fuente luminosa de 75 W consume 75W de potencia electrica. Suponga que toda la energía se transforma en luz emitida de 600 nm de longitud de onda. a) Calcule la frecuencia de luz emitida b) ¿Cuántos fotones por segundo emite la fuente? C) ¿Son iguales las respuestas de de los incisos a) y b)?
Answer:
a) La frecuencia de la luz emitida es 5,0 × 10¹⁴ Hz
b) El número de fotones por segundo que emite la fuente es 2.26380924 × 10²⁰ fotones
c) Las respuestas del inciso a) yb) son diferentes
Explanation:
Los parámetros dados son;
La potencia de la fuente de luz, P = 75 W
La energía consumida cada segundo por la fuente de luz, E = 75 J
La longitud de onda de la luz emitida, λ = 600 nm
a) La relación entre la energía y la frecuencia de la luz se da a continuación;
υ = c/λ
E = n·h·υ
[tex]E = \dfrac{h \times c}{\lambda}[/tex]
Dónde;
E = La energía consumida por segundo = 75 J
h = constante de Planck ≈ 6.626 × 10⁻³⁴ J · s
υ = La frecuencia de la luz
λ = La longitud de onda de la luz = 600 nm
c = La velocidad de la luz, c = 3.0 × 10⁸ m / s
Por lo tanto, tenemos;
υ = c / λ = 3,0 × 10⁸ m / s / (600 nm) = 5,0 × 10¹⁴ Hz
∴ La frecuencia de la luz emitida, υ = 5.0 × 10¹⁴ Hz
b) El número de fotones por segundo que emite la fuente, 'n', se da como sigue;
n = E / (h · υ) = 75 J / (6.626 × 10⁻³⁴ J · s × 5.0 × 10¹⁴ Hz) = 2.26380924 × 10²⁰
El número de fotones por segundo que emite la fuente = n = 2.26380924 × 10²⁰ fotones
c) Las respuestas del inciso a) yb) son diferentes
5.0 × 10¹⁴ Hz ≠ 2.26380924 × 10²⁰ fotones.
Which correctly describes have any giveaway on the electromagnetic spectrum depends on the wavelength and frequency
Answer:
c = λ f
Explanation:
In the electromagnetic spectrum, the wavelength and frequency of a specific radiation are related to the speed of the wave, which in this case the speed of light
c = λ f
where c is the speed of light, λ the wavelength and f the frequency of radiation
(c) What would the angle of reflection be if the incident ray
was 40° from the reflecting mirror surface?
Answer:
So, if a wave hits a mirror at an angle of 36°, it will be reflected at the same angle (36°). ... An incident ray of light hits a plane mirror at an angle and is reflected back off it. The angle of reflection is equal to the angle of incidence. Both angles are measured from the normal.
Explanation:
Plzzzz help me!! Plz don’t guess, than you!!
Answer:
The answer is W
Which type of information about rattlesnakes does the bar graph above show?
Answer:
Variation
Explanation:
What does the formula "F=m xa" mean?
Answer:
Force = Mass x Acceleration
Explanation:
A car of mass 150 kg is riding down at constant velocity What is the friction force?
Answer:
I think it's b
Explanation:
friction is the opposite direction of the object do it's definitely left something
A force that tries to slow things That are moving through air
Answer:
A force that tries to slow things down that are moving through air. It is a type of friction. Air resistance and water resistance are both sometimes called drag.
please help me answer this
Answer:
W>R...............
Explanation:
.........................
Yes