Answers
A GFCI measures the amount of current that flows from hot to neutral.
What is circuit ?
A circuit is a closed channel in electronics that permits electricity to flow from one place to another. It may contain a variety of electrical components such as transistors, resistors, and capacitors, but the flow is not hampered by a gap or break in the circuit.
A simple circuit is illustrated using a flashlight. When the switch is turned off, the circuit is not closed, which means that no electrical current flows from the batteries to the flashlight's bulb. When you turn the switch on, a piece of metal in the flashlight physically plugs the circuit gap. Electricity goes from the batteries to the bulb, causing it to light up.
A GFCI measures the amount of current that flows from hot to neutral. If there is an imbalance, the circuit will trip. The GFCI detects mismatches as tiny as 4 or 5 milliamps and can respond in as little as one-thirtieth of a second.
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Related Questions
A cannonball is shot (from ground level) with an initial horizontal velocity of 20 m/s and an initial vertical velocity of 30 m/s. What's the maximum height reached by the cannonball
Answers
Answer:
maximum height = 46m
Explanation:
Vx = 20m/s
Vy = 30 m/s
gravity = 9.8 m/s/s
final velocity = initial velocity - gravity • time
0 = 30m/s - 9.8m/s/s • time
subtract 30m/s from both sides
-30m/s = - 9.8m/s/s • time
divide both sides by -9.8m/s/s
3.06 s = time
height = initial velocity • time - 1/2 • gravity • time^2
height = 30m/s • 3.06s - 1/2 • 9.8m/s/s • 3.06s ^2
height = 46m
the maximum height is equal to 46m
4. A car moves round a circular track at 120 mph. Give the average velocity of the car.
Explain your answer.
Answers
The average velocity of a car that is moving round a circular track at 120 mph is given as 0
How to determine the average velocityWhen a car is moving around a given moves round a circular track at 120 mph, it would have a direction that is constantly changing while it is moving around the track.
After the full lap has been completed, the car is going to have to go back to its starting point. Hence the displacement is 0, average velocity is 0. This is regardless of its speed. Hnece the velocity is 0
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What are the types of contexts that are most influential in early childhood? How does this shift when children start school, and why does the relative importance of different contexts shift as children age?
Answers
Neighborhood, familial, and sociodemographic factors make up the three contextual factors.
Developmental theory and research emphasize a variety of contexts for children's development, including families, peers, schools, and neighborhoods. 1 These contexts are distinct from the other child development and well-being categories and should be assessed separately. Knowing whether or not a child is overweight or exercises enough, for example, can help describe the physical health of the child in a meaningful way.
Children from homes where the parents may or may not exercise frequently or actively encourage their children to exercise represent family situations that affect children's development and welfare. The family's level of money has an impact on the child's access to food as well (socio-demographic context).
In early life, gender is one of the clearest and most reliable signs that allows us to categorize our social environment. In the early stages of development, a person's ethnic origin does not provide the infant with any information beyond his perceptible characteristics; however, age can be a reliable indicator of expertise, competence, reliance, and authority, and gender can provide accurate information about potential areas of interest. Therefore, unlike someone who just shares the same hue, infants and children may have expectations regarding shared knowledge with someone who has or does not have the same competence (age) and interest (gender).
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Calculate the volume of a parallelepiped with sides give as a = ( 7,2 , 4 ) , b = ( 4,7 , 6 ) and c = ( 3,4 , 7 )
Answers
The volume of the parallelepiped is 83 cubic units.
The volume of a parallelepiped with sides give as a = ( 7,2 ,4 ) , b = ( 4,7 ,6 ) and c = ( 3,4 ,7 ).
The volume of a parallelepiped with adjacent sides a, b, and c is given by the scalar triple product (a × b) · c.
First, need to calculate the cross product of vectors a and b
a × b =
\(\left[\begin{array}{ccc}i &j&k\\7&2&4\\4&7&6\end{array}\right]\)
= (2 × 6 - 4 × 7) i - (7 × 6 - 4 × 4) j + (7 × 7 - 2 × 4) k
= -8 i - 26 j + 45 k
Now, calculate the scalar triple product
(a × b) · c = (-8)(3) + (-26)(4) + (45)(7) = 83
Therefore, the volume of the parallelepiped is 83 cubic units.
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The viscid silk produced by the European garden spider (Araneus diadematus) has a resilience of 0.35. If 10.0 J of work are done on the silk to stretch it out, how many Joules of work are released as thermal energy as it relaxes?
Answers
Answer: The energy released as thermal energy is 6.5 J
Explanation:
Energy stored by the spider when it relaxes is given by:
\(E_o=\text{Resilience}\times \text{Work}\)
We are given:
Resilience = 0.35
Work done = 10.0 J
Putting values in above equation, we get:
\(E_o=0.35\times 10\\\\E_o=3.5J\)
Energy released at thermal energy is the difference between the work done and the energy it takes to relaxes, which is given by the equation:
\(E_T=\text{Work done}-E_o\)
Putting values in above equation, we get:
\(E_T=(10-3.5)=6.5J\)
Hence, the energy released as thermal energy is 6.5 J
The energy released as thermal energy when 10 J of work is done to stretch silk will be 6.5 J
What is thermal energy?Thermal energy refers to the energy contained within a system that is responsible for its temperature. Heat is the flow of thermal energy.
Energy stored by the spider when it relaxes is given by:
\(\rm E_o=Resilience \ \times Work\)
We are given:
Resilience = 0.35
Work done = 10.0 J
Putting values in above equation, we get:
\(\rm E_o=0.35\times 10\)
\(E_o=3.5\ J\)
Energy released at thermal energy is the difference between the work done and the energy it takes to relaxes, which is given by the equation:
\(E_T=\rm Work done -E_o\)
Putting values in above equation, we get:
\(E_T=(10-3.5)=6.5\ J\)
Hence, the energy released as thermal energy is 6.5 J
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A man is standing away from the School
Building at a distance of
300m . He claps his hands and hears an echo calculate the time interval of him hearing his echo
Answers
The time interval between the man clapping and hearing his echo is approximately 1.75 seconds.
What do you mean by echo?An echo is a repetition or reflection of a sound or signal. It can be caused by sound waves bouncing off a surface, signal interference, or the repetition of a message in communication.
The speed of sound in air at room temperature is approximately 343 meters per second. When a person claps, the sound waves propagate outward in all directions and reach the school building, where they bounce off and return to the person as an echo. The time it takes for the sound to travel the distance to the building and back to the person is the time interval between the clap and the echo.
To calculate the time interval, we can use the following formula:
time = distance / speed
where distance is the total distance traveled by the sound (twice the distance from the person to the school building), and speed is the speed of sound in air.
distance = 2 x 300m = 600m
speed = 343 m/s
time = 600m / 343 m/s = 1.75 seconds (rounded to two decimal places)
Therefore, the time interval between the man clapping and hearing his echo is approximately 1.75 seconds.
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The following graph of velocity versus time represents that of an automobile that travels in a straight line. From this graph, one can conclude that:
Answers
The true statement is that the acceleration in the first two seconds is 6 m/s^2.
What is acceleration?The term acceleration is defined as the rate of change of velocity with time. The graph as shown is a velocity time graph. The graph shows the changes that occur in the velocity over a given time interval.
Now we have;
Initial velocity = 0 m/s
Final velocity = 12 m/s
Time taken = 2s
Acceleration = 12 - 0/2
= 6 m/s^2
Thus the true statement is that the acceleration in the first two seconds is 6 m/s^2.
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An automobile is traveling on a long, straight highway at a steady 80.0 mi/h when the driver sees a wreck 190 m ahead. At that instant, she applies the brakes (ignore reaction time). Between her and the wreck are two different surfaces. First there is 100 m of ice, where the deceleration is only 1.20 m/s2 . From then on, it is dry concrete, where the deceleration is a more normal 6.80 m/s2 .
a) What was the car’s speed just after leaving the icy portion of the road?
b)What is the total distance her car travels before it comes to a stop?
c)What is the total time it took the car to stop?
Answers
Answer:
a) The car’s speed just after leaving the icy portion of the road is the first part
Explanation:
What happens to the potential energy of atoms that bond?
Answers
Based on the diagram, what is the difference in how economic decisions are made in a mixed economy and a market economy? E.1.2
How Economic Decisions are Made
By the Government,
command
economy
By the Consumers
mixed
economy
market.
economy
O Consumers make all economic decisions in a mixed economy, while the government makes all economic decisions in a market economy.
Government and consumers make economic decisions in a mixed economy, while consumers make economic decisions in a market economy.
Government makes all economic decisions in a mixed economy, while consumers make all economic decisions in a market economy.
O Consumers make economic decisions in a mixed economy, while consumers and government make economic decisions in a market economy.
Answers
Based on the diagram, the correct statement is: Government and consumers make economic decisions in a mixed economy, while consumers make economic decisions in a market economy.
How do we explain?In a mixed economy, economic decisions are made by both the government and consumers.
The government plays a significant role in regulating and influencing economic activities through policies, regulations, and interventions.
In market economy, economic decisions are primarily made by consumers. The market forces of supply and demand dictate the allocation of resources, production levels, and pricing.
The freedom to buy and sell whatever they choose is what ultimately determines how commodities and services are produced and distributed.
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Samir is waiting for a slow reaction to finish. What is the best way to make the reaction go faster?
Question 12 options:
Put it in the fridge where it is cold
Cover it with a blanket so it's dark
Warm it up on the stove
There is nothing you can do to change the speed of the reaction
Answers
In general, option c - warming it up on the stove - is often an effective method to increase the reaction rate.
Increasing the temperature of a reaction generally leads to faster reaction rates. This is because higher temperatures provide more thermal energy to the reactant particles, causing them to move faster and collide more frequently. The increased collision frequency and energy lead to more successful collisions and a higher likelihood of effective molecular interactions, which speeds up the reaction. On the other hand, options a and b - putting it in the fridge where it is cold or covering it with a blanket to make it dark - are unlikely to have a significant effect on the reaction rate. While temperature can influence reaction rates, cooling the reaction or making it dark typically reduces the kinetic energy of the particles, resulting in slower reaction rates. Option d - there is nothing you can do to change the speed of the reaction - is not accurate. The reaction rate can be influenced by various factors such as temperature, concentration, catalysts, and surface area, among others. By manipulating these factors, it is often possible to control and change the speed of a reaction. Hence option c, is correct
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Place these bodies of our solar system in the proper order of formation
Answers
Answer:
solar nebula, the sun, planetesimals, inner planets, and last but not least outer planets
Answer:
Solar nebula, The sun, planetesimals , inner planets, outer planets
Explanation:
How much force required to displace a body through 50cm by doing 25J work on it.
Answers
Answer:
50 N
Explanation:
W = Fd
F = W/d
first convert cm → m: 50 cm x 1 m/cm = 0.50 m
F = (25 J) / (0.50 m) = 50 N
Planets A and B have the same size, mass, and direction of travel, but planet
A is traveling through space at half the speed of planet B. Which statement
correctly explains the weight you would experience on each planet?
A. You would weigh the same on both planets because their masses
and the distance to their centers of gravity are the same.
O B. You would weigh the same on both planets because your mass
would adjust depending on the planet's speed.
O C. You would weigh less on planet B because it is traveling twice as
fast as planet A.
D. You would weigh more on planet B because it is traveling twice as
fast as planet A
Answers
If you cut a permanent magnet into four pieces,
you will have what?
A) four temporary magnets
B) four smaller permanent magnets
C) two north poles and two south poles
D)four objects that are no longer magnets
Answers
you would have C) two north poles and two south poles
The number of hours
of daylight tat a location receives varies depending on how far north or south it is from the
Answers
Answer:
equator
Explanation:
in south & north pole you could have 20+ hours daylight or night, everyday!
A 1000 kg rollercoaster requires a braking force of 8780N from point D to point E in order to stop. Find
a) The Total Mechanical Energy of the rollercoaster at Point A. b) The velocity of the coaster at point A. c)
The velocity of the coaster at point B. d) The highest hill the coaster could have gotten over before point A
with no additional mechanical energy. (Ans. a) 591,100 J b) 2.5 m/s c) 34.4 m/s d) 60.3 m)
Answers
On the rollercoaster:
a) The Total Mechanical Energy at Point A: 591,100 Jb) The velocity of the coaster at Point A: 34.4 m/sc) The velocity of the coaster at Point B: 34.4 m/sd) The highest hill the coaster could have gotten over before Point A with no additional mechanical energy: 60.3 mHow to solve conservation of energy?To solve this problem, apply the principles of conservation of energy. Use the following equations:
a) The Total Mechanical Energy (TME) at any point can be calculated using the formula: TME = Potential Energy + Kinetic Energy.
b) The velocity of the coaster can be calculated using the equation: Kinetic Energy = (1/2)mv², where m = mass of the rollercoaster.
c) The velocity of the coaster at point B can be calculated using the conservation of energy principle. So, equate the Potential Energy + Kinetic Energy at point A to the Potential Energy + Kinetic Energy at point B and solve for velocity at point B.
d) Calculate the height of point A using the formula: Potential Energy = mgh, where m is the mass of the rollercoaster, g is the acceleration due to gravity, and h is the height.
Given:
Mass of rollercoaster (m) = 1000 kg
Braking force (F) = 8780 N
Let's calculate each part of the problem:
a) The Total Mechanical Energy at Point A:
TME = Potential Energy + Kinetic Energy
Since the rollercoaster is at the highest point (A) and it's not moving, the Kinetic Energy is zero.
Potential Energy = mgh
Potential Energy at Point A = (1000 kg)(9.8 m/s²)(h) = TME
TME = 591,100 J
b) The velocity of the coaster at Point A:
Using the Total Mechanical Energy calculated in part a, calculate the velocity using the formula:
TME = (1/2)mv²
591,100 J = (1/2)(1000 kg)(v²)
v² = (2 × 591,100 J) / (1000 kg)
v² = 1182.2 m²/s²
v = √(1182.2) ≈ 34.4 m/s
c) The velocity of the coaster at Point B:
Using the conservation of energy principle, equate the TME at Point A to the TME at Point B:
Potential Energy at Point A + Kinetic Energy at Point A = Potential Energy at Point B + Kinetic Energy at Point B
mgh + (1/2)mv² = mgh' + (1/2)mv'²
Since the coaster starts from rest at Point A, the Kinetic Energy is zero.
mgh = mgh' + 0
gh = gh'
34.4 m/s = √(2 × 9.8 m/s² × h')
h' = (34.4 m/s)² / (2 × 9.8 m/s²) ≈ 60.3 m
d) The highest hill the coaster could have gotten over before Point A with no additional mechanical energy is the height at Point A, is calculated to be approximately 60.3 meters.
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What does it mean for a chemical equation to be balanced?
Answers
Answer:
The number of each type of atom is the same for both the reactants and products.I hope this helps
What is the powder taking the shape of?
The magnetic field
The poles
A snowman
A star
Answers
The powder takes the shape of a magnetic field.
What is the particle shape of powder?Powder morphology is connected to the shape and size of powder particles and is strongly dependent on the manufacturing methods. For example, mechanical alloying/mechanical milling leads to unevenly shaped powder particles, while gas dissipation leads to spherically shaped particles.
Atomized metal powder particles come in two basic particle shapes: those that are almost superbly round called spherical, and those that have lopsided, rounded shapes, called spheroidal.
So we can conclude that Powders are a group of particles of different sizes.
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(PLEASE HELP ITS DUE SOON ILL MARK BRAINLIEST AND 5 STARS & PLEASE SHOW WORK!!)
(And the answer is not 44 I already tried that and it doesn’t start with 4 either)
Answers
Its economics. Its not b. What is it?
Answers
Answer:
A
I say this because exponential growth takes place when a population per Capita growth stays the same
Sally puts on wool socks and rubs her feet on a nylon carpet. How does static electricity build up in Sally?
O When electrons from the wool socks move into the carpet, Sally and her socks gain a negative charge.
O The friction causes electrons from the wool socks to move to Sally, giving Sally a negative charge.
O Electrons from the wool socks move into the carpet, giving Sally and her socks a positive charge.
Electrons from the carpet move into the wool socks, giving Sally and her socks a positive charge.
Answers
When Sally puts on wool socks and rubs her feet on a nylon carpet, static electricity builds up through a process involving the movement of electrons. The friction between the wool socks and the nylon carpet causes electrons from the wool socks to move to the carpet, resulting in Sally and her socks gaining a negative charge.
The correct answer would be the friction causes electrons from the wool socks to move to Sally, giving Sally a negative charge.
The friction between the wool socks and the nylon carpet causes electrons from the wool socks to move to the carpet, resulting in Sally and her socks gaining a negative charge. This is due to the phenomenon known as the triboelectric effect.
The triboelectric effect occurs when two materials come into contact and then separate. During the rubbing process, the atoms in the two materials interact, causing the transfer of electrons between them. In this case, the wool socks have a greater affinity for electrons compared to the nylon carpet. As a result, electrons from the socks are transferred to the carpet, leaving the socks with a positive charge and the carpet with a negative charge.
Sally, wearing the wool socks, experiences an accumulation of excess electrons on her feet, giving her a negative charge. This excess negative charge on her body can lead to static electricity-related phenomena, such as experiencing a shock when touching a metal object or seeing her hair stand on end when near certain surfaces.
It's important to note that the movement of electrons determines the charge distribution during the triboelectric effect. In this scenario, electrons move from the wool socks to the nylon carpet, resulting in Sally and her socks gaining a negative charge.
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100 g of water at 25 °C is poured into an insulating cup. 50 g of ice at 0 °C is added to the water. The water is stirred until the temperature of the water has fallen to 0 °C. 18 g of ice remains unmelted. The specific heat capacity of water is 4.2 J / g °C. Which value does this experiment give for the specific latent heat of fusion of ice?
Answers
The specific latent heat of fusion of ice obtained from this experiment is approximately 583.33 J/g.
To determine the specific latent heat of fusion of ice using the given experiment, we need to consider the energy transferred during the process.First, we need to calculate the energy lost by the water to cool down from 25 °C to 0 °C. The energy lost is given by:
Q1 = m1 * c * ΔT1
Where:
m1 = mass of water = 100 g
c = specific heat capacity of water = 4.2 J/g °C
ΔT1 = change in temperature = (0 °C - 25 °C) = -25 °C
Q1 = 100 g * 4.2 J/g °C * (-25 °C) = -10,500 J
Next, we calculate the energy released by the water to freeze and cool the remaining ice. The energy released is given by:
Q2 = m2 * Lf
Where:
m2 = mass of ice = 18 g
Lf = specific latent heat of fusion of ice (to be determined)
Q2 = 18 g * Lf
Since energy is conserved in the system, the energy lost by the water (Q1) is equal to the energy released by the water (Q2):
-10,500 J = 18 g * Lf
Solving for Lf:
Lf = -10,500 J / 18 g = -583.33 J/g
The negative sign indicates that energy is being released during the process of freezing.
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Two cars are moving in the same direction in parallel lanes along a highway. At some instant, car A is traveling faster than car B. Does that mean the acceleration of A is greater than that of B at that instant
Answers
Answer:
No because they are both parallel lines
Why is it important that scientists have a common language of measurement?
Answers
Answer:
because to make the measurement system same all over the world and make it compareable
This illustration shows two opposing forces pulling on a wagon. Which description best describes how the wagon will move?
10N
30N
The wagon will slow down
The wagon will move to the left.
The wagon will not move because the forces are opposite
The wagon will move to the right.
4 5 6 7 8
9 10 11 12 13
Next
Type here to search
Answers
Answer:
The wagon will move to the right.
Explanation:
From the question given above, the following data were obtained:
Force applied to the left (Fₗ) = 10 N
Force applied to the right (Fᵣ) = 30 N
Direction of the wagon =.?
To determine the direction in which the wagon will move, we shall determine the net force acting on the wagon. This can be obtained as follow:
Force applied to the left (Fₗ) = 10 N
Force applied to the right (Fᵣ) = 30 N
Net force (Fₙ) =?
Fₙ = Fᵣ – Fₗ
Fₙ = 30 – 10
Fₙ = 20 N to the right
From the calculations made above, the net force acting on the wagon is 20 N to the right. Hence the wagon will move to the right.
Which of the following substances is a compound?
O A. hydrogen gas
B. nitrogen gas
O c. table sugar
O D. oxygen gas
Answers
Sucrose is made of three elements carbon hydrogen and oxygen
Table sugar is a compound, it consists of carbon, hydrogen, and oxygen.
Hence, C is the correct answer.
What is the chemical state of matter?The chemical state of matter consists :
ElementCompound andMixturesElement-The substance which contains only one atom and cannot be broken down. Example-Hydrogen.Compound-It is defined as a substance formed when two or more chemical elements are chemically bonded together. The substance can be pure or impure.Mixture-It contains two or more elements or compounds, but they are not chemically combined. Mixtures are of two types :Homogeneous mixture and,Heterogeneous mixtureHence, table sugar is a compound because it is formed by more than 2 chemical elements, and they are chemically bonded together.
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A beam of light, incident on a flat water surface, reflects from the mirror-like surface so that the angle of incidence equals the angle of reflection. The water has waves. Would individual light beams obey the law of reflection in this case?
Answers
Answer:
a protractor
Explanation:
because protractors measure angles
Which statement correctly describes the path that an electrical impulse would take after someone touched a hot pot?
A. The signal travels through the nerve of the hand to the spinal cord and then to the brain.
B. The signal travels through the spinal cord, to the nerve in the hand, and then to the brain.
C. The signal travels from the brain, through the spinal cord, and then to the nerve in the hand.
D. The signal travels to the spinal cord, to the brain, and then to the nerve in the hand.
Please select the best answer from the choices provided.
Answers
Answer:
A. The signal travels through the nerve of the hand to the spinal cord and then to the brain.
Explanation:
(a)
Calculate the force (in N) needed to bring a 900 kg car to rest from a speed of 85.0 km/h in a distance of 110 m (a fairly typical distance for a non-panic stop).
(b)
Suppose instead the car hits a concrete abutment at full speed and is brought to a stop in 2.00 m. Calculate the force exerted on the car and compare it with the force found in part (a).
Answers
f = (m * v^2) / (2 * d)
where:
m = 900 kg (mass of the car)
v = 85.0 km/h = 23.6 m/s (initial velocity of the car)
d = 110 m (stopping distance)
Plugging in the values, we get:
f = (900 kg * (23.6 m/s)^2) / (2 * 110 m)
f = 23095.91 N or 2.31 x 10^4 N
Therefore, the force needed to bring the car to rest from a speed of 85.0 km/h in a distance of 110 m is approximately 23,095.91 N or 23.1 kN.
(b) If the car hits a concrete abutment at full speed and is brought to a stop in 2.00 m, we can calculate the force exerted on the car using the formula:
f = m * a
where:
m = 900 kg (mass of the car)
a = -v^2 / (2 * d) = -(23.6 m/s)^2 / (2 * 2.00 m) = -2793.2 m/s^2 (acceleration of the car)
The negative sign indicates that the acceleration is in the opposite direction to the initial velocity of the car.
Plugging in the values, we get:
f = 900 kg * (-2793.2 m/s^2)
f = -2.51 x 10^6 N or -2.51 MN
Therefore, the force exerted on the car when it hits a concrete abutment at full speed and is brought to a stop in 2.00 m is approximately 2.51 MN (or 2510 kN), which is much greater than the force found in part (a). This is because the stopping distance is much shorter, so the deceleration (and therefore the force) must be much greater to bring the car to a stop in the same amount of time.