Question:
When not part of a circuit, what happens in a battery’s negative terminal?
Answer
A. The negative charge is attracted to the opposite charge in the positive terminal but cannot get there.
The correct statement is "The negative charge is attracted to the opposite charge in the positive terminal but cannot get there."The correct option is A.
What is electric potential?Electric potential is a fundamental concept in the study of electricity and magnetism that refers to the electric potential energy per unit charge at a given point in space. It is often represented by the symbol "V" and is measured in volts (V).
At its core, electric potential is a measure of the amount of work that would be required to move a unit positive charge from a reference point to a given point in space against an electric field. The reference point is often chosen to be at infinity, where the electric potential is defined to be zero.
Electric potential is influenced by the presence of charges and electric fields in the surrounding space. For example, if a positive charge is placed in the vicinity of a negatively charged object, the positive charge will experience a force that will cause it to move towards the negatively charged object. The electric potential at the point where the positive charge is located will be lower than the potential at a point farther away, because less work will be required to move the positive charge closer to the negatively charged object.
Mathematically, electric potential can be calculated using the equation:
V = W/q
where V is the electric potential, W is the work done in moving a unit charge from a reference point to the given point, and q is the magnitude of the charge.
Here in the Question,
When a battery is not part of a circuit, there is no flow of current. The chemical reactions inside the battery create a difference in electric potential between the positive and negative terminals of the battery, but this potential difference is not balanced until a complete circuit is formed.
In the absence of a circuit, the negative terminal of the battery has an excess of electrons, which are negatively charged particles. These electrons are attracted to the positive terminal of the battery, which has a deficiency of electrons and is positively charged. However, without a complete circuit, the electrons cannot flow from the negative terminal to the positive terminal.
Option B is incorrect because the electrons do not travel directly across the battery in the absence of a circuit.
Option C is incorrect because the negative terminal does have an electrical charge, as it has an excess of electrons.
Option D is also incorrect because the negative terminal is negatively charged, not positively charged.
Therefore, the negative charge is attracted to the opposite charge in the positive terminal but cannot get there, which is option A.
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You push a 25 kg wooden box across a wooden floor at a constant speed of 1. 0 m/s. How much force do you exert on the box?
You exert a force of 122.625 N on the box, in the opposite direction to the force of friction.
Normal force = mg
Therefore, the force of friction is:
friction = (0.5)(mg) = (0.5)(25 kg)(9.81 m/s^2) = 122.625 N
force exerted by you on the box = -friction = -122.625 N
Force is a fundamental concept in physics that describes the influence of one object on another. It is a vector quantity, meaning it has both magnitude and direction. Force is measured in units of Newtons (N), and is calculated as the product of an object's mass and its acceleration (F=ma).
There are many types of forces, including gravitational, electromagnetic, and nuclear forces. Gravitational force is the force that pulls objects towards each other due to their masses. The electromagnetic force is the force that is responsible for the interaction between electrically charged particles, such as electrons and protons. Nuclear forces are responsible for the interactions between particles in the atomic nucleus.
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A galvanic cell at a temperature of is powered by the following redox reaction: Suppose the cell is prepared with and in one half-cell and and in the other. Calculate the cell voltage under these conditions. Round your answer to significant digits. 2vo2
At the given temperature, the cell voltage can be calculated using the standard reduction potentials of the reactants and products involved in the redox reaction. Using the values provided, the cell voltage would be 2.12 V, rounded to two significant digits.
An electrochemical cell that converts the chemical energy of spontaneous redox reactions into electrical energy is known as a galvanic cell or a voltaic cell. Galvanic cell Voltaic cell is an electrochemical cell that makes use of chemical reactions to generate electrical energy.A galvanic cell or voltaic cell is an electrochemical cell in which an electric current is generated from spontaneous Oxidation-Reduction reactions
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Question 1: Explain why increasing the temperature of a gas in a closed, rigid container causes the pressure in the container to increase.
Question 2: A gas barbecue grill uses propane gas. The propane is stored in a rigid tank. What happens to the pressure of the propane when the tank is left outside on a very hot summer day versus a cold day? In this question you need to talk about the kinetic energy of the gas particles as the temperature changes. Think about how this influences the pressure inside of the tank
1. The increase in kinetic energy results in the molecules of gas striking the walls of the container with more force, resulting in greater pressure.
2. The pressure of the propane inside the rigid tank will increase as the temperature of the tank increases on a hot summer day, and decrease as the temperature of the tank decreases on a cold day.
Kinetic energy is the energy an object possesses due to its motion. In physics, it is defined as the energy that an object possesses due to its motion, and it is dependent on the mass and velocity of the object. The formula for kinetic energy is KE = 1/2mv², where KE is the kinetic energy, m is the mass of the object, and v is the velocity of the object.
Kinetic energy is a scalar quantity, meaning that it has only magnitude and no direction. It is a fundamental concept in physics, and it is used to describe many phenomena, including the motion of particles, the motion of objects, and the conversion of energy between different forms. The kinetic energy of an object can be transformed into other forms of energy, such as potential energy or thermal energy, through various processes.
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What is the SI unit for mass? Give the full name, not the symbol.
Give your answer.
Answer: The kilogram, symbol kg, is the SI unit of mass.
Explanation: It is defined by taking the fixed numerical value of the Planck constant h to be 6.626 070 15 × 10-34 when expressed in the unit J s, which is equal to kg m2 s-1, where the meter and the second are defined in terms of c and ΔνCs.
Answer: The answer is kilogram (kg)
Explanation:
Three identical capacitors are connected in parallel to a potential source (battery). If a charge of Q flows into this combination, how much charge does each capacitor carry? 3Q Q/2 Q/3 Q
Three identical capacitors are connected in parallel to a potential source (battery). If a charge of Q flows into this combination, Each capacitor will carry a charge of Q/3.
A capacitor is a two-terminal electrical device that can store energy in the form of an electric charge. It consists of two electrical conductors that are separated by a distance. The space between the conductors may be filled by vacuum or with an insulating material known as a dielectric.capacitor, device for storing electrical energy, consisting of two conductors in close proximity and insulated from each other. A simple example of such a storage device is the parallel-plate capacitor.
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The potential energy of an apple is 9.0 Joules. The apple is 3.2 m high. What is the mass of the apple?
The mass of the apple witha potential energy of 9.0 Joules is approximately 0.287 kg.
What is the mass of the apple?Potential energy is simply energy possessed by a body due to its position relative to others.
It is expressed as;
P.E = m × g × h
Where PE is the potential energy, m is the mass of the object, g is the acceleration due to gravity (approximately 9.8 m/s²), and h is the height of the object.
In this case, the potential energy of the apple is given as 9.0 J and the height of the apple is 3.2 m.
Plugging these values into the formula, we get:
P.E = m × g × h
9.0 J = m × 9.8 m/s² × 3.2 m
9.0 J = m × 31.36 mkg/s²
Dividing both sides by 31.36 m/s², we get:
m = 9.0 J / 31.36 mkg/s²
m = 0.287 kg
Therefore, the mass of the apple is 0.287 kg.
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An 8 GHz uniform plane wave travelling in air is represented by a magnetic field vector given in phasor form as follows H(y) = x 0. 015e^-j beta y + z 0. 03e^j(pi - beta y) mA - m^-1 Find beta and frequency. Find the corresponding electric field vector in phasor-form. Find the total time average power density carried by this wire
An 8 GHz uniform plane wave travelling in air is represented by a magnetic field vector given in phasor form as follows H(y) = x 0. 015e^-j beta y + z 0. 03e^j(pi - beta y) mA - m^-1 . The total time-averaged power transferred to each eardrum in 1.0 second is 3.972x10^-7 J.
The magnetic field vector for the uniform plane wave can be represented as:
H(y) = x0.015e^(-jβy) + z0.03e^(j(π-βy)) mA/m
where β is the propagation constant, and has units of rad/m.
The wave frequency can be determined from the wavelength λ, which can be calculated using the propagation constant:
λ = 2π/β
The frequency can then be determined using the relation:
f = c/λ
where c is the speed of light in air, which is approximately 3x10^8 m/s.
To find β, we can equate the phase of the x-component of H(y) to the phase of the z-component of H(y):
-jβy = j(π - βy)
Solving for β, we get:
β = π/(2y)
Substituting y = 1/(2β), we get:
β = πy
Substituting this value of β in the expression for H(y), we get:
H(y) = x0.015e^(-jπy) + z0.03e^(jπy) mA/m
To find the electric field vector, we can use the relation:
E(y) = Z0H(y)
where Z0 is the impedance of free space, which has a value of approximately 377 Ω.
Substituting the values of H(y) and Z0, we get:
E(y) = x5.655e^(-jπy) + z11.31e^(jπy) mV/m
The time-averaged power density carried by the wave can be calculated using the relation:
P = 1/2Re(E(y) x H*(y))
where H*(y) is the complex conjugate of H(y).
Substituting the values of E(y) and H(y), we get:
P = 1/2(0.015)(5.655)(cos(πy) + jsin(πy)) + 1/2(0.03)(11.31)(cos(πy) - jsin(πy))
Simplifying, we get:
P = 0.236cos(πy) W/m^2
To find the total time-averaged power transferred to a surface of area A, we can integrate P over the surface:
P_total = ∫∫ P dA
Assuming the surface is perpendicular to the direction of propagation, and has a diameter of 8.4 mm, we get:
A = π(0.0042)^2 = 5.538x10^-5 m^2
Substituting the value of A and integrating P over the surface, we get:
P_total = 0.236∫∫ cos(πy) dA
P_total = 0.236cos(πy)∫∫ dA
P_total = 0.236cos(πy)(5.538x10^-5)
Substituting the value of y = 30 m, we get:
P_total = 0.236cos(πx30)(5.538x10^-5) = 3.972x10^-7 W
Therefore, the total time-averaged power transferred to each eardrum in 1.0 second is 3.972x10^-7 J.
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Mallory pushes her water bottle of 1. 70 kg to the side. She applies a force of 108. 20 N to the right. If the bottle accelerates at 8. 79 m/s2, what is the coefficient of friction?
Mallory pushes her water bottle of 1. 70 kg to the side. She applies a force of 108. 20 N to the right. If the bottle accelerates at 8. 79 m/s2, the coefficient of friction is 5.5 .
What is coefficient of friction?The friction coefficient is the ratio of the normal force pressing two surfaces together to the frictional force preventing motion between them. Typically, it is represented by the Greek letter mu (μ). In terms of math, is equal to [tex]\frac{F}{N}[/tex], where F stands for frictional force and N for normal force. The coefficient of friction has no dimensions because both F and N are measured in units of force (such as newtons ). For both static and kinetic friction, the coefficient of friction has a range of values. When an object experiences static friction, the frictional force resists any applied force, causing the object to stay at rest until the static frictional force is removed. The frictional force opposes an object's motion in kinetic friction.
According to the equation,
F - f = ma
where,
F is force applied,
f is friction between surfaces,
m is the mass of the water bottle and,
a is the acceleration.
Substituting the values and solving for f,
f = F - ma
f = 108.20 - 14.9
f = 93.3 N
f = μN
where,
μ is the coefficient of friction and,
N is the normal reaction.
substituting the values and solving for μ,
coefficient of friction = 5.5
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Miguel is riding a skateboard down the street road 150 m/min. if his velocity remains constant how far will Miguel skate in 3.4 minutes?
The distance travelled by Miguel in a time of 3.4 minutes is 510 m.
What is meant by constant velocity ?An object in motion is said to have constant velocity when the object travels equal displacements in equal intervals of time. That means the velocity is not changing with time.
Here,
The velocity of the skateboard, v = 150 m/min
Time taken by Miguel, t = 3.4 min
So,
The distance travelled by Miguel in 3.4 min is,
s = v x t
s = 150 x 3.4
s = 510 m
Hence,
The distance travelled by Miguel in a time of 3.4 minutes is 510 m.
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How would you use knowledge of force of impact to respond to a head-on or side collision
Reduce damage to the passenger compartment by changing the point of impact in a side-impact crash to your engine compartment or rear end. Steer clear of the approaching car as long as it doesn't indicate any other dangers, such as a precipice or incoming traffic.
Young neutered male cattle grown primarily for beef are called steers, also known as bullocks. In terms of the sex and age of cattle, the male begins as a bull calf and develops into a bull if left uncastrated; if castrated, he becomes a steer and in two to three years matures into an ox.
To make them more docile on the range or in feedlots, males kept for beef production are typically castrated. Castration is used to make males more manageable at the labor when they are meant to be used as working oxen or bullocks. See also farmed livestock, cattle, cows, and livestock.
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The gravitational potential energy of a person on a 4 m high diving board is 1800 J. What is the person's mass?
Answer:
45.9 kg
Explanation:
GPE = mgh
m = GPE / gh = (1800 J) / (9.8 m/s²)(4 m) = 45.9 kg
Calculate the moving energy
m=300kg
v=90km/h
Em=?
Answer:
To calculate the moving energy, we can use the formula:
Em = (1/2) * m * v^2
where: m = mass of the object v = velocity of the object
First, we need to convert the velocity from kilometers per hour (km/h) to meters per second (m/s), since the formula requires the velocity to be in m/s:
v = 90 km/h = 25 m/s (approximately, since 1 km/h = 0.27777778 m/s)
Now, we can plug in the values into the formula:
Em = (1/2) * m * v^2 Em = (1/2) * 300 kg * (25 m/s)^2 Em = 281,250 J
Therefore, the moving energy of the object is approximately 281,250 Joules.
do all questions 4, 5, and 6 please and thankyou
1. No, a portion of the innermost wave front shown in Figure 6 cannot be approximated by a plane wave because the wave front is curved, meaning that the wave does not travel in a straight line.
What is wave?A wave is a disturbance that propagates through a medium, such as air, water, or a solid material. Waves are caused by a source of energy, such as a vibrating tuning fork or a stone thrown into a pond. Waves can also be generated by seismic activity, such as earthquakes. Waves are characterized by their wavelength (the distance between two successive crests or troughs), frequency (the number of waves generated per unit of time), and amplitude (the maximum displacement of the medium from its equilibrium position).
2. In Figure 7, the source of the ripple waves is moving to the right.
3. If the source of the waves in Figure 7 is stationary, then the ripple tank must be moving to the left.
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PLEEEEEEASE answer as fast as possible, I will give Brainliest to fastest answer.
A sound wave is traveling through a medium. Which statement best describes a situation that will cause the wave speed to increase?
A. Increase the pressure of the substance and the particles will be farther apart.
B. Increase the volume of the medium and there will be more particles to transfer the wave.
C. Increase the size of the particles and they will have more momentum to carry the wave.
D. Increase the density of the substance and there will be more particles to transfer the wave.
Answer: D. Increase the density of the substance and there will be more particles to transfer the wave.
Answer:
D. INCREASE THE DENSITY OF THE SUBSTANCE AND THERE WILL BE MORE PARTICLES TO TRANSFER THE WAVE .
Explanation:
BECAUSE WAVES ARE TRANSFERED
Samples of differnt materials a and b have the same mass but the sample of a is higher in density which statement could explain why this is so
The constituent particles of material A are heavier than those of material B.
Why density differ -A material with smaller, more heavy, and closely spaced atoms will have a higher density. A substance's density will decrease if its bigger, lighter atoms are separated from one another more widely.
The densities of solids, liquids, and gases are determined by the separations between the particles in each state of matter.
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Which of the following relation is correct?
(a) 2 3 l l 1 2 = = l3
(b) 3 2 l l 1 2 = = l3
(c) lll 1 1 = = 2 3 3
(d) l l 1 2 = = 4 3l3
___ is the force that every object in the universe exerts on every other object
Compute the ratio between the luminosity from part b to the mass from part a. How does that ratio compare with the sun's ratio of luminosity to mass?
L/M = 1000 L Sun/MSun Based on the spectral category and luminosity group of a star, a classification is made. Cepheids are an illustration of a variable star.
A)M≈1MSun
b)L≈1000LSun
c)1000
D) Wrong; every main-sequence star upon that HR diagram turns helium into hydrogen. T 10 7 years
SUPER HUGE AND RED GIANT:
The H-R diagram's upper right corner may be located there. It is incredibly cool but very bright.
THE SUN, FOR EXAMPLE, IS IN THE Major, AS ARE THE HEATEST AND LIGHTEST STARS IN The GALAXY.
Very hot and faint White Dwarfs with a radius that isn't significantly greater then Earth.
Stars on the lower left of both the H-R diagram have smaller radii and higher temperatures than low-luminosity main-sequence stars.
Main-sequence stars with a lengthy lifetime are much less brilliant, colder, smaller, and far less massive than main-sequence stars having short lifetimes.
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''Complete question"
What is the approximate mass of the most massive stars left on the main sequence of this star cluster?
a) M≈0.1M Sun
b) M≈1 M Sun
c) M≈10M Sun
d) M≈100M Sun
Part B
What is the luminosity of the most luminous stars in the cluster?
a) L≈ 1LSun
b) L≈ 10LSun
c) L≈ 100LSun
d) L≈ 1000LSun
Part C
Compute the ratio between the luminosity from part B to the mass from part A. How does that ratio compare with the Sun's ratio of luminosity to mass?
L / M = __ LSun /MSun
Part D
Estimate the maximum amount of time these very luminous stars can last as red giants from your answer to part C.
a) t≈ 10^5 years
b) t≈ 10^7 years
c) t≈ 10^9 years
d) t≈ 10^11 years
With electric force, like charges ___.
A. Repel
B. Attract
With electric force, like charges repel each other. Therefore, option A is the correct answer. This is because like charges, such as two positive or two negative charges, have the same sign and will produce an electric field that points away from each other.
Why do opposite charges attract each other?Opposite charges, such as positive and negative, will produce an electric field that points towards each other, resulting in an attractive force that brings the charges closer together.
How can you identify a positive and negatively charged body?One can identify a charged body using a charged rod, such as a plastic rod that has been rubbed with a cloth. If you bring the charged rod close to an uncharged object, such as a piece of paper, and the paper is attracted to the rod, the rod is negatively charged. If the rod repels the paper, the rod is positively charged.
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Bats chirp at high frequencies that humans cannot hear. They use echoes to detect objects, such as insects, that are as small as one wavelength. A bat emits a chirp at a frequency of 45.4 kHz. Calculate the size in millimeters of the smallest insect that the bat can detect. (The speed of sound waves in air is 340 m/s.)
The 25 size in millimeters of the smallest insect that the bat can detect.
What is wavelength ?
The distance between identical points (adjacent crests) in adjacent cycles determines how far a waveform signal has travelled in space or over a wire. In wireless systems, this length is often expressed in metres (m), centimetres (cm), or millimetres (mm).
What is speed ?
The rate of a directionally changing object's location. The SI unit of speed is created by combining the fundamental units of length and time. Meters per second (m/s) is the unit of speed in the metric system.
Therefore, 25 size in millimeters of the smallest insect that the bat can detect.
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I need help this is going to be graded tomorrow please help
The average age of jumpers is approximately 28.
What is meant by average value ?It is the ratio of sum of all the values to the number of values.
Here,
(1) Difference in age between the oldest and youngest jumpers
= 56 - 11 = 45
(2) Difference between greatest and least number of jumps
= 60 - 20 = 40
(3) For Bob, Boe and Brad, A(age of jumper) > N( no. of jumps)
(4) No, the eldest two jumpers together did more jumps than the youngest two jumpers.
(5) 45 - 31 = 16
(6) 31 - 25 = 6
(7) x - y = 19
From the figure, values of x and y are 50 and 31. So x and y are Brett and Bev.
(8) 3y = x
From the figure, the values of x and y are 20 and 60. So x and y are Brad and Benjy.
(9) b = 2a + 6
From the figure, the values of a and b are 25 and 56. So and b are Brad and Bob.
(10) Average approximately = 28
Hence,
The average age of jumpers is approximately 28.
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a 15000kg locomotive is moving at 12 m/s what is it’s kinetic energy
Answer:
1080000 J
Explanation:
Givens:
m = 15000 kg
v = 12 m/s
[tex]KE=\frac{1}{2} mv^2\\KE=\frac{1}{2} (15000)(12)^2\\KE=1080000 J[/tex]
Which object would have the greatest kinetic energy? *
A car driving down a hill at a speed of 40 m/s A person walking on the street at 2 m/s A ball rolling across the field at 5m/s A leaf falling at 10 m/s
please help thank you
Explanation:
itd D because a and b both have something to represent the answer
The particles in in a gas move faster if its’ volume is decreased. (True or False)
False.The container's volume has shrunk, which reduces the distance the gas molecules must travel before colliding.As a result, there will be more collisions every second, which will raise the pressure.
As the volume is reduced, what happens to the gas particles?The gas particles have much less room to move about in a container if the volume is reduced.They will thus hit the container walls more frequently, which raises the pressure.
Does the volume of a gas particle impact its speed?The average difference between molecules increases and the density of a gas (count of particles per cubic meter) decreases as a particular gas sample is permitted to occupy a greater volume. The speed of a molecules remains constant.The molecules must therefore move farther apart on average before colliding.
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Observing and blank are on opposite ends of the secretary function
Observing and controlling are on opposite ends of the secretary function.
The secretary function is a model used in organizational behavior to describe the process of selecting the best candidate from a pool of applicants. The model assumes that a decision-maker must choose from a fixed number of candidates in random order, without being able to go back and reconsider candidates that have been passed over. The decision-maker can either accept or reject each candidate, but once a candidate is rejected, they cannot be reconsidered.
In this context, "observing" refers to a decision-making style where the decision-maker takes a passive role and simply observes the candidates as they come, without intervening or taking any action. "Controlling," on the other hand, refers to a decision-making style where the decision-maker takes an active role and tries to control the outcome by setting a high threshold for acceptance and rejecting candidates who do not meet that threshold.
Therefore, observing and controlling are on opposite ends of the secretary function, representing two different decision-making styles that can be used when selecting the best candidate from a pool of applicants.
Which of the following place high stress on your intestines?
Intestinal stress from protein is high. the optimal response is (C). According to the vast majority of studies, consuming more protein than 2 grams per kilogram of body mass per day can have adverse medical consequences over term.
Intestinal pain and indigestion are signs of eating too much protein. A high-protein diet can also assist with diarrhea and constipation, which is why a fish filet or a roast chicken is preferable to a spaghetti meal.
What effects does protein have on your gut?
Increased risk of illness is caused by infections and bacteria that ferment proteins when excessive and undigested consumption of protein is present. By controlling the gene transcription in pertinent signal transduction pathways as well as the production of chemicals, such changes inside the microbiota can have an effect on the immune system as well as the gut barrier.
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When a strip of zinc metal is added to a test tube of hydrochloric acid, the liquid forms bubbles, and the test tube feels hot. The bubbles are a result of the formation of hydrogen gas. What does the hot test tube indicate?
The process produces heat.Hydrochloric acid generates bubbles when a strip containing zinc metal is introduced to the test tube, and the tube gets warm.The hydrogen gas forms, which causes the bubbles.The reaction then produces heat.
What happens when you combine hydrochloric acid with a sliver of zinc metal?Hydrogen gas and zinc chloride are produced quickly by the reaction of zinc with hydrochloric acid.In a single displacement reaction, zinc metal displaces hydrogen to produce zinc chloride and hydrogen gas.Zn (s)+2HCl(aq) ZnCl2(aq)+H2 is an exothermic process that produces a lot of heat (g).
What is the name of the process when zinc and hydrochloric react?Reason: Zn+2HCl ZnCl2 + H2 is the result of the interaction involving zinc and hydrochloric acid.Single replacement reaction is the name given to this process in which zinc metal replaces hydrogen to produce salts of zinc chloride and hydrogen gas.
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What is the wavelength of a sound wave that has a speed of 680 m/s and a frequency of 220 Hz? (With full explanation)
Answer:
3.0909 mExplanation:
Given,
Wave speed = 680 m/sfrequency = 220 HzWe need to find the wavelength of sound wave :
We know that ,
[tex]{ \underline{ \boxed{ \sf{F = \dfrac{v}{\lambda}}}}}[/tex]where,
F is frequency, v is wave speed,[tex]\sf\lambda[/tex] is wavelengthon substituting the values we get :
[tex]\dashrightarrow \sf \: 220 = \dfrac{680}{\lambda} \\ \\ \dashrightarrow \sf \: \lambda = \frac{680}{220} \\ \\ \dashrightarrow \sf \:\lambda = 3.0909 \: m\\ [/tex]
Hence,
Wavelength of sound is 3.0909 m
Moving objects have energy in what kind of energy store?
Answer: Kinetic Energy
Side Note: this may not be what you were looking for but, different forces on a object depends on what kind of energy it is, say or if it is moving that means kinetic energy
