In the column, the red (water) substance has a less density than the black (corn syrup) substance.
Explain what density is.The measure of how densely a material is packed together is called density. As the mass per unit volume, it has that definition. Density Numeral: D or The density is calculated using the following formula: = m/V, where m is the object's mass and V is its volume.
The relationship between a substance's mass and the amount of space it occupies is known as its density (volume). The density of a substance is determined by the mass, size, and arrangement of its atoms. Density is calculated by dividing a substance's mass by its volume.
From the image, you can see that the black section is thicker and the red is a little bit light.
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A stone is thrown straight upward and reaches a maximum height of 32.3 m above itslaunch point. What was the initial speed with which the stone was thrown upwards?Answer:m/s
The initial speed = 25.16 m/s
Explanation:The maximum height, H = 32.3 m
The initial speed, u = ?
The formula for the maximum height of a projectile is:
\(H=\frac{u^2}{2g}\)Substitute H = 32.3m and g = 9.8 m/s² into the formula and solve for u
\(\begin{gathered} 32.3=\frac{u^2}{2(9.8)} \\ \\ u^2=32.3(2)(9.8) \\ \\ u^2=633.08 \\ \\ u=\sqrt{633.08} \\ \\ u=25.16\text{ m/s} \end{gathered}\)The initial speed = 25.16 m/s
the current in a 110-mh inductor increases from 0 to 60 ma (steady state). how much energy is stored in the inductor?
The energy stored in the 110-mh inductor where the current increases from 0 to 60 ma (steady state) is 0.000198 joules.
To find the energy stored in the inductor, we can use the formula:
Energy (E) = 0.5 × L × I²
where E is the energy stored, L is the inductance (in henrys), and I is the steady-state current (in amperes).
First, we need to convert the given values to their standard units:
Inductance (L) = 110 mH = 110 × 10^-3 H = 0.110 H
Current (I) = 60 mA = 60 × 10^-3 A = 0.060 A
Now, we can plug these values into the formula:
E = 0.5 × 0.110 × (0.060)²
E = 0.5 × 0.110 × 0.0036
E = 0.000198 J
So, the energy stored in the inductor is 0.000198 joules.
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the mean time between collisions in iron is 5.2×10−15 what electron current is driven through a 2.4- mm -diameter iron wire by a 0.070 v/m electric field? express your answer as a number of electrons per second.
The electron current driven through a 2.4 mm diameter iron wire by a 0.070 v/m electric field is 24.34 * \(10^{18}\) electrons / s
I = n A e \(v_{d}\)
\(v_{d}\) = т e E / m
I = Current
n = Free electron density
A = Area
e = Charge
\(v_{d}\) = Drift velocity
т = Mean time
E = Electric field
m = Mass of charge
т = 5.2 * \(10^{-15}\) s
d = 2.4 mm
r = 1.2 mm = 1.2 * \(10^{-3}\) m
E = 0.07 V / m = 0.07 N / C
e = 1.6 * \(10^{-19}\) C
m = 9.1 * \(10^{-31}\) kg
A = π r²
A = 3.14 * ( 1.2 * \(10^{-3}\) )²
A = 4.52 * \(10^{-6}\) m²
\(v_{d}\) = ( 5.2 * \(10^{-15}\) * 1.6 * \(10^{-19}\) * 0.07 ) / ( 9.1 * \(10^{-31}\) )
\(v_{d}\) = ( 0.58 * \(10^{-34}\) ) / ( 9.1 * \(10^{-31}\) )
\(v_{d}\) = 63.7 * \(10^{-6}\) m / s
n = ( Avogadro's number * Density ) / Atomic mass
Avogadro's number = 6.023 * \(10^{23}\) atoms / mole
Density of copper = 8.92 * 10³ kg / m³
Atomic mass = 63.5 * \(10^{-3}\) kg / mole
n = 8.46 * \(10^{28}\) / m³
I = n A e \(v_{d}\)
I = 8.46 * \(10^{28}\) * 4.52 * \(10^{-6}\) * 1.6 * \(10^{-19}\) * 63.7 * \(10^{-6}\)
I = 3897.34 * \(10^{-3}\)
I = 3.9 A
I = 3.9 * 6.242 * \(10^{18}\) electrons / s
I = 24.34 * \(10^{18}\) electrons / s
Therefore, the electron current driven through the iron wire is 24.34 * \(10^{18}\) electrons / s
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Why is it more difficult to push a sofa across a room with carpet than a room with a wood floor?.
Answer:
because the carpet creates more friction when sliding across which makes it slower while the slickness of the wood makes less friction
What two aspects of a force do scientists measure? Question 2 options: position and size size and stability strength and magnitude magnitude and direction.
The two aspects of a force do scientists need to measure are magnitude and direction.
What is Force?The force is defined as the external effort applied in the form of push or pull to cause the acceleration of a body.
Mathematically it is expressed as the product of mass and acceleration of an object.
Then, the standard expression for the force as per Newton's second law is given as,
F = ma
Here,
m is the mass of the body.
a is the magnitude of the acceleration of the body.
Also, force is a vector quantity that has significance for its magnitude as well as the direction.
So any sort of scientific analysis regarding the force needs its magnitude along with the direction of application.
Thus, we can conclude that the two aspects of a force do scientists need to measure are magnitude and direction.
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It is necessary to coat a glass lens with a nonreflecting layer. If the wavelength of the light in the coating is λ, the best choice is a layer of material having an index of refraction between those of glass and air and a thickness of ___?
The best choice for a non-reflective coating on a glass lens would be a layer of material with an index of refraction between those of glass and air and a thickness of one-quarter the wavelength of the light in the coating (λ/4).
When light passes through a boundary between two media with different refractive indices, some of the light is reflected back and some is transmitted into the second medium. This reflection can be detrimental to the performance of optical systems because it reduces the amount of light that can be transmitted through the system.
To reduce the amount of reflected light, it is often desirable to apply a non-reflective coating to the surface of an optical component, such as a glass lens. A non-reflective coating consists of a thin layer of material with an index of refraction between those of the two media (e.g. glass and air) and a thickness carefully chosen to produce destructive interference of the reflected light waves.
The ideal thickness of the non-reflective coating depends on the wavelength of the light in the coating, as well as the refractive indices of the two media. For a single layer coating, the optimal thickness is typically a quarter of the wavelength of the light in the coating, or λ/4.
At this thickness, the reflected waves from the front and back surfaces of the coating will interfere destructively, resulting in minimal reflection. This is because the reflected waves will be exactly out of phase, and their amplitudes will cancel each other out. This means that more of the light will be transmitted through the system, resulting in higher transmission and better performance.
So, in summary, the best choice for a non-reflective coating on a glass lens would be a layer of material with an index of refraction between those of glass and air and a thickness of one-quarter the wavelength of the light in the coating (λ/4).
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Telescopes designed to study the earliest stages in galactic lives should be optimized for observations in ______.
A) X rays B) visible light
C) infrared light
D) radio waves
Telescopes designed to study the earliest stages in galactic lives should be optimized for observations in infrared light (Option C).
How telescopes designed to study the observations in infrared light?Telescopes designed to study the earliest stages of galactic formation need to observe light that can penetrate the dust clouds that often obscure these early events. Infrared light is well suited for this purpose because it has longer wavelengths than visible light and can penetrate dust clouds more easily. Infrared telescopes can detect the heat radiation given off by the dust, which is a signature of the formation of stars and planets.
Additionally, infrared light can reveal the presence of cold gas, which is necessary for the formation of stars. By using telescopes optimized for observations in infrared light, astronomers can gain important insights into the early stages of galactic lives.
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What best describes the states of nonmetals when they are at room temperature?
Most nonmetals are gaseous, but some are liquid or solid.
All nonmetals are gaseous unless they bond with a metal.
Most nonmetals are solids, but some are gaseous or liquid.
All nonmetals are solid unless they bond with a metal.
Answer:
A.) Most nonmetals are gaseous, but some are liquid or solid
Explanation:
Answer:
a
Explanation:
The ________ explains how our solar system probably formed from a giant cloud of gases and dispersed solid particles.
The nebular hypothesis explains how our solar system probably formed from a giant cloud of gases and dispersed solid particles.
The nebular hypothesis has the sun and planets forming at the same time. According to this model, our solar system began as a gigantic, disc-shaped interstellar cloud of gases and dust about 5 or 6 billion years ago .What hypothesis explains how our solar system probably formed?
The nebular hypothesis is the theory of planetary creation that is most widely accepted. According to this theory, the Solar System was created 4.6 billion years ago as a result of the gravitational collapse of a massive molecular cloud that stretched across several light-years.What is the nebular theory ?
4.6 billion years ago, the solar nebula, a cloud of gas and dust, gave rise to the Sun and the planets. The collapse of the solar nebula was most likely brought on by a shock wave from a nearby supernova explosion. The planets formed in a thin disk around the Sun, which formed in the center of the solar system.Learn more about nebular hypothesis
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2269X10-³ m write in scientific notation
2269 × 10-³ m can be written in scientific notation as follows: 2.269 × 10⁰.
What is scientific notation?Scientific notation is a method of writing, or of displaying real numbers as a decimal number between 1 and 10 followed by an integer power of 10.
It is an alternative format of such a decimal number immediately followed by E and an integer.
According to this question, 2269 × 10-³ metres is to be converted to scientific notation. We do this by shifting the decimal place backwards three times to obtain the following;
2.269 × 10⁰
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If you stack 3 nickels on a table, how far above the table is their center of gravity?
Answer:
2.93 mm
Explanation:
If you stack 3 nickels on a table, e the table is their center of gravity 2.93 mm
what is center of gravity?The Centre of gravity is a theoretical term, where the body’s total weight is thought to be concentrated and it predicts the behavior of a moving body when acted on by gravity.
It is also useful in designing static structures like buildings and bridges, the center of gravity is identical to the centre of mass.
For the Moon, the centre of mass is very close to its geometric centre and its centre of gravity is slightly towards the Earth due to the stronger gravitational force on the Moon’s near side.
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Water boils at 212°F. Which temperature is an equivalent temperature?
\(\mathrm {Hey, there!}\)
Let's solve your problem:
We will convert your number, 212°F, to Kelvin and Celsius.
212°F is equal to 100° Celsius.
Now, let's do the Kelvin convert.
To convert Celsius to Kelvin, we have to add 273.5 to the amount of Celsius.
100° + 273.5 = 373.5
We have all our conversions. Finally, let's set them out.
Fahrenheit: 212°F
Celsius: 100°C
Kelvin: 373.5°K
Some thermometers contain alcohol. Alcohol is used in thermometers because A. is soluble in waterB. is a clear gas when it evaporatesC. expands and contracts easilyD. has a high density
A rate law that is proportional to the concentration of reactants raised to a power, which corresponds to the reactant's stoichiometric coefficient, is often used to describe reactions that can occur in a single step.
What is the reaction's rate constant, 2N2O5 to 2N2O4 O2?rk = [N2O5] = 2.40 10 53.0 10 5 = 0.8 mol L 1. Calculate the concentration of N2O5 using the reaction's rate and rate constant, which are 2.40 mol L-1 second-1 and 3 mol L-5 second-1, respectively.
What happens when 2O3 and 3O2 react in what order?The following is how the chemical reaction 2O3 3O2 develops. The appropriate expression for the rate law is O3 O2 +O (FAST) O+O32O2 (SLOW).
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Two substances at different temperatures are brought together and allowed to reach thermal equilibrium. Substance A has a specific heat capacity that is four times that of substance B. The mass of substance B is four times the mass of substance A. Which statement best describes the final temperature of the two substances after they are allowed to reach thermal equilibrium? The relative final temperature cannot be determined based on the information given. The final temperature will be closer to the initial temperature of substance A. The final temperature will be closer to the initial temperature of substance B. The final temperature will be midway between the initial temperatures of the two substances.
The final temperature will be closer to the initial temperature of substance A.
When two substances with different temperatures are brought together and allowed to reach thermal equilibrium, their final temperature depends on their specific heat capacities and masses. In this case, substance A has a specific heat capacity four times that of substance B, and substance B has a mass four times that of substance A.
This means that substance
A can absorb more heat per unit mass than substance B. Therefore, the final temperature will be closer to the initial temperature of substance A, as it can absorb more heat and cause less change in its temperature.
Summary: Considering the specific heat capacity and mass differences between the two substances, the final temperature after reaching thermal equilibrium will be closer to the initial temperature of substance A.
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What voltage (potential difference)must be applied to a 26 1
resistor to cause a current of 0.50 A to flow through it?
0 6.5 V
0 13 V
26 V
0 52 V
Answer:
26v
....................
What type of drawing is shown in the figure?
A. Block diagram
B. Wiring diagram
C. Panel diagram
D. Device diagram
\(Question\)
What type of drawing is shown in the figure?
Answer:
Hi, There! My Answer would Be A. Block diagram Or C. panel Diagram!
Hope this helps! ♚♛♕♔ッ✨♚
\(-xXxAnimexXx-\)
I am having a bit of difficulty with this lab question:
_________________________________________
The passage of an occluded front may be accompanied by widespread precipitation and little temperature change at ground level. This is because occluded fronts are a combination of (1). [one / two / three] cold/cool air mass(es), which shifts a (2). [cold / warm / hot] air mass (3). [aloft / sideways / downwards].
_________________________________________
Currently, I have my answers as follows:
1. two cool/cold air masses
2. warm
3. downwards
Could someone help me out and let me know if I am correct? Thanks!
This is due to the fact that occluded fronts combine two cold air masses, which causes one of the cold air masses to go downward.
When a warm air mass is sandwiched between two cold air masses, an occluded front occurs. In an occlusion, the warm front passes over the cold front, which dives beneath it.
In a front is obscured, the warm front is fully supplanted by the cold front, in which the warm air masses have completely disappeared. Furthermore, there are frequent shifts in the various weather producing circumstances because of the cold front's relatively low temperature.
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two 3.8 g bullets are fired with speeds of 42.4 m/s and 62.1 m/s, respectively. a) what is the kinetic energy of the first bullet? answer in units of j.
The second one, which has more mass, will have more KE. Explanation: We are aware that KE = E=12mv2 where m Represents mass & v = movement velocity.
What does velocity vs. speed mean?As contrasted to speed, velocity describes the speed and direction of an object's motion because it travels along a path. So speed seems to be a scalar quantity, however velocity is a vector.
Why does velocity formula exist?According to the equation v = s/t, velocity (v) is a scalar quantity that quantifies displacement (or a shift in position, s), over change in time (t).
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Suppose you had two small boxes, each containing 1.00g of protons.
If one were placed on the moon by an astronaut and the other were left on the earth, and if they were connected by a very light (and very long!) string, what would be the tension in the string? The distance from the earth to the moon is 3.84
The tension in the string is 3.51 x 10^-8 N.
The equation for the gravitational force between two masses m1 and m2 separated by a distance r is given as:
Fg = Gm1m2/r²
where G is the gravitational constant equal to 6.67 x 10^-11 N m²/kg²
To find the tension in the string, we need to find the gravitational force between the two boxes.
Since each box has 1.00 g of protons, the mass of each box is equal to the mass of the protons in each box, which is equal to 1.00 g or 0.001 kg.
The total mass of the system is 2m = 0.002 kg, where m is the mass of one box.
The distance between the two boxes is the sum of their distances from the center of the earth, which is
3.84 x 10^8 m + 384,400 m = 3.84 x 10^8 m + 3.844 x 10^5 m = 3.84 x 10^8 m (to three significant figures).
Therefore, the tension in the string is given as:
T = Fg = Gm1m2/r² = (6.67 x 10^-11 N m²/kg²)(0.001 kg)(0.001 kg)/(3.84 x 10^8 m)²= 3.51 x 10^-8 N (to three significant figures)
Therefore, the tension in the string is 3.51 x 10^-8 N.
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Suppose you are in a spacesuit drifting weightless in space some distance away from your spaceship. You have run out of compressed gas for your mini-thruster. Fortunately, you happen to have a bag of baseballs. What can you do to get back to your spaceship?
Please give an answer quickly I have to turn this in today.
Answer:
v = -\frac{n \ m}{M} \ v'
for the man to return to the ship he must throw the balls in the opposite direction of the ship
Explanation:
For this exercise we can use the conservation of momentum. Let's form a system made up of man and baseballs.
Initial instant. Before throwing the balls
p₀ = 0
Final moment. After throwing the balls
\(p_{f}\) = M v + n m v '
where M is the mass of the man, m is the mass of each ball and n is the number of balls , v isthe speed man and v' is the speed ball
Since the forces are internal, the momentum of the system is conserved
p₀ = p_{f}
0 = M v + n m v ’
\(v =- \frac{n \ m}{M} \ v'\)
If we analyze this expression, for the man to return to the ship he must throw the balls in the opposite direction of the ship
The average speed of a plane was 600 km/hr. How long did it take
the plane to travel 120 kilometers?
Answer:
0.2 hours
Explanation:
You are sitting at a coffee shop and you overhear a conversation at the next table. Two mothers are discussing their teen children and complaining about their behavior- erratic and irrational behavior, displaying little to no logic and reason. One says to the other, I just don’t know who he is. You have just listened to the NPR article and learned about the Endocrine System. You offer the following advice……
Answer:
Explanation:
Our five-year-old, Gabriel, is a very bright, funny, charming little guy. But he still has a lot of tantrums, which we thought would be over by this age. He reacts very poorly to consequences. He will get very threatening and aggressive physically and verbally: slamming doors, hitting, and lashing out verbally. We are constantly negotiating with limit setting. When we hold to the limit, he will escalate and sometimes will have very intense tantrums that can last over 30 minutes. When he is happy, he is the most delightful child. But the second something doesn’t happen exactly how or when he wants it, he is explosive. We are totally exhausted
Which statement best describes the adiabatic process?
Answer:
diaetes
Explanation:
Answer:
A: In an adiabatic process, no heat enters or leaves the system
Which one of these is not a physical charge
A melting and ice cube
B crushing a can
C chopping wood
D metal resting
Answer:
the answer is D metal resting
Explanation:
I just think that because if you treasure can that's physical charge by dropping where you create a physical charge melting and Ice Cube might be 1 but I feel like metal resting is more likely
A circuit with a 25 V battery a 7 Ω resistor and 5 Ω resistor in series. What is the current throughout the circuit?
First, let's calculate the total resistance in the circuit.
Since the two resistors are in series, the total resistance is the sum of each resistance:
\(R=7+5=12\)Now, to calculate the current, we can divide the voltage by the total resistance:
\(\begin{gathered} I=\frac{V}{R} \\ I=\frac{25}{12} \\ I=2.083\text{ A} \end{gathered}\)Therefore the current is 2.083 A.
The Current throughout the circuit is 2.083 A.
To calculate the current, we will use the formula:
I = V / R
Where,
I = current,
V = Voltage of Battery.
R = Total Resistance.
Now, we will use the given values in the question,
V = 25 V
R = 7Ω + 5Ω
Now, we have to find total Resistance,
Total Resistance = 7Ω + 5Ω
= 12Ω.
Now, we will calculate the current using the above formula,
Putting all the values,
I = 25 / 12
I = 2.083 A.
Therefore, the Current running throughout the circuit is 2.083 A.
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Jilly heard the greenhouse door bang, and looked up from her ferns to see Mrs. T. walking down the aisle with a tray of young plants. What is the main purpose of this line
The correct option is (D) Develop rising action.
The primary goal that a person is attempting to accomplish is referred to as their main purpose. It discusses a person's main objective and pursuit.
What is rising action in English?
Following the exposition, the rising action begins and concludes at the climax. Rising action makes up the majority of the plot, starting with the inciting occurrence.It is made up of a succession of incidents that intensify the conflict and raise the stakes before the story's dramatic finale.Learn more about the Rising action with the help of the given link:
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I understand that the question you are looking for is "Jilly heard the greenhouse door bang, and looked up from her ferns to see Mrs. T. walking down the aisle with a tray of young plants.
What is the main purpose of this line?
A) Create conflict
B) Reveal a lesson
C) Develop a character
D) Develop rising action"
A 0.060 kg ball hits the ground with a speed of –32 m/s. the ball is in contact with the ground for 45 milliseconds and the ground exerts a 55 n force on the ball. what is the magnitude of the velocity after it hits the ground? 9.3 m/s 12 m/s 41 m/s 73 m/s
Answer:
Approximately \(9.3\; {\rm m\cdot s^{-1}}\).
Explanation:
Apply unit conversion:
\(t = 45\; {\rm ms} = 45 \times 10^{-3}\; {\rm s}\).
At a velocity of \(v\), the momentum \(p\) of an object of mass \(m\) would be \(p = m\, v\).
Initial momentum of this ball:
\(\begin{aligned}p_{0} &= m\, v_{0} \\ &= 0.060\; {\rm kg} \times (-32\; {\rm m\cdot s^{-1}}) \\ &= (-1.92\; {\rm kg \cdot m \cdot s^{-1}})\end{aligned}\).
When a constant force \(F\) is exerted on an object for a duration of length \(t\), the impulse \(J\) applied to that object would be \(J = F\, t\).
Impulse that the ground applied to this ball:
\(\begin{aligned}J &= F\, t \\ &= 55\; {\rm N} \times (45 \times 10^{-3}\; {\rm s}) \\ &= 2.475\; {\rm N \cdot s}\end{aligned}\).
Note that \(1\; {\rm N} = 1\; {\rm kg \cdot m \cdot s^{-2}}\). Thus, the impulse applied to this ball would be equivalent to:
\(\begin{aligned}J &= 2.475\; {\rm (kg \cdot m \cdot s^{-2}) \cdot s} \\ &= 2.475\; {\rm kg \cdot m \cdot s^{-1}}\end{aligned}\).
After this impulse was applied, the momentum of this ball would become:
\(\begin{aligned}p_{1} &= p_{0} + J \\ &= (-1.92\; {\rm kg \cdot m \cdot s^{-1}}) + 2.475\; {\rm kg \cdot m \cdot s^{-1}} \\ &= 0.555\; {\rm kg \cdot m \cdot s^{-1}}\end{aligned}\).
The new velocity of this ball would be:
\(\begin{aligned}v_{1} &= \frac{p_{1}}{m} \\ &= \frac{0.555\; {\rm kg \cdot m \cdot s^{-1}}}{0.060\; {\rm kg}} \\ &\approx 9.3\; {\rm m\cdot s^{-1}}\end{aligned}\).
Answer:
(A)
Explanation:
I took the test
a lion is running at constant speed toward a gazelle that is standing still, as shown in the top figure above. after several seconds, the gazelle notices the lion and accelerates directly toward him, hoping to pass the lion and force him to reverse direction. as the gazelle accelerates toward and past the lion, the lion changes direction and accelerates in pursuit of the gazelle. the lion and the gazelle eventually each reach constant but different speeds. which of the following sets of graphs shows a reasonable representation of the velocities of the lion and the gazelle as functions of time?
The graph shown in the first option nicely plots the lion's and gazelle's velocities as a function of time, so option A is the correct answer.
Velocity is the rate of change of displacement over time.
It has SI units as m/s.The total amount of movement of an object per unit time is also called velocity. It depends on both the size and direction of the moving object.Velocity can also be called as speed when distance is taken into consideration instead of displacement.As mentioned in the problem of running at a constant speed towards a gazelle with a standing lion as shown above.
So option A is correct.
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Which of the following best describes the circuit shown below?
A. Short
B. Series
C. Parallel
D. Open
Answer:
parallel combination of cell
Why are object in contact come in thermal equilibrium? explain
Answer:
objects, when in contact tend to share heat for example if a cold body is In contact with a hot body the cold body gains the heat and the hot body loses the heat till both the bodies have the same temperature (thermal equilibrium)