Newton's first law states that an object at rest will remain at rest, and an object in motion won't change its velocity while the equilibrium condition is met.
When a system is in equilibrium then?When Newton's first law is true, the thing is in its equilibrium condition. When all external forces acting on an object (including moments) are balanced, that object is said to be in equilibrium in the reference coordinate system. This indicates that all external forces and moments acting on this item have a net effect of zero. When an object is at rest or moving with a constant speed in a reference coordinate system, respectively, they are said to be in static equilibrium and dynamic equilibrium.The inertial force produced by the velocity change can be measured by multiplying the mass with the translational acceleration or the mass moment of inertia with the angular acceleration.To Learn more About Newton's first law refer to :
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what is physical properties of matter
Answer:
A quality of matter that is unrelated to a change in its chemical makeup is called a physical property.
Examples of physical properties of matter:
DensityColorHardnessMelting PointBoiling PointElectrical ConductivityPhysical properties are any qualities of matter that may be felt or seen without changing the sample's chemical composition.
Due to the wide range of features that make up physical attributes, they are further separated into intensive and extensive as well as isotropic and anisotropic categories.
Any characteristic that can be recognized and measured by sight, hearing, touch, smell, or other senses without evoking a chemical reaction is referred to as a physical property. Examples of physical traits are:
Color, Shape, Volume, Density, Calorific value, Boiling point, Viscosity, Pressure, Solubility, electrical current
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After energy conversions, you end up with the same total amount of energy as the original amount energy. Which law explains this rule?.
You end up with the same overall amount of energy as you did before energy conversions were made. The law of conservation of energy provides an explanation for this.
What is law of conservation of energy?Energy cannot be created or destroyed; instead, it can only be changed from one type of energy to another, according to the principle of energy conservation. This is especially puzzling in the case of non-conservative forces, where energy is converted from mechanical to thermal but the total amount of energy remains constant. To be used, energy must be transformed from one form to another.
Therefore, the equation U[tex]_{T}[/tex]=U[tex]_{i}[/tex]+W+Q determines the amount of energy in any system.
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a rocket with a mass of 4kg accelerates up from the ground at a rate of 20ft m/s^2, what is the drag force acting on the rocket if the thrust of the rockets is 150n
The drag force acting on the rocket is 80N.
Give an explanation of drag force?The divergence in velocity between the fluid and the item, also known as drag, exerts a force on it. Between the liquid and the solid object, there should be motion. Drag is absent in the absence of motion.
The air molecules are more compressed (pushed together) on the surfaces that are facing the front while being more dispersed (spread out) on the surfaces facing the back. Turbulent flow, which occurs when air layers split from the surface and start to swirl, is what causes this.
The drag force acting on the rocket F = ma
Given,
m = 4kg, a = 20ftm/s²
Substituting m and a values in the above formula,
The drag force acting on the rocket F = 4×20
The drag force acting on the rocket F = 80N.
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1 5kg cat is lifted 2 m into the air.how much gpe does it gain?
Answer:
Potential Energy= mgh = (5)(9.8)(2)= 98.suppose the skateboarder starts with 0 kinetic energy at the point -5 and starts to roll. describe the motion she will go through assuming that whatever resistive forces are acting can be neglected. describe one full cycle of the motion.
The kinetic energy will start dropping that is slows down , she keeps slowing down while the kinetic energy keeps decreasing with potential energy rising.
What is kinetic energy and what is the motion of the skateboarder starting with 0 kinetic energy ?Kinetic energy is the motion of the molecules of the container due the rise in temperature.Potential energy is the form of energy that an object gains as it is lifted and is stored and conserved.When she is proceeding to speed up potential energy drops and kinetic energy increases.Skateboarder keeps on speeding till +3 units till the potential energy drops.Then the potential energy starts to drop while the kinetic energy keeps on increasing.Skateboarder keeps slowing down till potential energy rises and kinetic energy drops to zero.To know more about kinetic energy visit:
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A lorry travels 10km northwards, 4km eastwards, 6km southwards and 4km westwards to arrive at point T. What is the total displacement?
you hang 200 grams on the 10-cm mark and 400 grams on the 80-cm mark. if the meter stick has a mass of 100-g where should you clamp the meter stick so that it is in balance?
the meter stick so that it is in balance is 56 cm
Taking the equilibrium of Torque about C
200g (40 + x) + 100g x = 400g (30 - x)
200 (40 + x) + (100) x = (400) (30 - x)
x = 5.71
so location = 50 + 5.71 = 55.71 cm = 56 cm
chemical equilibrium is the state during a reversible chemical process where there is no net change in the amounts of reactants and products. When a chemical reaction is reversible, the products react with the original reactants as soon as they are created. There is no net change in the quantity of the constituent substances when the two opposing processes are in equilibrium because they are occurring at identical rates or velocities. The reaction may now be regarded as being finished, meaning that the maximal amount of reactants to products has been converted under the given reaction conditions.
It is possible to quantify the equilibrium-related conditions. For instance, in the reversible reaction A B + C,
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a constant force is applied to an object, causing the object to accelerate at 10 m/s2 . what will the acceleration be if the force is halved and the object's mass is doubled? express your answer using two significant figures.
The acceleration is if the force is halved and the item's mass is doubled is 2.5 m/s².
Force is a push or pulls upon an item due to the item's interaction with a few different item. strain is a energy that could change the motion of an item. A force can purpose an object with mass to exchange its velocity, i.e., to boost up. stress also may be defined intuitively as a push or a pull. A force has each significance and route, making it a vector amount.
In the first case,
Let the mass of the object is = m
acceleration = 10 m/s²
The constant force F = ma
F = 10m ---------(1)
New case 2,
force F' = F/2
mass M' = 2m
a = F'/M'
= F/2 × 2m
a = F/4m
F = 4ma ----------(2)
dividing equations 1 and 2
⇒ [tex]\frac{F = 4ma}{F = 10m}[/tex]
a = 10/4
a = 2.5 m/s²
The phrase 'force' has a unique which means. At this degree, it's far truely appropriate to describe a pressure as a push or a pull. A force isn't always something that an item consists of or 'has in it. A pressure is exerted on one object thru another. The idea of a force is not confined to living matters or non-dwelling matters.
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AP physics 1: Extra points!!
1. There are three forces.
2. Yes, the forces on the beam are balanced.
3. The magnitude of the net force on them is zero.
4. The tension in Cable 1 is 8,596.49 N
5. The tension in Cable 2 is 8,596.49 N
The forces acting on the beam are two tension forces due to the cable and one gravitational pull due to its weight. Thus, there are three forces acting on the beam.
The force on the beam is perfectly balanced as the cable is uniformly attached to it. The beam is moving with constant velocity, thus the acceleration is zero, and hence, the net force acting on it is also zero.
The tension, T, in both cables is equal as they are inclined at the same angle.
Now, we resolve them into rectangular components and write
Tsin35 +Tsin35 = mg = 1000*9.8 = 9800
2Tsin35 = 9800
Tsin35 = 4900
T*0.57 = 4900
T = 8,596.49 N
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what additional information is most important for them to add to the graph to best explain the work they've done?
Text is helpful for guiding the viewer and assisting with understanding. The graph's text provides extra details. In graphs, there are two different sorts of text: text that appears around the data regions.
In mathematics, a graph is a visual representation of any data that has been organized. The graph depicts the link between the various variables. The set of items that are somehow related to one another is represented by the graph in a graph theory.
A report can include numerous data regions. Data regions expand to hold the information from the report dataset to which they are associated. For instance, a matrix that shows annual sales for each product has a row group based on the names of the products and a column group based on the years.
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A candle 3.0 cm high is placed 30 cm from a converging mirror with a focal length of 20 cm.
I hate to leave you without an answer, but there isn't enough information to be able to answer your problem.
a he-ne laser emits wavelength of 633 nm. its beam diameter is 1 mm. find the minimum angular spread due to diffraction.
The minimum angular spread due to diffraction is 633×10⁻⁹m.
What is diffraction-induced spread?The spread of the spot (obtained on the opposite wall of the camera) is thought to equal the total of its geometrical spread and the spread caused by diffraction when the hole is lit by a parallel beam of light with wavelength lambda.
When waves flow through an aperture or around objects, they spread out, which is referred to as diffraction. It happens when the wavelength of the incident wave and the size of the aperture or obstruction are on the same order of magnitude. The majority of the wave is blocked at extremely small aperture diameters.
Minimum angular spread due to diffraction (θ) = λ/b
Given.
Wavelength = 633nm = 633×10⁻⁹m
Beam diameter is 1mm.
Minimum angular spread due to diffraction (θ) = 633×10⁻⁹m/1
Minimum angular spread due to diffraction (θ) = 633×10⁻⁹m.
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specular reflection obeys the laws of reflection while diffuse reflection does not. question 18 options: true false
False, In contrast to diffuse reflection, specular reflection violates the laws of reflection. Normal reflections are parallel to the surface of a flat mirror. The law of reflection only applies to flat surfaces. Convex mirrors serve as passenger door mirrors in cars.
The law of reflection states that the angle of incidence & angle of reflection is identical. A smooth finish causes a specular reflection of light. Since incident rays are parallel, reflected rays must also be parallel. Light striking a rough surface causes diffuse reflection.
The two principles governing specular reflection are,
1. At the point of incidence, the incidence angle, the reflected ray, as well as the normal towards the reflecting interface all lie in the very same plane.
2. The angle of incidence and reflection are equal.
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a 0.165 kg mass is attached to a spring and undergoes simple harmonic motion with a period of 0.95 s. the total energy of the system is 3.1 j. find the amplitude of the motion. answer in units of m.
The amplitude of the motion is 0.608.The amplitude of a particle is its maximum departure from its equilibrium position or mean position, and its direction is always in the opposite direction.
What is the amplitude of the motion?The amplitude of a particle is its maximum departure from its equilibrium position or mean position, and its direction is always in the opposite direction. Its dimensions are [L1M0 T0] and its S.I. unit is the meter.
It alludes to the greatest departure from equilibrium that an object in periodic motion can exhibit. As an illustration, consider how a pendulum moves through its equilibrium point (straight down) and then moves outward to its maximum distance.
The motion's angular frequency is
W=2[tex]\pi[/tex]/T
=2[tex]\pi[/tex]/0.95
=6.61
w=√k/m on a spring for a mass. Rearranging this formula results in
k=wm²=0.165×6.61×6.61=7.209 N/m
A system performing simple harmonic motion has a total energy of
E=a²k÷2 .Rearranging this formula results in
a=√2E÷k=√2×3.1÷7.209
=0.608 m
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Click to review the online content. Then answer the question(s) below, using complete sentences. Scroll down to view additional questions.
Online Content: Site 1
Fitness Log
What steps can you take in your everyday life to properly care for your skeletal system? (Site 1)
Incorporating physical activity into your everyday routine is one approach to care for your skeletal system.
Walking, running, and climbing stairs are all weight-bearing workouts that can help you grow strong bones and reduce bone loss. Substance misuse should be avoided.
What is the skeletal system?The human skeleton is the body's internal framework. It is made up of around 270 bones at birth, which lowers to approximately 206 bones by adulthood as certain bones fuse together.
It is to be noted that the skeleton's bone mass accounts for around 14% of total body weight and achieves maximal density around the age of 21.
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a 39-kg crate rests on a horizontal floor, and a 68-kg person is standing on the crate. (a) determine the magnitude of the normal force that the floor exerts on the crate. n (b) determine the magnitude of the normal force that the crate exerts on the person.
The floor normally presses down on the carton with a force of 1049.67N.
The box normally applies 667.08 N of force to the person.
What do you mean by normal reaction force?A perpendicular force that acts on two surfaces that are touching. It stands in for the pressure pressing the two surfaces together. With the size of the usual response force, the value of limiting friction grows. If the weight is the only vertical force acting on an object that is lying or moving on a horizontal surface, While acting in the opposite direction from the weight, the normal response force is of identical size. Raising the weight results in increased friction.
Given,
The crate's mass, mp=68kg, is maintained on a horizontal floor.
mc=39kg is the mass of the guy standing above the crate.
(a) determine the normal force the floor applies to the crate:
N =(mc+mp)g
N =(39kg+68kg)×9.81m/s²
N = 1049.67kg⋅m/s² [tex]\frac{1N}{1Kg.m/s^{2} }[/tex]
N = 1049.67N
∴ The floor normally presses down on the carton with a force of 1049.67N.
(b) determine the typical force the crate would apply to the person:
N = mp g
N = 68kg×9.81m/s²
N = 667.08m/s² [tex]\frac{1N}{1Kg.m/s^{2} }[/tex]
N = 667.08 N
∴ The box normally exerts 667.08 N of force on the person.
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Adhere to the images given:
The reason for the first graph is because of the effects of deceleration and acceleration due to gravity while the arrangements of the graphs are; B> D > A> C.
What is the position- time graph?When we plot a graph, the graph would always have to axes; the vertical axis and the horizontal axis. In this case, the vertical axis is the position and the horizontal axis is the time. The slope of this graph speaks of the displacement of the object.
Looking at the first graph, we can see that it can be able to show the motion of an object that went up and fell down as the speed of the object would decrease during the upward motion as it is decelerated due to gravity and comes to a halt at the maximum height before it is accelerated as it moves downwards.
From the graphs, the ranking of the displacements for the second set of graphs as; B> D > A> C. This is because there is a positive slope in B and D while the slope in A is zero and that in C is negative.
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a thermodynamic cycle is shown for an ideal gas in a piston. the system changes state from abca. a) what is the total work done by the gas during this cycle?
The total work done by the gas during this cycle is A −40J.
For process 2→3 (volume constant)
Q=−40 J
W=0 (As V is constant)
ΔU=Q=−40
U3−U2=−40 (i)
For process 1→2 (temperature constant)
T1=T2
U1=U2 (ii)
From (i) & (ii)
U3−U1=−40
ΔU3→1=40 J
For process 3→1 (Adiabatic process)
W=−ΔU
W=−40J
A thermodynamic cycle comprises of a connected grouping of thermodynamic forms that include the exchange of warm and work into and out of the framework.
Whereas changing weight, temperature, and other state factors inside the framework, inevitably returns the framework to its introductory state.
The thermodynamic cycles are exceptionally fundamental for the control-creating frameworks (such as petrol motors, diesel motors, gas turbines, etc.).
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What is the normal force on an object weighing 437N at rest on an inclined plane with an angle of 29 degrees?
Answer:408
Explanation:
Answer:
382.2 N
Explanation:
You want the normal force on an object weighing 437 N situated on an inclined plane 29° from the horizontal.
Force vectorThe vector 437 N straight down can be decomposed to vectors parallel to the plane and perpendicular to the plane. That decomposition looks like ...
(perpendicular, parallel) = 437 N · (cos(29°), sin(29°)) ≈ (382.2, 211.9) N
The normal force on the object is about 382.2 N.
an empty beaker is weighed and found to have a mass of 130g. a measuring cylinder contains 50cm3 of an unknown liquid. all the liquid is poured into the beaker which is again weighed and found to have a mass of 170 g. calculate the density of the liquid. pleasee with explanation)
Answer:
0.8 g/cm^3
Explanation:
mass of liquid = mass of beaker + liquid - mass of beaker
= 170g -130g = 40 g
density = mass/ volume
therefore:
density of volume = [tex]\frac{40g}{50cm^3} = 0.8 g/cm^3[/tex]
where need be for 3 significant figure or 2 decimal place, just add zeros at the back of the 8
when a variable force is applied to an object, it travels a distance of 5 m. the total work done on the object is given by
50 Newton is the total work done on the object.
d=5 cm
F= 10 N
work done=Fd
work done=5×10
work done=50 N
When moving an object over a distance, an external force must direct at least a portion of its force in the direction of the displacement. This is referred to as work done in physics. If the force acting along the path is constant, the amount of work can be calculated by multiplying the length of the path by the force's component. The work W is equal to the force f times the distance h to express this idea mathematically, or W = mgh. The work is W = mas if the force is applied at an angle to the displacement.
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a car enters the freeway with a speed of 5.9 m/s and accelerates uniformly for 3.3 km in 2.9 min. how fast is the car moving after this time?
The car will move fast with the velocity of 32.03 m/s
What is acceleration?Acceleration: the rate at which the speed and direction of a moving object vary over time. A point or object going straight ahead is accelerated when it accelerates or decelerates. Even if the speed is constant, motion on a circle accelerates because the direction is always shifting. Both effects contribute to the acceleration for all other motions.Acceleration is a vector quantity, since it has both a magnitude and a direction. A vector quantity is also velocity. The velocity vector change during a time interval divided by the time interval is the definition of acceleration. The limit of the ratio of the change in velocity during a given time interval to the time interval as the time interval approaches zero determines the instantaneous acceleration (at a specific time and location) For instance, acceleration will be stated in meters per second per second if velocity is expressed in meters per second.Calculation
Initial velocity(u) = 5.9 m/s
Distance traveled = 3.3 km = 3300 m
Time = 2.9 min = 2.9×60 = 174 seconds
Formula,
[tex]s=\frac{1}{2} (u+v)t[/tex]
[tex]3300=\frac{1}{2} (5.9+v)*174[/tex]
[tex]v= (\frac{6600}{174} -5.9)m/s[/tex]
v = 37.93–5.9 = 32.03 m/s
Hence, the car will move fast with velocity = 32.03 m/s
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A 5 kg ball is thrown into the air. It is going 6
m/s when
thrown. How much potential energy will it have
at the top?
The potential energy will be 180J
By going through the formula of potential energy that is U=mgh
where, U= Potential energy
m= mass
g= gravitational feild
h= height
Now as per the question,
Initial velocity, u = 6 m/s
Final velocity, v = 0 m/s
Acceleration due to gravity, g = -5 m/s²
(The negative sign implies that the object is moving downwards)
To find the value of Height, we need to use the relation,
v^2 - u^2 = 2gh
0 - 36 = -10h
h = 36/10 m
Height = 18/5 m
therefore, Potential Energy(U) = mgh
= 10 × 5 × 18/5 J
= 180 J
Therefore, the ball will have a potential energy of 180 J when it is at its highest point.
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Draw your model to show what happens during the time when a balloon is being rubbed on a girl’s hair.
The electrons are transferred from hair to balloon when a balloon is being rubbed on a girl’s hair and attains a negative charge.
What happens when a balloon is rubbed with hair?Rubbing the balloon against the hair leads to the transfer of electrons from the hair to the balloon because electrons are negatively charged, the balloon attains a negative charge, while on the other hand, the hair with the loss of negative charges gets a net positive charge. Static electricity occurs due to an imbalance between negative charges and positive charges in a body. These charges can build up on the surface of a body until they find a path to be released or discharged. Static electricity is produced when positive and negative charges are not in a balanced situation. Protons and neutrons don't move around but electrons jump from one place to another place. When an object has more electrons than protons, it has a negative charge.
So we can conclude that when a balloon is being rubbed on a girl’s hair, the electrons are transferred from hair to balloon.
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a hoop with a radius r and a mas m has a momentum of inertia i. what would be the moment of inertia of a second hoop with the same radius but twice the mass?
The momentum of inertia of second hoop will be twice of first hoop
The moment of inertia of a hoop will be = m[tex]r^{2}[/tex]
first hoop:
radius = r1
mass = m1
inertia = I1 = m1[tex]r1^{2}[/tex]
second hoop
radius = r2 = r1
mass = m2 = 2m1
inertia = I2 = m2 * [tex]r2^{2}[/tex]
= 2m1 [tex]r1^{2}[/tex] = 2 I1
The momentum of inertia of second hoop will be twice of first hoop
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A source vibrating at constant frequency generates a sinusoidal wave on a string under constant tension. If the power delivered to the string is quadrupled, by what factor does the amplitude change?.
As the tension of the spring is held constant as well as the frequency of the resulted sinusoidal wave, if the power delivered to the string is quadrupled, the amplitude will increase by factor 2.
If the frequency is held constant, the energy delivered to a wave is directly proportional to the square of its amplitude, or:
E ∝ A²
Where:
E = energy
A = amplitude
Power is energy per unit time, therefore power is also directly proportional to the square of amplitude.
P₂ : P₁ = A₂² : A₁²
From the problem, we know that P₂ = 4P₁
Hence,
4P₁ : P₁ = A₂² : A₁²
A₂² = 4 A₁²
A₂ = 2 A₁
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Determine the direction of the magnetic field of the current-carrying wire in the vicinity of the loop.
To determine the direction of the magnetic field of the current-carrying wire in the vicinity of the loop, you can use the right-hand rule.
How do you use this right-hand rule?If you're confused of what the direction of the magnetic field around a current-carrying wire is supposed to be, you can use the right-hand rule to conveniently figure out the direction. To use this right-hand rule, first curl your right-hand fingers and then point your right thumb in the direction of the current in the wire. Your right-hand fingers will be curled in the same direction as the direction of the magnetic field around the current-carrying wire.
There is another type of the right-hand rule. This type of right-hand rule is used to identify the direction of axes or parameters that point in three dimensions.
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a golf ball of mass 45.93 g has a velocity of 74.22 m/s immediately after being struck. if the club and ball were have an average contact force of 8896 n, how long does the contact last?
The time for that contact force is 0.00038 s.
An impulse is a surprising pressure or choice — this will be an electrical impulse or an impulse to get a few pizzas. if you act on an unexpected feeling or concept, you're following an impulse. it's like a whim: an impulse is not something you have given quite a few concepts. The impulse of pressure is the product of the resultant pressure ΣF and the length of this force Δt if the pressure is constant. The impulse of pressure is the purpose of changes to movement and consequently changes to momentum.
Momentum is a vector amount that has an equal path to the velocity of the item. the amount of force accelerated by the time it's far implemented is called impulse. Impulse is a vector quantity that has an equal path to the pressure. Momentum and impulse have equal gadgets: kg·m/s
Calculation:-
mass = 45.93 g = 0.046 kg
velocity = 74.22 m/s
Impulse = Change in Momentum
Ft = mv
t = 0.046 × 74.22 / 8896
= 6455.696 N
= 3.8 × 10⁻⁴ Sec
Therefore, the time for that contact force is 0.00038 s.
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facts about the immune system
The immune system is a complex network of organs, cells, and proteins that protect the body's own cells while defending it against infection.
The immune system keeps a record of every germ (microbe) it has ever defeated in order to quickly recognize and destroy the microbe if it re-enters the body.
The immune system, unlike the heart or the brain, does not have a centralized location in the body. Instead, immune system cells are produced in organs throughout the body, including the tonsils, lymph nodes, spleen, bone marrow, and adenoids.
Our immune system also weakens with age, as immune system tissues shrink and our white blood cell count and activity decrease.
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According to the first law of thermodynamics, work done by a system will cause _________ in the internal energy, assuming that no heat is transferred to or from the system.
According to the first law of thermodynamics, work done by a system will cause decrease in the internal energy, assuming that no heat is transferred to or from the system.
First law of thermodynamics says that energy can neither be created nor it can be destroyed, it can only be transferred from one form to another form. This is also a law of conservation of energy.
It means if there is any work done by any system then that system has burned its energy to do the work. so when energy is used to do the work , there will be decrease in the internal energy of the system, and that will be equal to the workdone.
ΔU = ΔW
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