The weight of the same object on a planet where gravitational attraction is mg /10.
Force = mg
On Earth weight = force = mg where g = acceleration of gravity
But according to your question
On a planet with gravity 1/10 of the earth is
Weight = force = mg /10.
On the Moon, gravity pulls less on objects so they weigh less. For example, a rock that weighs 1 pound weighs less on Earth than it does on the Moon. Weight is the result of the law of universal gravitation. Any two objects are attracted to each other by their masses with a force directly proportional to the product of their masses and inversely proportional to the square of the distance between them.
The mass remains the same and the weight decreases on the moon. When flying to the moon the gravitational acceleration is less than the gravitational acceleration. That's about one-sixth of the acceleration due to gravity. If gravity is halved, atmospheric pressure is halved. This equates to climbing above 5,000 meters. This means that all humans will struggle to breathe enough oxygen, more than they can live on forever.
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An unsupervised child has snuck away from a guided tour on a family vacation to
Mars. They decide it would be fun to throw something from a small cliff, since it will
travel pretty far, given that the acceleration due to gravity on Mars is only 3.7 m/s2.
So, they throw a stone with a speed of 8.2 m/s, at an angle of 60 degrees above the
horizontal. The cliff has a height of 12 meters, and the child releases the thrown stone
at a height of 1.1 meters above the top of the cliff.
How much time passes between when the stone is thrown and when it hits the ground?
What is the horizontal displacement of the stone (between where it thrown and where
it hits the ground)?
What is the speed of the stone when it hits the ground?
The Time taken by the stone to reach tot he ground is 2.10 seconds, the horizontal displacement of the stone is 1.95 meters, and the speed of the stone when it reaches the ground is 9.5m/s.
The height H of the cliff from which the child has thrown the stone is 12m.
The value of acceleration due to gravity on mars is 3.7m/s².
The angle at which the stone is throw is 60°.
The initial speed of the stone is 8.2m/s.
The kid releases the stone from the height 1.1m above the height of the cliff.
So, the total vertical displacement of the stone is 13.1 meters.
The time of flight T of the stone can be found by using this equation of motion,
T = 2Usinα/a
Where,
U is the initial velocity,
α is the angle at which the stone is thrown,
a is the acceleration.
Putting the values,
T = √[2(√3)8.2/(3.2)(2)]
T = 2.10 seconds.
Total time of flight is 2.10 seconds.
As there is no acceleration in horizontal direction, so, horizontal direction, and the velocity in horizontal direction is Ucos60°,
So, horizontal displacement R is ,
R = Ucos60°/T
U is the initial velocity,
putting the values,
R = 8.2/4.2
R = 1.95 meters.
Horizontal displacement is 1.95 meters.
The speed S when it hits the ground is,
S = √(2aH)
Where,
a is acceleration,
H is the horizontal displacement,
S = √(2x3.2x13.1)
S = 9.15 m/s.
The speed of the stone on touching the ground is 9.1m/s.
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A moving walkway at the airport moves a 120Kg person 35m in 150s. How much power did this require?
The amount of power required to move the 120 Kg person to a distance of 35 m in 150 s is 274.4 W
How to determin the powerPower is simply defined as the rate at which work is done. It can be expressed mathematically as
Power (P) = work (W) / time (t)
But
Work = force (F) × distance (d)
Therefore,
P = Fd / t
With the above formula, we can obtain the power as follow:
Mass (m) = 120 KgDistance (d) = 35 mTime (t) = 150 sAcceleration due to gravity (g) = 9.8 m/s² Force (F) = mg = 120 × 9.8 = 1176 N Power (P) = ?P = Fd / t
P = (1176 × 35) / 150
P = 41160 / 150
P = 274.4 W
Thus, the power is 274.4 W
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hi hello can i get help on this ASAP
its two questions just to let you know
please please help
The whole wheat bread contains more protein than the white bread .
if you eat tossed salad without ranch dressing ,you gain 4 grams of protein.
What is tossed salad ?
a green salad that frequently includes additional veggies (such sliced tomato and cucumber) and is dressed with oil.
Benefits of eating salads :
Healthy Salads Help You Get Enough Fruits and Vegetables.
Vegetable and Fruit Salads are Full of Fibre.
Healthy Salads Cut Calorie Consumption.
You’ll Get Access to Good Fats.
A Salad Provides Water .
Salads Can Cool You Down.
What is whole wheat bread ?Using flour that has been partially or totally milled from whole or nearly-whole wheat grains, whole wheat bread, also known as wholemeal bread, is a type of bread. For more information, see whole-wheat flour and whole grain. It is a specific type of brown bread. Outside of the United States (such as the UK), whole grain bread and wholemeal bread are synonyms or close synonyms for whole-wheat bread. In some US regions, the bread is simply referred to as wheat bread in contrast to white bread. When compared to the nutritional worth of a high-quality loaf, some varieties of whole-wheat bread are customarily sprinkled with whole or broken grains of wheat.
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the current is 0.08A calculate the amounts of charge passing a point in the circuit in 2 minutes
Answer:
Charge is 9.6 Coulombs
Explanation:
- From definition of current, current is rate of flow of charge in a circuit
[tex]current = \triangle(charge) \\ \\ current = \frac{charge}{time} \\ \\ { \boxed{ I = \frac{Q}{t} }}[/tex]
- From the question above,
I is 0.08AQ is ?? (needed)t is 2 mins = (2 × 60) = 120 s[tex]0.08 = \frac{Q}{120} \\ \\ Q = 120 \times 0.08 \\ \\ Q = 9.6 \: C[/tex]
a 200 n sign hangs from the middle of a cable between two buildings. the ends of each cable are attached to each building at the same height. the cable cannot exceed 1500 n without breaking. find the minimum angle that the cable can make from the horizontal.
[tex]3.82[/tex]° is the minimum angle that the cable can make from the horizontal without breaking
For the sign to be in equilibrium, the net force on the sign in vertical direction must be zero. The forces acting on the sign in the vertical direction are the vertical components of the tension forces in cable from each building acting in the upward direction and the weight of the sign acting in downward direction. The vertical components of the tension forces must be equal. Thus, the force equation in the vertical direction can be written as,
[tex]2T sin \theta-W=0[/tex]
Here, T is the maximum tension the cable can withstand, [tex]\theta[/tex] is the angle the cable makes with the horizontal and W is the weight.
Rearranging the equation,
[tex][sin \theta=W/2T],[\theta=sin^-1W/2T],[=sin^-1200N/2(1500N],[=3.82[/tex]]
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What must be in cm, the barometric height so that the pressure is 1000 mbar?Density of mercury: 13.6
75.064 cm
Explanation
to solve this we need to know the equivalence
[tex]1mmbar=0.075006cmHg[/tex]then
let's use a equivalente fraction to convert the measure
[tex]1000\text{ mbar(}\frac{0.075006\text{ cm HG}}{1\text{ mbar}})=75.064\text{ cm Hg}[/tex]hence, the answer is 75.064 cm
I hope this helps you
suppose the position vector was r= d e_r , where theta is fixed (i.e., e_r does not rotate) but the length d is not constant. which one of the following is correct?
a. Velocity = d theta (theta-dot)
b. Velocity is zero
c. Velocity is (d-dot) theta e_theta
d. Velocity is (d-dot) er >
The velocity as calculated is Option d) Velocity is (d-dot) er
As given in the question the position vector is
r = d e_r
The length d is not constant with time but varies with it
The theta is fixed hat is e_r does not rotate that is it is constant with time.
To find the velocity we use the formula
velocity v = [tex]\frac{dr}{dt}[/tex] where r is the position vector
⇒ v = [tex]\frac{d(de_r)}{dt}[/tex]
⇒v = (d-dot)e_r + d( e_r - dot) (where dot means the time derivative)
⇒v= (d-dot) er (e_r - dot =0 because e_r is fixed )
∴The value of velocity = (d-dot) er which is
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A group of physics students are on a bridge that is an unknown distance above the river below. They are dropping objects from the bridge platform and recording their results. Answer the following questions about their experiment.
17. The students want to calculate how high the bridge is above the water. They are able to measure time accurate to the tenth of a second. How will this limit the precision of their height calculations?
If the time is measured accurately to a tenth of a second, the height calculated will be precise to one hundredth of a meter.
According to Equations of motion,
s = ut + 1 / 2 at²
s = Displacement
u = Initial velocity
t = Time
a = Acceleration
If an object is dropped,
u = 0
a = 9.8 m / s²
s = 0 + ( 1 / 2 * 9.8 * t² )
s = 4.9 t²
If the time value is accurate to one-tenth of a second, then two time values multiplied will be accurate to one-hundredth of a second and so will the height in turn which will be measured in meters.
Therefore, if the time is measured accurately to a tenth of a second, the height calculated will be precise to one hundredth of a meter.
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Do I fill out this chart right? Can you please check my work? Maybe I have some mistakes
ANSWER
EXPLANATION
Ice is the solid state of water - think about ice cubes you'd use to cool a soda, they are in solid state.
Water at room temperature is always liquid - remember that 'room temperature' is about 25°C.
The weight of a sphere is proportional to its radius cubed. If a sphere of diameter has a mass of , what diameter sphere has a mass of ?.
The diameter is 16 cm.
To formulate the relationship between diameter and mass it is essential to know the relationship between mass volume, and density. Since mass m = density volume is directly proportional to the diameter. The relationship between mass and diameter is given by The weight of an object on earth is directly proportional to the mass of the earth and inversely proportional to the square of the radius of the earth.
We know that the center of mass lies on the axis of symmetry. Since a sphere is a single figure the center of mass is where one axis of symmetry intersects another. The relationship between the weight of an object and the radius of that object is that if the radius is greater then the force acting on the object is large and if the radius is small the force acting on the object is small.
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The proportionality dependence of the current (i) through any conductor to the voltage (v) across it and its resistance (r) is true for all conductors regardless of temperature.
a. True
b. False
It is FALSE that the proportionality dependence of the current (i) through any conductor to the voltage (v) across it and its resistance (r) is true for all conductors regardless of temperature.
When the conductors have a higher temperature, the molecules in the conductor will be more crowded and the result is the resistance of the conductor will rise. Hence, the current flowing through the conductor will decrease in the same voltage.
In the lower temperature, the resistance of the conductor will decrease and lead to more current flowing through the conductor in the same voltage.
Thus, the conductor temperature has an effect on its resistance.
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What is the longest wavelength λ of light that will provide photons of sufficient energy to break the π bond and cause the isomerization?.
The longest wavelength that is required to break the bond is 448 nm.
What is a pi bond?The term pi bond has to do with a multiple bond. In chemistry, there are basically two kinds of bonds which are the pi bond and the sigma bonds. The sigma bonds are the single bonds.
Actually, the sigma bond is stronger than the pi bond and the pi bond can be broken easily especially when the compound has been irradiated with a strong light of the appropriate wavelength. The energy that is required to break a pi bond is 4.42*10^-19 J. When this energy is supplied, the pi bond can be broken hence the wavelength that correspond to it is what we seek.
Given that;
E = hc/λ
E energy
h = Plank's constant
c = speed of light
λ = wavelength
We now have;
λ=hc/E
λ= 6.6 * 10^-34 * 3 * 10^8/4.42*10^-19 J
= 4.48 * 10^-7 m or 448 nm
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where should you put a third mass m so that the net gravitational force on m due to the two masses is exactly zero?
The particle with a mass of 3m should be to the left of the third mass, and the particle with a mass of m should be to the right.
Briefing:F = GMm/r² So that the net gravitational force exerted on M by the two masses is exactly zero, we must now determine where to place a third object of mass M.
Why is it called gravitational force?Because it consistently attempts to pull masses together rather than pushing them apart, the gravitational force is known as attractive. It is obvious that the gravitational force directly relates to the masses of the two interacting objects; larger, more massive objects will pull apart with a stronger gravitational force.
Gravity has a big impact on us. We would not be able to live on Earth without it. Due to the sun's gravity, Earth revolves around it, keeping us at a comfortable distance from it to experience the planet's warmth and light. It maintains the environment and air we need to breathe.
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How do we know what parts make up the atom?
Atoms are discovered through a series of experiments, through each experiment different discoveries were made about atom which lead to the conclusion that atom is made up of particles.
What is an atom?An atom is the smallest unit which makes up of a molecule. An atom is made up of many subatomic particles such as proton, neutron, and electrons. An element is made up of same type of atoms.
Through a very long series of experiments, the structure of the atom was devised. Each one of the experiment was designed to look at a specific aspect of the atom. At early times, the atom was thought to be a solid ball of positive charge (protons) with electrons (negative charge) embedded in it. Then in 1909, Rutherford did an experiment through which he demonstrated that that picture of the atom was wrong and the positive charge was centered at the center of the atom in the nucleus and occupied a very small volume compared to the whole atom.
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What characteristic of a wave did we learn is related to the intensity or loudness of a sound?.
The amplitude of the wave is related to the intensity or loudness of the sound.
What is amplitude?
A periodic variable's amplitude measures its change over a single period (such as time or spatial period). A non-periodic signal's magnitude in relation to a standard value is its amplitude. There are several definitions of magnitude, all of which depend on how much the extreme values of the variable differ from one another. The phase of the a periodic function sometimes is referred to as the amplitude in older texts. The maximum displacement of a wave propagating medium particle from its mean position to its extreme position is the amplitude.
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Love waves are a type of surface wave. they are similar to s waves in that they?
S-wave motion is identical to that of love waves, but there is no vertical displacement. In a horizontal plane and at a right angle to the direction of propagation, they cause the ground to move side to side.
After British mathematician A. E. H. Love, who developed the mathematical model for this wave type in 1911, one type of surface wave is known as a Love wave. Motion is only horizontal in a love wave. Love waves are horizontally polarized surface waves in the field of elastic dynamics, and they are named after Augustus Edward Hough Love. The interference of numerous shear waves (S-waves), which are guided by an elastic layer and joined to an elastic half space on one side while encroaching on a vacuum on the other, results in the Love wave.
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How long will it take for a car to come to a complete stop when traveling at 45 miles per hour if its acceleration is -3 miles/hr/sec?
ANSWER:
15 sec
STEP-BY-STEP EXPLANATION:
Given:
Initial speed (u) = 45 mph
Final speed (v) = 0 mph
Acceleration (a) = -3 mph/s
To make it easier to calculate them, we convert all units to the same unit, distance in meters and time in seconds, therefore:
[tex]\begin{gathered} \text{ 1 Miles per hour \lbrack mph\rbrack equals 0.44704 Meters per second \lbrack m/s\rbrack} \\ \\ \text{ 1 Mile per hour per second \lbrack mph/s\rbrack equals 0.44704 Meters per second}^2\text{ \lbrack m/s}^2\text{\rbrack} \\ \\ \text{ Therefore:} \\ \\ u=45\text{ mph}\cdot\frac{0.44704\text{ m/s}}{1\text{ mph}}=20.1168\text{ m/s} \\ \\ a=-3\text{ mph/s}\cdot\frac{0.44704\text{ m/s}^2}{1\text{ mph/s}}=-1.34112\text{ m/s}^2 \end{gathered}[/tex]Now, we use the following formula to calculate the braking time:
[tex]\begin{gathered} v=ut+at^2 \\ \\ \text{ we replacing} \\ \\ 0=20.1168\cdot t+(-1.34112)t^2 \\ \\ 0=t(20.1168-1.34112t) \\ \\ 20.1168-1.34112t=0 \\ \\ t=\frac{20.1168}{1.34112} \\ \\ t=\text{ 15 ec} \end{gathered}[/tex]That is, it will take 15 seconds to stop.
what should I say? This makes me scratch my head in confusion
Newton's first law of motion is also known as the law of inertia. Newton's first law applies whether the object is in motion or not.
Objects do not change motion unless a force is applied. The second law states that the force on an object is equal to its mass times its acceleration. The third law states that when two objects interact, forces of equal magnitude and opposite directions are applied to each other. The law of motion shown in the picture is Newton's first law of motion.
According to Newton's first law of motion, a person at rest does not change motion until some pressure is applied. Newton's first law of motion describes how inertia affects moving and stationary bodies. Newton's first law states that an object will either remain stationary or move in a straight line with constant velocity unless an unbalanced force acts on it. Another name for Newton's second law is the law of force and acceleration.
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Acceleration data is collected on a falling bowling ball. The
following table shows the acceleration with respect to time
after the ball is released.
Acceleration (m/s²)
9.8
5.4
2.8
1.5
0.6
0
Time after release (s)
0
1
2
3
4
5
The bowling ball has a mass of 5 kg. What is the force of
gravity (weight) on the ball?
Answer:
5lb heiw yakehe ajebe hebd ueje
a small cart of mass 4 kg slides down from the top of a curved track of unknown length. it first passes a patch of rough surface, and then it hits a spring of rest length 1.85 m and stops. the spring is also located on a second patch of rough surface. if height of the curved track is 4 m, the cart's velocity after passing the first rough patch is 2 m/s, and the coefficient of kinetic friction is 0.47,what is the length of the first rough patch in meters? use g
The length of the first rough patch is 3.75 m.
The first rough patch is located at the point where the cart hits the spring of rest. The distance to this point is equal to the length of the spring (1.85 meters) plus 0.47 meters, which is 1.80 meters.
The cart's velocity after passing the first rough patch is 2 m/s, and the coefficient of kinetic friction is 0.47, so when it hits a spring of rest length 1.85 m (length of the second rough patch), it must have a velocity of 6.4 m/s in order to stop at a distance of 0.85 m from the spring.
This means that if height of the curved track is 4 m, then the length of the first rough patch is 3.75 m.
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A rock is dropped off a 60 m high cliff. How long will it take the rock to reach the bottom?
*
10 points
2.5 sec
3.5 sec
6.12 sec
12.25 sec
The rock will take 3.5 seconds to reach the bottom when dropped off a 60 m high cliff. Therefore, option (C) is correct.
What are equations of motion?The equations of motion are equations that are used to describe the motion of an object as a function of time. These equations apply to an object moving linearly in a straight line with uniform acceleration.
The three equations of motion are represented as:
[tex]v = u+at[/tex]
[tex]S= ut +\frac{1}{2} at^2[/tex]
[tex]v^2= u^2+2aS[/tex]
The initial velocity of the rock, u = 0
The acceleration of the rock, a= g = 9.8m/s²
The height that rock travel, S = 60m
From the equation of motion calculate the final velocity of the rock:
v² = (0)² + 2 ×9.8×60
v² = 1176
v = 34.29 m/s
From the equation of motion, calculate the time takes the rock to reach the bottom:
v = u+at
34.29 = (0) + (9.8) (t)
t = 3.5 sec
Therefore, the rock will take 3.5 seconds to reach the bottom.
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A box weighing 10 N is sitting on a surface that is tilted upward at a 45⁰ angle. The normal force is __________ 10 N.
a. equal to
b. less than
c. greater than
The normal force is less than the 10 N
Since we are given a box weight that is 10 N tilted at 45⁰, so the formula we refer from the figure to for calculating the normal force is:
N=mg⋅cos θ , where mg is the weight of the box and θ is the angle at which the box is shifted.
The flatter the incline to be, the normal force becomes greater. The littler an angle gets to be making the greater the esteem of cosine gets to be, and along these lines the greater the normal force becomes.
So, we get that the normal force will be
= 10 cos 45 (Since the value of mg is 10 N and θ = 45⁰)
= 7.07 N
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A projectile is shot horizontally off the roof of a building with a speed of 45 m/s and falls to
the ground in 3.2 seconds.
a. What is the horizontal displacement of the projectile?
I
b. How high is the building?
I think that the awsand is 147.2 .
Two of the tires on a tractor-trailer have 1.5 m diameters. If the tractor-trailer travels at a linear velocity of 3.0 m/s, what is the angular velocity of each tire?
Remember:
Δω=Δθ/Δt
v=rw
a.
2.0 rad/s
c.
4.0 rad/s
b.
2.3 rad/s
d.
4.5 rad/s
The angular velocity of each tire from the calculation that we have done is 4.0 rad/s.
What is the velocity?Let us recall that the linear velocity is the rate of the change of the displacement of an object with time. We now know that it is possible to relate the angular velocity with the linear velocity by the use of the equation;
v=rw
We now have
v = lnear velocity
r = radius
w = angular velocity
w = v/r
w = 3.0 m/s/(1.5 m/2)
w = 4.0 rad/s
Thus we obtain that we have found the angular velocity as 4.0 rad/s.
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5 MAIN REASONS WHY PHYSICAL EDUCATION IS GOOD TO DO
Answer:
It Encourages Healthy Habits.
It Reduces Stress
It Encourages Prosocial Behavior
It Promotes Good Sleep.
It Helps Students Concentrate
hope it helps you
how does the distance traveled by the bullet compare with the distance traveled by the rifle in the same time, and why?
The comparison between the distance traveled by the bullet compared with the distance traveled by the rifle at the same time shows that the bullet travels faster than the rifle due to greater acceleration.
Newtown's third law of motion states that for every action there is a reaction having equal magnitude but opposite direction.
In the case of bullet and rifle, both experience the same amount of force that is equal in magnitude but opposite in direction.
In physics, mass and acceleration have an indirect relation with each other i.e a = F/m. More mass means less acceleration and vice versa.
A rifle has a smaller amount of acceleration than a bullet. It is because the mass of the rifle is greater than the bullet therefore it covers less distance a s compare to a bullet having less mass and greater acceleration and thus travels faster.
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At which location could you obtain groundwater without having to use a pump? What is this location called?
I have to get it done right now
Answer:If a hole is dug into the ground deep enough that it reaches a confined aquifer, the pressure can be great enough to shoot water up the well without any help from a pump. Such a well is called a flowing artesian well
Explanation:
A golf ball moving forward with 1 unit of momentum strikes and bounces backward off a heavy bowling ball that is initially at rest and free to move. The bowling ball is set in motion with a momentum of.
A golf ball shifting ahead with 1 unit of momentum moves and bounces backward off a heavy bowling ball this is initially at relaxation and free to move. The bowling ball is ready in movement with a momentum of extra than 1 unit.
The bullet's mass is less than the gun's mass so the bullet's pace is greater than the gun's cringe speed. also, kinetic power is inversely proportional to mass. whilst a bullet is fired from a weapon, the weapon kicks within the opposite route. The motive for this is the pressure on the ball referred to as reaction.
Because the mass of the golf ball is greater than the mass of the bullet, the weapon recoils tons slower than the bullet's actions forward. A bowling ball this is desk-bound or transferred in a bowling alley does no gravitational work due to the fact gravity acts perpendicular to the surface. in step with Newton's third regulation of motion, each action has an equal and opposite reaction. when a gun fires a bullet it applies a force to the bullet that propels it forward.
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What is used on some electric and hybrid vehicles to cool the power electronics and charger modules?.
Thermal system is used on some electric and hybrid vehicles to cool the power electronics and charger modules.
What is thermal system?
An isolated system has no interaction with the rest of the physical universe, a closed system can only exchange heat and work, and an open system can also exchange mass. In thermodynamics, a system is the portion of the physical universe that the observer chooses to analyse separately from the rest.
A thermal system, on the other hand, is a complex assembly of coupled components, some of which are thermal, that exhibits a common structured behavior for instance, a refrigerator consists of pipes, a compressor, an electric motor, heat exchangers, valves, insulation, a casing, doors, a lamp, and other components that interact to achieve the internal goal of producing cold.
The interior space or the refrigerant are thermodynamic systems, whereas a refrigerator is a thermal system. While large thermal systems, like a refrigerated store, are constructed on the job site, small thermal systems, like a refrigerator, typically come fully installed from the manufacturer (although a straightforward split-air-conditioning system needs installation). Thermal systems often require services such as fuel supply, flue stack, water intake and exit, air intake and exit, and electrical supply (for power or at least for control).
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please please help me i will give out brainliest
