Scientists determine the masses of planets by observing the effect of the gravitational field of those planets on nearby objects - mainly upon their moons. By measuring the orbital period and orbital radius of a moon about a planet, Newton's laws of motion can be used to determine the mass of the planet. Phobos, a moon of the planet Mars, was discovered in 1877. It's orbital radius is 9380 km and its orbital period is 0.319 days (2.77 x 104 seconds). Determine the mass of Mars based on this data.

Answers

Answer 1

equal to 9380 into 10. To the power three m. T is equal to 2.77 into 10 to the power of four seconds. So the expression for finding the mass of mars as the Squire divided by r cube as equal to four Pi Square divided by G into em. So M will be equal to for by Squire. Our cue divided by G. The Squire. So now we can substitute the values That does four by Squire. indu 9380 into 10. to the power three all cube divided by Value of GS 6.67, 3 into 10 to the Power -11. Indu 2.77 into 10 to the power of four all Squire. By solving this, we will get the mosque as six point 363 into 10. to the power 23 kilogram


Related Questions

A plane is flying to Minnesota with a velocity of 373.52 km/h, N. The plane encounters a crosswind with a velocity of 64.90 km/h, W. What is the magnitude of the resultant velocity of the plane?

Answers

Answer:

  379.12 km/h N 9.86° W

Explanation:

You want to know the resultant velocity when a plane's velocity of 373.52 km/h N is modified by a crosswind at 64.90 km/h W.

Vector sum

In (N, E) coordinates, the sum of the velocities is ...

  (373.52, 0) +(0, -64.90) = (373.52, -64.90)

The magnitude of this vector is ...

  |v| = √(373.52² +64.90²) ≈ 379.12 . . . . km/h

The direction will be west of north by the angle ...

  θ = arctan(-64.90/373.52) ≈ -9.86° . . . . . . N = 0°, + = clockwise

The resultant velocity is 379.12 km/h N 9.86° W.

Mendeleev arranged elements in order for increasing?

Answers

Answer:   Relative Atomic Mass

Explanation:   The closer the element is to the bottom-right corner, the higher the relative atomic mass. Hydrogen has the lowest relative atomic number at 1, whereas Lawrencium has the highest relative atomic mass at 262.

How might these traits change from individual to individual? (Hint: Do you think the newts are all exactly the same color or size?)

Answers

Newts hatch in water, but they spend the most of their lives on land, returning to water only for mating.

They have rough skin, are 8 inches long, and have stubby legs and fangs. In the Pacific Northwest, some of them are toxic.

Rough-skinned newts have brown skin on their backs and bright orange skin on their bellies. When frightened by predators, these newts coil their bodies and show off their orange necks and tails. Predators are warned to stay clear from this orange tint.

It is to be noted that none of the newts are the same traits that is color or size.

What are traits?

A phenotypic trait (simply trait or character state) is a distinct variety of an organism's feature that is visible and quantifiable and manifests itself in an observable manner.

For example, eye color (green, blue, brown, and hazel) is a phenotypic feature that is passed down by polygenetic inheritance.

Height, wing length, and hair color are all phenotypes. Phenotypes also include observable traits that may be evaluated in the lab, such as hormone levels or blood cell counts.

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Which has the most momentum?
C: 150 g object at 5 m/s
D: 200 kg object at 2 m/s
A: 50 kg object at 5 m/s
B: 100 kg object at 10 m/s

Answers

Option D) 200 kg object at 2 m/s has the highest momentum.

What is momentum?

Momentum is calculated using Newtonian mechanics by multiplying an object's mass by its velocity.As a vector quantity with both a magnitude and a direction, it has both. Considering that an object's mass is m and its speed is v (also a vector quantity),

Momentum formula,                P = mv

p = momentum

m = mass \ velocity

The newton-second is a unit of measurement for momentum in the International System of Units (SI), and the kilogram metre per second (kg m/s) is its SI counterpart.

A) 50 kg object at 5 m/s

m = 50 kg

v = 5 m/s

Momentum, p = m x v

                       = 50 x 5

                       = 250 kg m/s

B) 100 kg object at 10 m/s

m = 100 kg

v = 10 m/s

Momentum, p = m x v

                       = 100 x 10

                       = 1000 kg m/s

C) 150 g object at 5 m/s

m = 150 g

    = 0.15 kg

v = 5 m/s

Momentum, p = m x v

                       = 0.15 x 5

                       = 0.75 kg m/s

D) 200 kg object at 2 m/s

m = 200 kg

v = 2 m/s

Momentum, p = m x v

                       = 200 x 2

                       = 400 kg m/s

Hence, Option B has the highest momentum.

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In Graph C above, which line(s) shows an object that has a constant
velocity?

Answers

C and D because it remains constant gradient

Answer:

it's D that has a constant velocity

A student is performing bomb calorimetry for a combustion reaction. The bomb calorimeter normally holds 5 L of water with a heat capacity of 4.184 J/g•°C. However, the student misread the directions and used 6 L of ethanol which has a heat capacity of 2.46 J/g•°C. If the student calculates the energy released by the reaction assuming it was 5 L of water, what will be the difference between the actual energy of the reaction and the calculated energy? Note: the densities of ethanol and water under normal conditions are 0.8 g/mL and 1.0 g/mL, respectively.

Answers

The difference between the actual heat energy of the reaction and the calculated heat energy is 9092ΔT.

What is the heat energy released if 6 L of are used for a combustion reaction?

The heat energy released if 6 L is used for a combustion reaction is calculated as follows:

Heat change = mcΔT

where;

m is massc is the specific heat capacity ΔT is temperature change

when 6.0 L of ethanol was used;

Mass of ethanol = volume * density

The volume of ethanol = 6.0 L or 6000 mL

Mass of ethanol = 6000 * 0.8

Mass of ethanol = 4800 g

Heat change = 4800 * 2.46 * ΔT

Heat change = 11808ΔT

If 5.0 L of water was used:

Mass of ethanol = volume * density

The volume of ethanol = 5.0 L or 6000 mL

Mass of water = 5000 * 1.0

Mass of ethanol = 5000 g

Heat change = 5000 * 4.18 * ΔT

Heat change = 20900ΔT

Heat difference = 20900ΔT - 11808ΔT

Heat difference = 9092ΔT

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A soccer coach is working with a device that measures the velocity of a soccer ball after it has
been kicked.
Which units should the coach use for velocity?
Choose 1 answer:

meters per second
kilograms
meters

Answers

meters per second

What is Velocity?

The pace at which an object's position changes in relation to a frame of reference and time is what is meant by velocity. Although it may appear sophisticated, velocity is just the act of moving quickly in one direction. Since it is a vector quantity, the definition of velocity requires both magnitude (speed) and direction. Its SI equivalent is the meter per second (ms-1). A body is considered to be accelerating if the magnitude or direction of its velocity changes.

Therefore, it will measured in meters per second.

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Does Monera move?

20 points

Answers

The Monera kingdom includes organisms that move in a variety of ways, such as rotating on axial filaments, gliding on secreted slime, or using their flagella.

Answer:

Prokaryotic Bacteria

Explanation:

A 0.056 kg sample of an unknown substance is heated to 89.6 °C in a hot water tube. It is then quickly removed and placed into an insulated jar holding 188 ml of water initially at 132.8° F. The final equilibrium temperature of the system is 67° C. What is the specific heat of this unknown substance?

Answers

The specific heat of the unknown substance is 6.84 J/gºC

How do I determine the specific heat capacity?

First, we shall convert 132.8° F to ° C. Thisis illustrated below:

Temperature (° F) = 132.8 ° FTemperature (° C) =?

°C = (°F − 32) × 5/9

°C = (132.8 − 32) × 5/9

°C = 56 °C

Next, we shall determine the heat absorbed by the water. This is illustrated below:

Volume of water (V) = 188 mLDensity of water (d) = 1 g/mLMass of water (M) = dV = 1 × 188 = 188 gInitial temperature (T₁) = 56 °CFinal temperature (T₂) = 67 °CChange in temperature (ΔT) = 67 - 56 = 11 °CSpecific heat capacity of copper (C) = 4.184 J/gºC Heat absorbed (Q) =?

Q = MCΔT

Q = 188 × 4.184 × 11

Q = 8652.512 J

Finally, we shall determine the specific heat capacity of the unknown metal. This can be obtained as follow:

Heat absorbed (Q) = 8652.512 JHeat released (Q) = -8652.512 JMass of unknown substance (M) = 0.056 kg = 56 gInitial temperature (T₁) = 89.6 °CFinal temperature (T₂) = 67 °CChange in temperature (ΔT) = 67 - 89.6 = -22.6 °CSpecific heat capacity of unknown substance (C) = ?

Q = MCΔT

-8652.512 = 56 × C × -22.6

-8652.512 = C × -1265.6

Divide both sides by -1265.6

C = -8652.512 / -1265.6

C = 6.84 J/gºC

Thus, the specific heat capacity is 6.84 J/gºC

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An object with a mass of 33g and a volume of 39cm^3 is placed in a liquid with a density of 1.25 g/cm^3. Find the volume of the part of the object that is NOT submerged in the liquid. Give your answer in cm^3 and with 3 significant figures.

Answers

Answer:

V₂ = 12.6 cm³ -  volume of the NOT immersed part:

Explanation:

Given:

m = 33 g

V = 39 cm³

ρ = 1.25 g/cm³

____________

V₂ - ?

Gravity:

F = m·g

Strength of Archimedes:

Fa = ρ·g·V₁

V1 - the volume of the submerged

The object is floating, so:

F = Fa

m·g = ρ·g·V₁

m = ρ·V₁

V₁ = m /  ρ = 33 / 1.25 ≈ 26,4  cm³

V₂ - volume of the NOT immersed part:

V₂ = V - V₁ = 39 - 26.4 = 12.6 cm³

Which one of the following is true of centrifugal force?



Centrifugal force is a fictional force.

Centrifugal force is a real force.

Centrifugal force pulls in a circular motion.

Centrifugal force causes objects moving in a circular path to move in.

Answers

Answer:

a is answer

Explanation:

centrifugal force, a fictitious force, peculiar to a particle moving on a circular path, that has the same magnitude and dimensions as the force that keeps the particle on its circular path (the centripetal force) but points in the opposite direction.

I'm stuck on b(i), because I don't understand what equation to use with what values.

Answers

Answer:

Apparently, it takes 3 * 5E-3 sec to travel from D to G

The distance is given as .68 m

V = S / t = .68 m / (3 * 5E-3 s) = 45 m/s

Interpret information to make judgment.
The teacher is showing the class an experiment using a radioactive source. She insists on these safety precautions
a) No students may sit in the front row
b) The radioactive source is kept in a lead box when not in use.
Explain why each of these precautions is important.

Answers

These precautions are important to avoid radiation effects. Lead is powerful in shielding nuclear substances because of its physical residence.

It is dense and difficult, which means it is able to block x-rays and gamma rays from penetrating thru the cloth. whilst these radioactive waves touch the steel, they collide with the lead atoms and get dispersed

Lock radioactive stock materials and sealed assets in a secured box or a secured storage vicinity when not in use. A stock fabric is a radioactive material as provided by using the vendor and does no longer include material withdrawn from the original inventory for experimental use.

You must generally hold radioactive resources, along with any radioactive waste that's in the garage, in suitable boxes internal an appropriate store to defend against unintended harm or loss and to guard employees and the majority.

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Pls draw me what a velocity time graph would look like : moving at a positive constant speed to then at rest? Thank you!!!

Answers

Answer:

See below

Explanation:

Here are a couple of options..... one where the object slows to a rest and the other where the object stops to a rest instantaneously

I have three energy levels, with 10 electrons in my outer energy level. What am I?

Answers

I have three energy levels, with 10 electrons in my outer energy level. I am calcium.

What are energy levels?

Energy levels refer to the regions around an atom where electrons can be found.

The energy levels are given by the principal quantum number, n.

Electrons in an atom are arranged in energy levels.

An atom that has three energy levels belong to period 3 of the periodic table.

The outermost energy level for an atom that has three energy levels is energy level 3.

The atom that has 10 electrons in the outermost energy level of 3 will have 10 + 8 + 2 electrons = 20 electrons.

The element is calcium.

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What role does fiction play in sport of your choice? Collect one picture of that sport in action where friction either supporting it or opposing it​

Answers

Supporting friction:
1) Cycling - the friction between the tires and the road are necessary for the bike to function

2) Running - the friction between the athlete's feet and the ground surface is necessary otherwise the runner would fall over

3) Swimming - the friction in the water is required for the swimmer to be propelled forward
-

Opposing friction

1) Swimming - the friction makes it more difficult for the swimmer to swim very fast

2) Bobsleigh - the aim is to go as fast as possible but the friction between the bottom of the sleigh and the ice slows it down

3) Diving - the friction between the diver and the water creates wasted Kinetic energy and sound energy whereas the aim is to be as streamlined as possible

a sample of cube X is shown above. If it’s mass is 244.4 mg, what is its density in g/cm^3

Answers

The density of the cube is 1.1 g/cm³

What is density?

Density is described as the substance's mass per unit of volume. Mathematically, density is defined as mass divided by volume: density (rho) =mass/ Volume where ρ is the density, m is the mass, and V is the volume.

mass of cube= 244.4mg

volume of cube = 222.2 cm³

density = mass/ volume

density = 244.4/ 222.2 cm³

density = 1.1 g/cm³

Density is essentially a measurement of how tightly matter is packed together. density is a unique physical property of a particular object.

In conclusion, the principle of density was discovered by the Greek scientist Archimedes.

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a spiral spring loaded with a piece of metal extends by 9.4cm. when the metal is fully immersed in water, the spring extends by 3.5cm. assuming Hooke's law is obeyed, calculate the relative density of the metal​

Answers

The relative density of the metal that is on a spiral spring which extends 9.4 cm in air and 3.5 cm in water is 1.59

RD = Weight of body in air / Upthrust

RD = Relative density

F = - k x

F = Spring force

k = Spring constant

x = Displacement

RD = - k ( 9.4 ) / - k ( 9.4 - 3.5 )

RD = 9.4 / 5.9

RD = 1.59

Relative density is the ratio of density of the substance to the density of the reference material. Density is the ratio of mass to volume. The unit of density is kg / m³. Relative density has no unit since it is density divided by density.

Therefore, the relative density of the metal​ is 1.59

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A 50.0-kilogram cheetah has a kinetic energy of 18000J How fast is the cheetah running ? ( Hint : Rearrange the equation to solve for v .)
I found that people say it’s 36 but there is no explanation for it

Answers

Answer:

Explanation:

here take kinetic energy =1/2×m×v²

m=50.0-kilogram (given)

kinetic energy=18000J (given)

now by taking the given values we get v²=(2×18000)/50

⇒v²=720

⇒v=26.8328m/s

done!

function of a transformer in electrical circuits​

Answers

Explanation:

There two types of transformers which are mainly stepup and step down transformers

the former is used for increasing voltage while the latter is used for reducing voltage

Three masses are connected as shown on a smooth horizontal surface.
(Take acceleration due to gravity as 9.8ms^-2)
a)Calculate the acceleration of the mass M3.
b)Calculate the tension in each string.
c)If the surface was not smooth describe how:
1.the acceleration of the system would be affected.
2.the tension in each string would be affected.

Answers

a) The acceleration of the mass M3 is 14.42 m/s².

b) The tension in each string. is : T₁  = 5119 N.

T₂= 7714 N.

And T₃ . = 12833 N.

c) If the surface was not smooth, there will be a frictional force which lessen both tension and acceleration of the system.

What is acceleration?

Acceleration is rate of change of velocity with time. Due to having both direction and magnitude, it is a vector quantity. Si unit of acceleration is meter/second² (m/s²).

Let the acceleration of the system = a.

And the tension in each string is T₁ , T₂  and T₃ respectively.

Then for M₁ mass;

tension in string T₁  = M₁a

For M₂ mass:

tension in string T₂ = M₂ a

For M₃ mass:

tension in string T₃ - M₃g = M₃ a.

⇒T₃ =  M₃g + M₃ a.

And T₃ = T₁ + T₂.

⇒M₃g + M₃ a. =  M₂ a +  M₁a

⇒ a = M₃g/( M₁ +M₂ -M₃)

= 530× 9.8/ (355+535-530)

= 14.42 m/s².

Then, the tension in each string is T₁ = 355 * 14.42 N = 5119 N.

T₂ = 535×9.8 N = 7714 N.

And T₃ = T₁ + T₂ = 5119 N +7714 N. = 12833 N.

If the surface was not smooth, there will be a frictional force which lessen both tension and acceleration of the system.

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Find the resultant force of 16N and the force of 25N acting at the same point on an object if the Force at : (1) In the same direction in the same line. (11) In the opposite direction but in the same straight line. (111) At right angles to each other.​

Answers

1 ) Resultant force if the forces act in the same direction = 41 N

2 ) Resultant force if the forces act in the opposite direction = 9 N

3 ) Resultant force if the forces act at right angles to each other = 29.68 N

F1 = 16 N

F2 = 25 N

1 ) If the forces act in the same direction,

F = F1 + F2

F = 16 + 25

F = 41 N

2 ) If the forces act in the opposite direction,

F = F2 - F1

F = 25 - 16

F = 9 N

3 ) If the forces act at right angles to each other,

F² = F1² + F2²

F² = 16² + 25²

F² = 256 + 625

F² = 881

F = 29.68 N

Therefore,

1 ) F = 41 N

2 ) F = 9 N

3 ) F = 29.68 N

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what happens to the reflection when it hits the triangular prisms? the reflection is from air to glass. critical angle=42° please help me i need it right now:( ​

Answers

Answer: TIR (total internal reflection) occurs

Explanation: TIR occurs because the angle of refraction reaches a 90-degree angle before the angle of incidence reaches a 90-degree angle. The only way for the angle of refraction to be greater than the angle of incidence is for light to bend away from the normal. Since light only bends away from the normal when passing from a more dense medium into a less dense medium, then this would be a necessary condition for total internal reflection.

I agree with this tip comment I have solved this equation and I have gotten what the top comment says

Honey is a technology company that provides online coupons to its subscribers. Honey's analytics staff has developed a classification method to predict whether a customer who has been sent a coupon will apply the coupon toward a purchase. For a sample of customers, the following table lists the classification model's estimated coupon usage probability for a customer. For this particular campaign, suppose that when a customer uses a coupon, Honey receives $1 in revenue from the product sponsor. To target the customer with the coupon offer, Honey incurs a cost of $0.05. Honey will offer a customer a coupon as long as the expected profit of doing so is positive. Using the equation
Expected Profit of Coupon Offer = P(coupon used) × Profit if coupon used + (1 - P(coupon used)) × Profit if coupon not used
determine which customers should be sent the coupon.

Customer Probability of Using Coupon
1 0.44
2 0.34
3 0.24
4 0.11
5 0.06

Determine the expected profit for each customer. Round your answers to the nearest cent. Enter negative value as negative number, if any.

Customer Expected Profit
1 $
2 $
3 $
4 $
5 $

The expected profit is positive for customers (Select your answer: 2 and 3, 4 and 5, 1, 2, and 33, 4, and 5, 1, 2, 3, and 4, 1, 2, 3, and 5, 2, 3, 4, and 5, 1, 2, 3, 4, and 5) so these customers (Select your answer: should be offered or should not be offered) the coupon.

Answers

The expected profit is positive for the customers 1, 2, 3, 4, 5.

What is expected profit?

This is the term that is used to refer to the gain that would be expected to be gotten based on the fact that a person has engaged in a business.

We have 1 - 0.05 = 0.95 profit if the coupon is used

-0.05 is the profit if the coupon is not used

for consumer 1

the probability = 0.44

expected profit = 0.44 x 0.95 - 0.05 x 0.56

= 0.418 - 0.028

= 0.39

for consumer 2

the probability = 0.34

expected profit = 0.34 x 0.95 - 0.05 x 0.66

= 0.323 - 0.033

= 0.29

For consumer 3

the probability = 0.24

expected profit = 0.24 x 0.95 - 0.05 x 0.76

= 0.228 - 0.038

= 0.19

For consumer 4

the probability = 0.11

expected profit = 0.11 x 0.95 - 0.05 x 0.89

= 0.1045 - 0.0445

= 0.06

For consumer 5

the probability = 0.06

expected profit = 0.06 x 0.95 - 0.05 x 0.94

= 0.057 - 0.047

= 0.01

The expected profits can be listed as:

0.390.290.190.060.01

The expected profits are positive for all of 1, 2, 3, 4, and 5, hence these customers can purchase the coupon.

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Please help! I don't understand how to do this!

A babysitter pushing a stroller starts from rest and accelerates uniformly at a rate of 0.778 m/s^2. What is the velocity of the stroller after it has traveled 5.54 m?

Answers

A babysitter pushing a stroller starts from rest and accelerates uniformly at a rate of 0.778 m/s^2.  The velocity of the stroller after it has traveled 5.54 m will be 2.94 m/s

acceleration = 0.778 [tex]m/s^{2}[/tex]

distance = 5.54 m

initial velocity = 0

velocity of the stroller after it has traveled 5.54 m = ?

2as = [tex]v^{2} - u^{2}[/tex]

2 * 0.778 * 5.54 = [tex]v^{2}[/tex] - 0

v = 2.94 m/s

The velocity of the stroller after it has traveled 5.54 m will be 2.94 m/s

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A car is initially moving at 10.5 m/s and accelerates uniformly to reach a speed of 21.7 m/s in 4.34 s. How far did the car move during this
acceleration?

Answers

The care travelled a distance of 69.87 m.

What is acceleration?

Acceleration is rate of change of velocity with time. Due to having both direction and magnitude, it is a vector quantity. SI unit of acceleration is meter/second² (m/s²).

Given parameters:

Initial velocity of the car; u = 10.5 m/s.

Final velocity of the car; v = 21.7 m/s.

Time; t = 4.34 s.

The acceleration of the moving car; a = (Final velocity of the car - Initial velocity of the car)/time

= (  21.7 m/s -  10.5 m/s)/4.34 s.

= 2.58 m/s².

Hence, the car move  a distance during this acceleration; s = ut +1/2 at²

= 10.5×4.34 + 1/2 × 2.58×4.34² m.

= 69.87 m.

Hence, the car move a distance of 69.87 m during this acceleration.

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Move over Jeff Bezos, this invention is about to make you the richest person in the world. You have just invented the OyOy (that's YoYo spelled backwards). It is the very latest in home safety and so easy to use!

If your building is on fire, simply reach out and grab the cord on the OyOy and you will be lowered safely toward the ground at a low velocity. The OyOy has a total mass M = 95.0 kg and is shaped like a cylinder of radius R = 0.940 meters. The secret to the operation of the OyOy is its patented shaft whose radius is only r = 0.0900 meters. The cord is wound around the small shaft and this is the secret to your low velocity.

We will use the approximation that the shaft is of negligible mass compared to the total. This means that you can treat the entire OyOy as though it is a solid cylinder with mass M and radius R. Imagine that a customer of mass m = 78.5 kg is using the OyOy and begins his decent from an initial height of y0 = 12.55 meters.

Find velocity of customer at ground.

Answers

Answer: The correct answer is 144.716

Explanation: This is the correct answer because the velocity of the customer at ground is higher than it should be

A tennis ball with a mass of 0.2 kg is thrown upwards from the ground at a velocity of 30 m/s. What
is the height of the ball when it has a velocity of 20 m/s?

Answers

The height of the ball when it has a velocity of 20 m/s is 45m.

What is mass?

It is the most fundamental feature of matter and one of the fundamental quantities in Physics. Mass can be defined as the amount of matter in a body. Kilogram is the SI unit of mass (kg).

It should be noted that a body's mass does not alter with time. Only in severe instances where a massive amount of energy is provided or removed from the body. In a nuclear reaction, for example, a tiny bit of matter is turned into a massive amount of energy, reducing the mass of the substance.

Given Initial velocity of ball, u=30 m/s

Let the maximum height reached and time taken to reach that height be H and t respectively.

Assumption: g=9.8 m/s2

 holds true (maximum height reached is small compared to the radius of earth)

30/g=30/9.8=3 seconds

as the time taken to reach max height.

h(3)=-4.9(3²)+30(3)

=90–45

=45m

The height of the ball when it has a velocity of 20 m/s is 45m.

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Brooke is learning about electronic devices that use electric current to encode information. She learns that when a person speaks into the microphone of a telephone, the sound wave generated by the person’s voice is changed into an electronic signal. This electronic signal is then transmitted to another telephone where it is converted back to a sound wave so the other person can hear the voice. The sound wave is encoded by varying the voltage of the electronic signal. Brooke learns that the voltage can be changed in two ways, resulting in two types of electronic signals: analog and digital. Figure 1 and Figure 2 represent these two types of signals.


Identify the type of signal represented by each figure. Explain your reasoning.

Answers

The signals in this problem are classified as follows:

Figure 1: Digital signal.Figure 2: Analog signal.

What are analog and digital signals?

Analog signals are signals that are continuous in both domain and range, meaning that it can assume decimal values, hence it's graph is represented by a continuous curve.

Digital signals are signals that are discrete in both domain and range, meaning that it assumes only integer values, hence it's graph is composed by pulses.

Hence the classification of the signals for each figure in this problem are given as follows:

Figure 1: Digital signal, as the graph is composed only by pulses.Figure 2: Analog signal, as the graph is represented by the continuous and oscillating curve.

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does the current stays the same throughout in a parallel circuit

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Answer:

When the current splits, the current in each branch after the split adds up to the same as the current just before the split.

No, the current is not constant across the entire parallel circuit.

The circuit is known to be divided into branches by the parallel connection. Consequently, those branches are formed from the total current.

A parallel circuit may have one or more branches. The total current splits into its corresponding branches as soon as it enters one. Less current flows through the branches than across the entire system. The branch resistance affects the branch current values. In parallel circuits, the current is therefore different. All components in a parallel arrangement share the same voltage.

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