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

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.

A program that could do an instantaneous analysis of video motion will be useful it in a sportscast to analyze events as they occur.

A motion video is defined as the display of video images at a rate (such as thirty frames per second) that causes objects to appear to move smoothly and continuously.

Sports inherently involve fast and accurate motion, which can be difficult for competitors to master but also for coaches and trainers to analyze and audiences to follow. Because of the nature of most sports, monitoring with sensors or other devices attached to players or equipment is generally not possible. This opens up a plethora of opportunities for the use of computer vision techniques to assist competitors, coaches, and the audience

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The relative velocity of two vehicles moving in the same direction will be 42 m/s, whereas the relative velocity of two vehicles moving in different directions will be 8 m/s.

Let the velocities of the two vehicles be, v1 and v2, respectively.

Given,

The velocity of the first vehicle (v1) = 24 m/s

The velocity of the second vehicle (v2) = 18 m/s

Case-1

When they are moving in a same direction,

The relative velocity (V) of the two vehicles will be the sum of their velocities, i.e.,

V = v1 + v2

=> V = 24 + 18

=> V = 42 m/s.

Case-2

When the vehicles are moving in different directions,

The relative velocity (V) of the two vehicles will be the difference between the velocities, i.e.,

V = v1 - v2

=> V = 24 - 18

=> V = 6 m/s.

Therefore, The relative velocity of two vehicles moving in the same direction will be 42 m/s, whereas the relative velocity of two vehicles moving in different directions will be 8 m/s.

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This situation defies the laws of physics because the force required to stop the person from touching the ground would be too great that it would be equally fatal.

The first law to be considered is that an object will continue moving at a constant acceleration unless there is an unbalanced force that interrupts this. In other words the person will fall unless the supehero force is equally strong to the accelaration.

The main problem is that the superhero's speed and force would have to be about 160 miles per hour or even more to "save" the person. However, this would be even more dangerous than being hitted by a car and the person would immediately die due to the impact.

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Answer:

216 m/s

Explanation:

Final velocity will be resultant of the initial horizontal velocity ( 180 m/s) and the vertical velocity from falling  734.7 m

Verital   vf = at     need to find time

             df = 734.7 = 1/2 a t^2

                                  t= 12.2 sec

vf = at

   = 9.81 (12.2) = 120 m/s

Just before hotting the ground,

   resultant velocity = sqrt(180^2 + 120^2) = 216 m/s

The care travelled a distance of 69.87 m.

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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The signals in this problem are classified as follows:

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:

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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.

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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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.

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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The force needed to remove the plug that is 6.000 cm in diameter which plugs an opening in a spherical container 1.000 m in diameter at atmospheric pressure is 85 N

P = F / A

P = ρ g h

P = Pressure

F = Force

A = Area

ρ = Density

g = Acceleration due to gravity

h = Height

ρ = 1000 kg / m³

g = 9.8 m / s²

h = 10 ft = 3.048 m

A = π r²

d = 6 cm = 0.06 m

r = d / 2 = 0.06 / 2

r = 0.03 m

A = 3.14 * 0.03 * 0.03

A = 0.002826 m²

Equating both formulae of P,

F / A = ρ g h

F = 1000 * 9.8 * 3.048 * 0.002826

F = 85 N

Therefore, the force needed to remove the plug is closest to 85 N

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The amount of work done on the crate to change its velocity is 211.1 J.

The work done on the crate to change its velocity is calculated by applying the principle of conservation of energy as shown below.

Applying work-energy theorem, the work done in changing the velocity of the crate is equal to the change in kinetic energy of the crate as shown below;

W = ΔK.E

W = ¹/₂m(v₂² - v₁²)

where;

W = ¹/₂m(v₂² - v₁²)

W = ¹/₂(32)(5.1² - 3.58²)

W = 211.1 J

Thus, the amount of work done on the crate to change its velocity from 3.58 m/s at 37.0 ∘ west of north to  5.10 m/s in a direction 63.0 ∘ south of east, is based on the principle of conservation of energy.

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

What is momentum?

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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[tex]{ \boxed{ \red{ \sf{W = 10370.652 \: J}}}}[/tex]

Explanation:

Given,

[tex]{ \blue{ \sf{μ = 3}}}[/tex]

[tex]{ \blue{ \sf{ T= 300K}}}[/tex]

[tex]{ \blue{ \sf{ V_{1} = 4L}}}[/tex]

[tex]{ \blue{ \sf{ V_{2} = 1L}}} [/tex]

[tex]{ \blue{ \sf{W = \: ?}}}[/tex]

[tex]{ \blue{ \sf{R = 8.31 \: J/mol/K}}}[/tex]

[tex]{ \purple{ \sf{W = μRT \: l_{n}[ \frac{ V_{2}}{ V_{1} }}]}} [/tex]

[tex]{ \purple{ \sf{W = μRT[ l_{n} V_{2} - l_{n}V _{1}}]}}[/tex]

[tex]{ \purple{ \sf{W = 2.303μRT[ log_{1} - log_{4}]}}}[/tex]

[tex]{ \purple{ \sf{W = 2.303 \times 3 \times 8.31 \times 300(0 - 0.6021)}}}[/tex]

[tex]{ \purple{ \boxed{ \green{ \sf{W = 10370.652 \: J}}}}}[/tex]

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

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

where;

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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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

The example of projectile is a basketball being shot by Steph Curry.

Projectile is any object propelled through space by the application of a force.

Projectile is used to describe any object that is cast, fired, flung, heaved, hurled, tossed, or thrown. For example, when a ball is thrown straight upward, or kicked.

In projectile motion, gravity is the only force acting on the object. This doesn’t necessarily mean that other forces do not act on it, just that their effect is minimal compared to gravity. The path followed by a projectile is known as a trajectory.

Other examples of projectile is as follows:

Therefore, it can be said that a basketball being shot by a renowned basket baller into the air is an example of projectile.

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Answer:

See below

Explanation:

See diagram below

8 seconds to 60 m/s     then    60 m/s for 22 seconds then   to 0 m/s in 5 seconds

To achieve an increase in the current delivered in the USB 3.1 port, at a constant voltage, the several USB ports must be connect in parallel to each other. This will ensure an increase in current and constant voltage.

According to ohms Law the current flowing through an ohmic conductor is directly proportional to the voltage across the conductor.

V = IR

where;

I = V/R

To increase the current at a constant voltage, the resistance must decrease.

In a parallel circuit, the current flowing in each circuit component is different while the voltage drop in each circuit component is the same.

Thus, to increase the current delivered in the USB port, and maintain the initial voltage, the several USB ports must be connect in parallel to each other.

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The density of the cube is 1.1 g/cm³

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

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

°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:

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:

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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The acceleration of the falling object with a mass of 2.55 kg that encounters 4.0 N of air resistance is 1.57m/s².

Acceleration is change of velocity with respect to time (can include deceleration or changing direction).

The acceleration of a body can be calculated by using the following expression;

a = F/m

Where;

According to this question, a mass of 2.55 kg encounters 4.0 N of air resistance. The acceleration of the object can be calculated as follows:

a = 4N ÷ 2.55kg

a = 1.57m/s²

Therefore, 1.57m/s² is the acceleration of the object.

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

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:

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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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.

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

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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1) The force on the ball is 20 N

2) The acceleration of the cannon is 2m/s2.

State Newton's 2nd law of motion

Newton's second law of motion, which is what we utilize, asserts that,

                                                   F= m x a

where:

F is the total force in newton.

m is the object's mass in kilograms.

In meters per second squared, a represents the object's acceleration.

1) Using this we find the force on the ball,

F = m x a

  = 1 x 20

  = 20 N

2) Newton's law states that every actoin has an equal and opposie reaction. Thus the force on the cannon, Fc will be equal to the force acting on the ball, Fb while it was shooted.

As such we can find the acceleration of the cannon using the equation:

Fc = Fb

m1 x a1 = m2 x a2

10 x a = 1 x 20

a = 20/10

a = 2 m/s2

Hence,

1) The force on the ball is 20 N

2) The acceleration of the cannon is 2m/s2.

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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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Because there is less resistance, it is simpler to maneuver their vehicle and requires less effort.

The definition of force is physics states that when a mass-containing object is pushed or pulled, it alters its velocity. The ability to change a body's resting and moving state is actually possessed by force, an external agent. It moves and has a certain size.

Things move and, more precisely, change their motion as a result of force. The forces of magnetic forces and gravity are two examples of natural forces that humans have encountered. These two forces don't need to be in close proximity to each other to work because they act at a distance.

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Answer:

I don't Know espero que le entiendas