28
If it takes 1,697 m to stop a car initially moving at 46 m/s, what distance is required to stop a car moving at a quarter
of the initial speed under the same conditions?

The optical effect that is essential to the visual experience of motion pictures is known as Persistence of Vision.

Persistence of Vision (POV) is a phenomenon of the eye where an image or object is perceived by the brain for a short period of time after the image or object has been removed from the viewer's sight. The phenomenon occurs because of the retina's temporary retention of visual images even after they have been seen.

The Persistence of Vision enables the human eye to perceive the illusion of motion when viewing a series of still images in rapid succession. This effect is the foundation for the creation of motion pictures. In films, a sequence of still images is displayed in rapid succession (typically at a rate of 24 frames per second) that simulates motion to the human eye, tricking it into believing that the images are moving in a fluid and natural way.

POV is an essential aspect of the visual experience of motion pictures as it allows filmmakers to create an illusion of motion using a series of still images. The human eye is capable of retaining images for a short period of time after they have disappeared from the field of vision, which makes this effect possible.

Learn more about Persistence of Vision here:

https://brainly.com/question/31607858

#SPJ11

Explanation:

3,800 seconds in hours is 1.055556

3,800 seconds in minutes is 63.33333

3,000 seconds in seconds is the same.

If the current that is circuit is tripled,  the power is increased by a factor of 9. Option D

The term power refers to the rate of doing work. Now if we have to obtain the work done by the use of the formula; P = I^2R

Now if the current that is circuit is tripled, the power is now obtained by;

P = (3I)^2R = 9I^2R hence the power is increased by a factor of 9.

Learn more about power  in a circuit:https://brainly.com/question/2933971

#SPJ1

Answer:

(a) The force, acting on object 'C' is approximately 2.66972 × 10⁻¹⁰ Newtons

(b) The distance of 'C' from 'A', in the direction particle 'B' if there is no  meters gravitational force acting on 'C' is appromimately 0.829 meters or 1.877 meters

Explanation:

The given parameters are;

The mass of particle, A, m₁ = 2 kg

The mass of particle, B, m₂ = 0.3 kg

The mass of particle, C, m₃ = 0.05 kg

The distance between particle 'A' and particle 'B', r₁ = 0.15 m

The distance between particle 'B' and particle 'C', r₂ = 0.05 m

(a) The gravitational force, 'F', is given as follows;

\(F =G \times \dfrac{m_{1} \times m_{2}}{r^{2}}\)

Where;

F = The force between the two masses

G = The gravitation constant = 6.67430 × 10⁻¹¹ N·m²/kg²

m₁ = The mass of object 1

m₂ = The mass of object 2

If 'C' is placed at 0.05 m from 'B', we have;

F₂₃ =  6.67430 × 10⁻¹¹ × 0.05 × 0.3/(0.05²) ≈ 4.00458 × 10⁻¹⁰

The gravitational force between force between particle 'B' and particle 'C', F₂₃ = 4.00458 × 10⁻¹⁰ N (towards the right)

F₁₃ =  6.67430 × 10⁻¹¹ × 0.05 × 2/(0.1²) ≈ × 10⁻¹⁰

The gravitational force between force between particle 'A' and particle 'B', F₁₃ = 6.6743 × 10⁻¹⁰ N (towards the left)

The force, 'F', acting on object 'C' = F₁₃ - F₂₃

F = (6.6743 - 4.00458) × 10⁻¹⁰ = 2.66972 × 10⁻¹⁰ N

The force, acting on object 'C' ≈ 2.66972 × 10⁻¹⁰ N

(b), When there is no gravitational force acting on 'C', let the distance of 'C' from 'A' = x

We have;

F₂₃ = F₁₂

\(F_{23} =G \times \dfrac{m_{1} \times m_{2}}{r_1^{2}} = F_{13} =G \times \dfrac{m_{1} \times m_{3}}{r_2^{2}}\)

By plugging in the values and removing like terms, we get;

\(\dfrac{0.3 \times 0.05}{(1.15 - x)^{2}} = \dfrac{2 \times 0.05}{x^2}\)

(1.15 - x)² × 2 × 0.05 = 0.3 × 0.05 × x²

0.1·x² - 0.23·x + 1.3225 = 0.015·x²

0.1·x² - 0.23·x + 1.3225 - 0.015·x² = 0

0.085·x² - 0.23·x + 0.13225= 0

x = (0.23± √((-0.23)² - 4 × 0.085 × ( 0.13225)))/(2 × 0.085))

x ≈ 0.829, or x ≈ 1.877

Therefore, the distance of 'C' from 'A', if there is no gravitational force acting on 'C', x ≈ 0.829 m, or x = 1.877 m, in the direction of 'B'

Answer:

d = 100.56 m

Explanation:

It is given that,

Force acting on the dog is 22.4 N

Angle at which the force is applied is 115 º

Work done is - 42.3 J

We need to find the distance covered by the dog. The work done by an object is given by :

\(W=Fd\cos\theta\)

d = distance covered by the dog

\(d=\dfrac{W}{\cos\theta}\\\\d=\dfrac{-42.5}{\cos(115)}\\\\d=100.56\ m\)

So, the dog moves a distance of 100.56 m.

Answer:

4.47 M.

Explanation:

I do Acellus and just got it correct!

Answer:

1)  10 kg-m/s

2)  2 kg

3)  20 m/s

Explanation:

The momentum of an object can be calculated using the equation:

\(\large\boxed{p=mv}\)

where:

\(\hrulefill\)

For this question we need to find the momentum of a bowling ball whose mass is 4.0 kg is rolling at a rate of 2.5 m/s.

Given values:

Substitute the given values into the momentum formula and solve for p:

\(p=4.0\;\text{kg} \cdot 2.5\;\text{m/s}\)

\(p=10\;\text{kg m/s}\)

Therefore, the momentum of the bowling ball is 10 kg-m/s.

\(\hrulefill\)

For this question we need to find the mass of a skateboard rolling at a velocity of 3.0 m/s with a momentum of 6.0 kg-m/s.

Given values:

As we want to find mass, rearrange the momentum formula to isolate m:

\(\large\boxed{m=\dfrac{p}{v}}\)

Substitute the given values into the formula and solve for m:

\(m=\dfrac{6.0\; \text{kg m/s}}{3.0\; \text{m/s}}\)

\(m=2\;\text{kg}\)

Therefore, the mass of the skateboard is 2 kg.

\(\hrulefill\)

For this question we need to find the velocity of a baseball with a mass of 0.5 kg and a momentum of 10 kg-m/s.

Given values:

As we want to find velocity, rearrange the momentum formula to isolate v:

\(\large\boxed{v=\dfrac{p}{m}}\)

Substitute the given values into the formula and solve for v:

\(v=\dfrac{10\; \text{kg m/s}}{0.5\; \text{kg}}\)

\(v=20\;\text{m/s}\)

Therefore, the velocity of the baseball is 20 m/s.

The hydrostatic force on the cube is 1000 N.

The hydrostatic force on an object submerged in a fluid is determined by the pressure exerted by the fluid on the object's surface. The formula to calculate the hydrostatic force is: force = pressure × area.

Given:

Side length of the cube (s) = - cm (assuming there might be a missing value, please provide a specific value for the side length in centimeters)

Depth of the water (h) = 1 meter

Density of water (ρ) = 1000 kg/m³ (approximate value, assuming it's pure water)

To calculate the hydrostatic force on the cube, we need to determine the pressure exerted by the water on the cube's surface and then multiply it by the surface area.

The pressure exerted by a fluid at a certain depth can be found using the formula: pressure = density × gravity × depth.

Pressure = ρ × g × h = 1000 kg/m³ × 9.8 m/s² × 1 m = 9800 Pa (Pascal)

Now, we need to calculate the surface area of the cube. Since the cube has six equal square faces, each with a side length of s, the total surface area is given by: surface area = 6 × s².

Finally, we can calculate the hydrostatic force:

Force = pressure × surface area = 9800 Pa × (6 × s²)

The hydrostatic force on the cube submerged in water depends on the side length of the cube, which is currently missing from the given information. Once the side length is provided, the force can be calculated using the formula for pressure and the surface area of the cube.

To know more about force, visit

https://brainly.com/question/30031783

#SPJ11

Among the given expressions, the correct one to find the angle in the drawing is option C) ? = tan(⁻¹)(⁵).

The expression tan^(-1)(5) represents the inverse tangent function, also known as arctan or atan. It is commonly used to find the angle when the ratio of the opposite side to the adjacent side is known. In this case, the expression suggests that the angle can be determined by taking the inverse tangent of 5. By plugging in the appropriate values and evaluating the expression, the angle can be obtained. It's important to note that without further context or information about the specific problem or drawing, it's challenging to provide a definitive answer. However, based on the given options, option C) ? = tan(⁻¹)(⁵) is the expression that can be used to find the angle.

To learn more about angle

https://brainly.com/question/26262923

#SPJ11

The ground state of a harmonic oscillator is the lowest energy state that the oscillator can have.

The average (expectation) values of potential energy and kinetic energy for the ground state of the harmonic oscillator can be calculated using the following formulas:

⟨V⟩ = 1/2 kx²

⟨T⟩ = 1/2 mω²x²

Where k is the spring constant, x is the displacement from equilibrium position, m is the mass of the oscillator, ω is the angular frequency, and ⟨V⟩ and ⟨T⟩ are the average potential and kinetic energies, respectively.

For the ground state of the harmonic oscillator, x is zero and the potential energy is at its minimum. Therefore, the average potential energy is:

⟨V⟩ = 1/2 kx² = 0

For the ground state of the harmonic oscillator, the kinetic energy is at its maximum and given by:

⟨T⟩ = 1/2 mω²x² = 1/2 ℏω

Where ℏ is the reduced Planck's constant.

So, in the ground state of the harmonic oscillator, the average kinetic energy is half of the energy spacing between the energy levels, and the average potential energy is zero. The relative magnitude of these two quantities depends on the values of the mass, spring constant, and angular frequency of the oscillator.

However, in general, the kinetic energy is greater than the potential energy in the ground state of the harmonic oscillator.

Learn more about harmonic motion below.

https://brainly.com/question/26114128

#SPJ1

J. J. Thomson used a beam of negatively charged particles to decide that atoms were not indivisible, but are actually composed of smaller parts.

The known lightest stable subatomic particle is the electron. It has an adverse charge. The English physicist J.J. Thomson made the discovery of the electron in 1897 while researching cathode rays. His discovery of electrons—originally referred to as corpuscles—revolutionized our understanding of atomic structure.

Under normal circumstances, the attraction between opposite electric charges holds electrons to the positively charged nucleus of atoms. The number of positive charges on the nucleus and the number of electrons in a neutral atom are the same.

Learn more about electron here:

https://brainly.com/question/12001116

#SPJ1

Answer:

B. Thomson used a beam of negatively charged particles.

Explanation:

The heat transfer and work for this process are 554.1 kJ and 47,000 J, respectively. The gas law equation (PV = nRT) is used to calculate the final volume.

Step 1: Identify known values and convert them into SI units. Volume = 0.2 m³Pressure = 300 kPa, Temperature = 400 °C, Mass = 1 kg

Step 2: Find the final volume of the system since the pressure is constant. The gas law equation (PV = nRT) is used to calculate the final volume. V₁ = nRT / PInitial volume, V₂ = 0.2 m³, pressure P = 300 kPa = 300,000 Pa, R = 0.287 kJ/kg K (gas constant), and n = m/M, where m = 1 kg and M = 18.01528 kg/kmol (molar mass of steam)

Hence, V₁ = (1 kg × 0.287 kJ/kg K × 673 K) / (300,000 Pa × 18.01528 kg/kmol)

= 0.0435 m³

Step 3: Find the work done during the process.

The work done, W = PΔV, where ΔV is the change in volume.ΔV = V₁ - V₂

= 0.0435 m³ - 0.2 m³

= -0.1565 m³

Hence, W = -300,000 Pa × -0.1565 m³

= 47,000 J (work done by the gas)

Step 4: Determine the heat transfer during the process.

Q = mCΔT, where C is the specific heat capacity of steam at constant pressure. C = 1.847 kJ/kg KΔT

= T₂ - T₁

= 400 °C - 100 °C

= 300 K

Hence, Q = 1 kg × 1.847 kJ/kg K × 300 K

= 554.1 kJ (heat absorbed by the gas)

Therefore, the heat transfer and work for this process are 554.1 kJ and 47,000 J, respectively.

To know more about heat transfer, refer

https://brainly.com/question/2341645

#SPJ11

Answer: Innovations originally designed for space vehicles, including artificial muscle systems, robotic sensors, diamond-joint coatings, and temper foam,

Explanation: make artificial human limbs more functional, durable, comfortable, and life-like.

Answer:

6544.07 J

Explanation:

From the question given above, the following data were obtained:

Distance (d) = 15 m

Force (F) = 628 N

Angle (θ) = 46°

Workdone (Wd) =?

The work done can be obtained by using the following formula:

Wd = Fd × Cos θ

Wd = 628 × 15 × Cos 46

Wd = 9420 × 0.6947

Wd = 6544.07 J

Therefore, the workdone is 6544.07 J

Answer:

It is an educated guess

Explanation:

let me know if the bottom ones need to be answered too.

Ballistic stretching works muscles through a variety of motions to increase flexibility. Ballistic stretching before exercise prepares the muscles for high-impact action. Consequently.

Ballistic Method It is the oldest technique for stretching exercises. This strategy employs quick movements. A joint or even a muscle can be stretched with only repetitive motions or activities around it. It is essential to warm up properly before beginning such a workout.

Ballistic stretching uses the velocity of a moving person or limb to push an object outside its inherent range of motion. You are "starting to warm up" or stretched by jumping into an extended posture and using your stretched muscles like a springtime to pull yourself out of it.

Learn more about Ballistic stretching here:

https://brainly.com/question/10661103

#SPJ4

Answer:

It can cause death by asphyxiation in minutes or a gas/air embolism. This can cause the blood vessels to rupture and cause hemorrhage

Explanation:

Inhaling helium from a pure helium pressurized tank can cause something called an 'air embolism'. This is eventually a bubble that was trapped in a blood vessel, and therefor blocks it. The blood vessels can then rupture and hemorrhage.

Short answer: The results of breathing in 100% pure helium is asphyxiation, which eventually causes death.

I hope this helps! (If this was a question which had multiple choice answers, feel free to post them in the comment section and I would be more than happy to give you a direct answer to the test.)

The given reaction is a nuclear reaction hat involves the emission of helium nucleus

Reason:

First part:

The given nuclear reaction is presented as follows;

\(\dfrac{225}{88} Ra \longrightarrow \dfrac{4}{2} He + \dfrac{222}{[\ ]} Rn\)

The value for the missing box; Required

Solution:

Let x represent the number in the missing box

Where the protons are conserved, the atomic number of the reactants and product are equal

Therefore, we have;

88 = 2 + x

∴ x = 88 - 2 = 86

x = 86

The missing box would be the number 86

Second part:

The nuclear reaction involves the emission of an helium nucleus from radium, Ra, to form a radon, Rn

The emission of an Helium nucleus (alpha particle) is a form of alpha decay

Learn more here:

https://brainly.com/question/17438493

Answer:

box A: 86

Box B: Alpha

Work is characterized as the resultant action when a force moves an object in the force's direction.

It is clear what the word "force" means. The terms "push" and "pull" are perfectly acceptable at this level to describe forces. An object does not have a force inside of it or within it. Another object applies a force to the first.

When two items come into contact with one another physically and interact, these kinds of forces are involved. Frictional, tensional, normal, air resistance, applied, and spring forces are examples of the several types of contact forces.

To know more about Force visit:

https://brainly.com/question/13191643

#SPJ9

C2H2O+4O2 → 3CO2 + 3H2O shows a combustion reaction.

Combustion reaction is chemical reaction of substances including oxygen and accompanied by the generation of heat and light. Lighted match is an example of a combustion reaction. Combustion reaction takes place in the presence of oxygen as a reactant and products given are carbon dioxide, water and heat.

Combustion is an exothermic reaction which means that energy is released. Heat and light are released in a combustion reaction. During exothermic reactions, bonds are broken, which allows the energy stored in the bonds to be released and perform work. Exothermic reactions are chemical reactions that produce heat in the product. We say that the heat flow q is negative when heat flows from the system to the surrounding. Thereby, exothermic reactions have negative ΔH of the reaction.

Types of combustion are:

Rapid Combustion, Spontaneous Combustion and Explosive Combustion.

To know more about combustion reaction, refer

https://brainly.com/question/15246277

#SPJ13

Answer:

6.25m

Explanation:

Given parameters:

Masses of the car  = 1000kg

Gravitational force  = 1.067 x 10⁻⁵N

Unknown:

Distance between them  = ?

Solution:

To solve this problem, we use the expression below from the universal gravitational law;

     Fg  = \(\frac{G x mass 1 x mass 2}{distance^{2} }\)  

G = 6.67 x 10⁻¹¹

     1.067 x 10⁻⁵  = \(\frac{6.67 x 10^{-11} x 1000 x 1000 }{d^{2} }\)  

             d  = 6.25m

The principle involved is the conservation of momentum, where the boat moves in the opposite direction to maintain total momentum zero.

The physics principle involved in the movement of the boat as the man jumps onto the jetty is the principle of conservation of momentum. According to this principle, the total momentum of an isolated system remains constant if no external forces act on it.

In this scenario, the boat and the man can be considered as an isolated system since there are no external forces acting on them. Initially, when the man is standing on the boat, the system is at rest, and the total momentum is zero.

When the man jumps off the boat and onto the jetty, he exerts a force on the boat in one direction. According to Newton's third law of motion, for every action, there is an equal and opposite reaction. As the man pushes off the boat, the boat experiences an equal and opposite force that propels it in the opposite direction.

Due to the conservation of momentum, the momentum gained by the boat in one direction is equal to the momentum lost by the man in the opposite direction. As a result, the boat moves away from the jetty, exhibiting a backward motion.

This principle can be mathematically expressed as:

Initial momentum of the system = Final momentum of the system

Since the initial momentum is zero, the final momentum of the system (including the man and the boat) must also be zero. The momentum gained by the boat ensures that the total momentum of the system remains conserved.

For more such information on: conservation of momentum

https://brainly.com/question/7538238

#SPJ8

Answer:

C: Energy of motion

Explanation:

Hypothesis after observation.

When a 5.00 m-long ladder, with all weighing of 200 n, rests among a smooth vertical type of wall, then the ladder, will be measured among the the height = 0.488 m.

If θ be the angle ladder makes with the plane

cos θ = 1.2 / 5

Tan θ = 4.04

Let the height a person of weight 600 N  can climb be h from the ground .

Distance from the base point  where ladder touches the floor  = h / tanθ

= h / 4.04

Total reaction force = total downward force

R = 200 + 600

800 N

Frictional force = μ R

= .2 x 800

= 160 N

Taking moment of force about the point on the ladder  where it  touches the floor  and balancing them

= 200 x 1.2 x .5 + 600 x   h / tanθ  = μ R x  1.2 / tanθ ( reaction  at the top point of ladder where it touches the wall is  R₁ and R₁ =μ R   )

= 200 x 1.2 x .5 + 600 x   h / tanθ  = 160 x 1.2 / tanθ

120  - 600 h / 4.04 = 47.52

120 - 47.52 = 600 h / 4.04

72.48= 148.51 h

h = 0.488  m  

To learn more about friction, refer: brainly.com/question/24338873

#SPJ4

Answer:

the angle of the vector, using the inverse tangent function, is approximately 14.04 degrees.

Explanation:

To find the angle of a vector with given x and y components, we can use the inverse tangent (arctan) function. The formula is as follows:

Angle = arctan(y-component / x-component)

Given:

x-component = 8

y-component = 2

Using these values, we can calculate the angle as:

Angle = arctan(2 / 8)

Calculating this expression, we find:

Angle ≈ arctan(0.25) ≈ 14.04 degrees

The value of the charge \(q = 5.26*10^{-6} C\).charge is a property of matter that causes it to experience a force when placed in an electromagnetic field.

Equation can be used to determine the charge.\(W = qV\), where W is the work completed, q is the charge, and V is the potential difference. Potential difference, also known as voltage, is the difference in electric potential energy between two points in an electric field. It is a measure of the amount of work needed to move a unit of electric charge from one point to the other. The potential difference is measured in volts and is equal to the amount of energy per unit charge required to move the charge from one point to the other.

\(W = qV\\q = W/V\)

\(q = \frac{(4.0*10^{-4 }J)}{(380 V - 100 V)}\)

\(q = 5.26*10^{-6} C\)

Therefore, the value of the charge \(q = 5.26*10^{-6} C\)

learn more about charge Refer:brainly.com/question/30163160

#SPJ4

The acceleration is inversely related to the mass of the engine.

We have to note that we must look at the law that have been stated by Newton for the motion of an object. That law states that the relationship between the force that is acting on the object and the acceleration of the object can be given by the formula; F = ma

F = force of the object

m = mass of the object

a= acceleration of the object

It then follows that;

a = F/m

The larger the mass, the lesser the object would accelerate.

Learn more about acceleration:https://brainly.com/question/12550364

#SPJ1

Answer:

KE = 250 kg/m/s

Explanation:

use the formula: KE = 1/2 m (v^2)

KE = 1/2 (5) (10^2)

KE = (2.5) (100)

KE = 250 kg/m/s

Answer: The student changed more than one independent variable.

Explanation:

     What is the difference between dependent and independent variables?

           The independent variable is the variable you change. For example in this experiment, changing the temperature of the water.

           The dependent variable is the variable you don't change yourself, but changes based on the independent variable. In this experiment, it would be the time it takes for the sugar to dissolve.

     If we change two independent variables (in this student's experiment, the temperature and amount of water), then we cannot clearly see the answer to our question as we do not have the correct data.

     This is why you should only change one independent variable when conducting an experiment.

Read more about your question and independent variables here: https://brainly.com/question/24377791