Pls help with this question it is giving me headache

The impulsive force of the car will be 4,333. Kg.m/s.

In physics, the term "impulse" is used to characterize or measure the impact of force operating gradually to alter an object's motion. It is often stated in Newton seconds or kilograms per second and is denoted by the symbol J.

given, A car with a mass of 1200kg, went from 20 km/hr to 7 km/hr.

From the general formula of impulse:

Impulsive force j = mass( initial velocity - final velocity)

In our case,

initial velocity = 20 Km/hr

Final velocity = 7 Km/hr

mass = 1200 Kg

So,

Impulsive force = 1200( 20 - 7)

impulsive force = 15600 Kg. km/hr

Since 1 km/ hr = 5/18 m/s

impulsive force = 15600 * 5 /18 Kg.m/s

impulsive force = 4,333.33  Kg.m/s

Therefore, the impulsive force of the car will be 4,333. Kg.m/s.

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The required temperature in kelvin scale when the temperature in Fahrenheit is calculated to be 421 K.

The Fahrenheit conversion to celsius is determined through the formula is (°F  - 32)  × 5/9 = °C. Hence, we substitute 77 °F where the equivalent temperature in celsius is 25 °C. The temperature in centigrade is multiplied by 273 to get the kelvin equivalent.

The given temperature in Fahrenheit is 298 °F. It is to be converted into kelvin temperature.

So, (°F  - 32)  × 5/9 = °C

(298 - 32) × 5/9 = 147.78 × 5/9 = 147.78 °C

To convert from °C to K, we need to add 273 to celsius temperature.

147.78 °C + 273 = 421 K

Thus, the required temperature in kelvin scale is calculated to be 421 K.

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Answer: b

Explanation: no cule

The ratio of the drag force on the jet to the drag force on the prop-driven transport is approximately 3.43.

The drag force on an airplane is given by the formula,

Fd = (1/2) * rho * v^2 * A * C

where Fd is the drag force, rho is the density of air, v is the velocity of the airplane, A is the effective cross-sectional area, and C is the drag coefficient.

For the jet flying at 1000 km/h at an altitude of 10 km,

Fd_jet = (1/2) * 0.38 kg/m^3 * (1000 km/h)^2 * A * C

For the prop-driven transport flying at half the speed and altitude,

Fd_prop = (1/2) * 0.67 kg/m^3 * (500 km/h)^2 * A * C

Fd_jet/Fd_prop = [(1/2) * 0.38 kg/m^3 * (1000 km/h)^2]/[(1/2) * 0.67 kg/m^3 * (500 km/h)^2]

Simplifying this expression,

Fd_jet/Fd_prop = (0.38/0.67) * (1000/500)^2

Fd_jet/Fd_prop ≈ 3.43

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The 2 fundamental premises for the unique theory of relativity are:-

Relativity is a theory in physics that was developed by Albert Einstein in the early 20th century. It has two main components: special relativity and general relativity.

Special relativity deals with the way that time, space, and motion are related. It shows that the laws of physics are the same for all observers, regardless of their relative motion. This means that time and space are not absolute, but rather depend on the observer's point of view. It also shows that mass and energy are equivalent, and can be converted into each other.

General relativity expands on special relativity and explains how gravity works. It describes gravity as the curvature of spacetime caused by the presence of massive objects. This curvature causes objects to move in a curved path, which we observe as the force of gravity. General relativity has been confirmed through numerous experiments and observations and is an essential part of modern physics.

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Complete Question:

Each of the following lists two statements. Which two are the basic premises for the special theory of relativity?

The branch of science that studies atoms is called atomic physics.

Atomic physics is the branch of physics that studies the structure of atoms and the interactions between them. It also covers the theories and principles behind the behaviour of atomic particles, such as electrons and protons. Atomic physics has many applications in fields such as chemistry, engineering, and medicine.Atomic physics is the study of atoms, their structure, and their interactions with other particles and fields. It is a sub-discipline of physics that deals with the behavior and properties of atoms. Atomic physics is concerned with the arrangement of electrons around the nucleus, the forces that hold them together, the energy levels of the different types of atoms, and the way in which they interact with light and other particles.

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Motion study objective was to improve the efficiency and productivity of work processes by developing standardized work processes.

Frank and Lillian Gilbreth were pioneers in the field of motion study and were among the first to apply scientific principles to the study of work processes. One of the objectives of the motion study conducted by Frank and Lillian Gilbreth was to improve the efficiency and productivity of work processes.

The Gilbreths believed that by carefully analyzing work processes and identifying unnecessary motions, they could find ways to eliminate waste, reduce fatigue, and increase productivity. To achieve this objective, they used a combination of observation, time-lapse photography, and statistical analysis to identify and eliminate inefficient motions in work processes.

By breaking down work processes into their component motions and analyzing each motion, the Gilbreths were able to identify ways to reduce the time and effort required to complete a task. They also developed a system of standardized work processes that could be used to train workers and improve the consistency of work output.

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Limited liability partnerships are attractive to professions like medicine or law because they limit the amount of personal risk that one person takes.

Your choices and investments in a Limited Liability Partnership are entirely your responsibility. A third kind of corporate business form called an LLP combines the adaptability of a partnership with the limited liability of a corporation. Changes in partners won't put an end to the LLP's existence. It has the authority to enter into contracts and own property in its own right. In a general partnership, the partners are individually responsible for all debts incurred by the business, including but not limited to employee behaviour. Moreover, each owner bears unlimited personal responsibility for their deeds.

A limited liability partnership (LLPprincipal )'s advantage is that it lowers the participants' personal liability while yet allowing the partnership to continue functioning as a pass-through entity for tax purposes.

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The force constant of the spring would be 50 N/m.

A spring is a deformable object whose linear length can be changed under the presence of force. It regains its original length after the force is removed.

When a spring is stretched by the length {x} due to an acting force {F}, then the following relation holds -

F = - kx

where {k} is spring constant.

Given is that a spring is stretched by 4cm by a mass of 200 g.

We know that -

F = - kx

|F| = |- kx|

200 = 4k

k = 50 N/m

Therefore, the force constant of the spring would be 50 N/m.

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Answer:

The magnitude of the electrostatic force between the spheres is 2.25 x 10^-5 N, and its direction is towards the center of the two spheres (i.e., it is attractive).

Explanation:

To calculate the electrostatic force between two charged spheres, we need to use Coulomb's law:

F = k * (q1 * q2) / r^2

where F is the electrostatic force, k is Coulomb's constant (9 x 10^9 N m^2/C^2), q1 and q2 are the charges of the spheres, and r is the distance between their centers.

We don't have the charges of the spheres, so let's assume they have charges of q1 = 1 C and q2 = -1 C (positive and negative charges, respectively). The distance between their centers is r = 4 x 10^-1 m.

Plugging these values into Coulomb's law, we get:

F = (9 x 10^9 N m^2/C^2) * (1 C * -1 C) / (4 x 10^-1 m)^2

F = -2.25 x 10^-5 N

The negative sign indicates that the force is attractive, since the charges are of opposite signs.

Therefore, the magnitude of the electrostatic force between the spheres is 2.25 x 10^-5 N, and its direction is towards the center of the two spheres (i.e., it is attractive).

The acceleration, given that the force is 13 KN and the mass is 58 Kg is 224.14 m/s²

Force and acceleration is related according to the following equation:

Force = mass × acceleration

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

The acceleration can be obtained as illustrated below:

Force = mass × acceleration

13000 = 58 × acceleration

Divide both sides by 58

Acceleration = 13000 / 58

Acceleration = 224.14 m/s²

This, from the calculation made above, we can conclude that the acceleration is 224.14 m/s²

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The acceleration of the object is determined as 224.1 m/s².

Acceleration is the rate at which an object's velocity changes over time. It is the change in velocity divided by the time interval over which that change occurred.

The acceleration of an object can be determined by applying Newton's second law of motion as shown below;

F = ma

where;

The acceleration of the object is calculated as;

a = F / m

a = ( 13,000 N ) / ( 58 kg )

a = 224.1 m/s²

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The Kernel Stack and PCB (Process Control Block) are two crucial CPU memory management structures.

The temporary memory allotted to each process, known as the kernel stack, holds details about how the program was executed. It is used to store return addresses, local variables, and argument values.

The PCB, on the other hand, is a structure of permanent memory that houses details about the process, including its ID, the contents of its CPU registers, and its program counter.

As a process is running, the kernel stack is used to retain its state, and the PCB is used to store details about the process, such as its process ID, control registers, and program counter. When a process finishes running, the kernel stack is wiped, but the PCB stays in memory until the process is finished.

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Answer:

The first one is weight and the second one is roughness.

Explanation:

At the end of the sentence it says surfaces which one can assume texture, therefore roughness would most likely go last.

Voltage divider formula is a circuit formula used to calculate the output voltage of a circuit that is divided between two resistors. It is [tex]Vout = Vinx(R2/(R1+R2)[/tex]

A voltage divider circuit consists of two resistors in series with an input voltage applied across them, and the output voltage is taken from the point between the two resistors. The voltage divider formula:

[tex]Vout = Vin x (R2 / (R1 + R2))[/tex]

Vout: circuit's output voltage of the circuit

Vin: circuit's input voltage

R1: circuit's resistance value of first resistor

R2: circuit's resistance value of the second resistor

The voltage divider formula shows that the output voltage of the circuit is proportional to the ratio of the two resistors. If the value of R2 is increased, the output voltage will increase, and if the value of R1 is increased, the output voltage will decrease.

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Answer:

D

Explanation:

As the wavelength of a wave gets shorter, its frequency increases, while its energy increases. This relationship is described by the equation E = hf, where E is the energy, h is Planck's constant and f is the frequency of the wave.

Reflection is the process of thinking about something and analyzing it in relation to one's own experiences and perspectives.

In the context of the law of acceleration, this means considering how this law affects our everyday lives and the decisions we make.

One way that the law of acceleration relates to my life is through my use of technology. The law of acceleration states that an object's acceleration is directly proportional to the net force acting on it and inversely proportional to its mass.

This means that as technology becomes more advanced and lighter in weight, it also becomes faster and more efficient. This directly affects my daily life, as I rely on technology for communication, entertainment, and work.

Another way that the law of acceleration relates to my life is through my experiences with transportation. Whether I am driving a car, riding a bike, or taking public transit, the law of acceleration is at play. Understanding how acceleration works allows me to make informed decisions about how to safely and efficiently get from one place to another.

Overall, the law of acceleration is a fundamental principle that affects many aspects of our daily lives. By reflecting on how it relates to my own life, I can better understand the world around me and make more informed decisions.

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The energy required to begin nuclear fusion in a protostar comes from  C. the gravitational potential energy of the protostar.

Atomic nuclei join together to form a heavier nucleus during nuclear fusion, which releases a significant quantity of energy. A reaction known as nuclear fusion occurs when two or more atomic nuclei fuse to create new atomic and subatomic particles. Energy is released or absorbed depending on how much mass there is between the reactants and products.

Natural nuclear fusion occurs in stars, such as the Sun, when hydrogen nuclei combine to generate helium and release energy that powers the Sun's light and heats the Earth. Although fusion has also been utilized to create nuclear weapons, work is still being done to harness fusion energy for the production of electricity.

Therefore, option C is c orrect.

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The conversion of 99.4 °F(Fahrenheit) is equivalent to 37.44 °C.

A temperature unit developed from the SI (International System of Units) is Celsius (symbol: °C).

Prior to the adoption of the metric system, Fahrenheit (symbol: °F) was a commonly used measurement of temperature.

To convert Fahrenheit (°F) to Celsius (°C) we have to first subtract 32 from Fahrenheit and then multiply it by .5556 or 5/9.

We have to convert 64 degrees Fahrenheit (°F) to Celsius (°C),

We can use the following formula:

°C = (°F - 32) x 5/9

As per the given information,

°F = 99.4

By placing the value 99.4 for °F, we get:

°C = (99.4 - 32) x 5/9

°C = 37.44 (rounded to two decimal places)

Therefore, 99.4 °F is equivalent to 37.44 °C.

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Answer:Acceleration

Explanation: The change in the speed or direction of an object is called Acceleration, Objects that are changing their speed or their direction are said to be accelerating.

Answer:

acceleration :)

Explanation:

any change

Mars Pathfinder science discoveries comprise rounded pebbles and cobbles at the landing site, and other compliances indicated conglomerates that formed in running water during a warmer past in which liquid water was regular.

Ares Vallis is a gigantic valley that seems to have been deteriorated by ancient flows of water. Ares Vallis associates the mountainous Margaritifer Terra with the Chryse Planitia delta. The Valley departs through the ancient Xanthe Terra highlands. Ares Vallis was the chosen site for the 1996 Mars Pathfinder mission. Both the Pathfinder lander and rover have stereo imaging approaches. The rover also holds up an alpha proton x-ray spectrometer to investigate the composition of rocks.

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Tetrachloromethane is the name given to the CCl4 chemical.

Structure of carbon tetrachloride chemically. The liquid CCl4 is transparent, nonflammable, and heavy. It evaporates quickly and has a distinctive sweet smell that is similar to that of chloroform. The term "volatile organic compound" refers to CCl4 (VOC).

The secondary prefix for four carbon atoms is tetra. The first prefix for chlorine is chloro. Meth represents the word's root, which is carbon. Tetrachloromethane, which may also be written as 1,1,1,1, is the name of the substance. a week ago With the chemical formula CCl4, carbon tetrachloride is an organochlorine chemical compound that goes by several different names.

covalent substance Since it has four non-polar covalent connections between carbon and chlorine, carbon tetrachloride (CCl4) is classified as a covalent molecule.

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Answer:

The speed of the crate when it reaches the bottom can be calculated using the equation:

v = √(2gh)

Where v is the speed, g is the acceleration due to gravity (9.8 m/s2), h is the height of the ramp (3.20 m).

Therefore, the speed of the crate is:

v = √(2 * 9.8 * 3.20) = 7.7 m/s

Magnetism is an intangible force that is produced when electrons spin  unison. The field is also larger the stronger the magnet.

As magnets attract or repel one another, they exert a force known as magnetism. The movement of electric charges is what generates magnetism. Atoms are little building blocks that make up all substances. Each atom contains electrons, which are little particles with electric charges.

Poles of magnetism are always found in pairs. Iron, nickel, chrome, stainless steel, and several rare earth metals are a few examples of magnetic materials. Copper and gold are diamagnetic materials that are only faintly attracted to magnetic fields. Aluminum and calcium, which are both magnetic elements, are only faintly drawn to a

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Temperature is a continuous variable, meaning that it can take on a wide range of values, including fractional values.

Temperature is a continuous quantitative variable that can be either an independent or dependent variable depending on the context.

Temperature is a physical quantity that describes the degree of hotness or coldness of an object or environment. It is a continuous variable, meaning that it can take on a wide range of values, including fractional values. As such, temperature is considered a quantitative variable, as it can be measured and expressed numerically.

Furthermore, temperature can be either an independent variable or a dependent variable, depending on the context in which it is being used. For example, in a scientific experiment investigating the effects of temperature on a chemical reaction, temperature would be an independent variable, as it is being deliberately manipulated by the researcher. On the other hand, in a study investigating the relationship between temperature and the rate of plant growth, temperature would be a dependent variable, as it is being measured and observed based on the conditions of the experiment.

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The energy that propels a bicycle forward ultimately comes from the rider, who supplies the power to pedal the bicycle.

When the rider pedals, they convert chemical energy from their body into mechanical energy, which is transmitted through the pedals to the chain and then to the wheels.

The mechanical energy from the wheels propels the bicycle forward by overcoming the resistance to motion provided by various forces such as friction, air resistance, and gravity. The energy is transferred from the wheels to the ground, and the ground pushes back with an equal and opposite force, propelling the bicycle forward.

In a sense, the energy that propels a bicycle forward comes from the food that the rider eats, which provides the chemical energy that is converted into mechanical energy through the process of metabolism. So, the rider's body acts as the power source for the bicycle, and the energy is transferred through the mechanical components of the bicycle to propel it forward.

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Moreover, the maximum frequency kinetic energy doubles. And in accordance with the query, the body doubles while moving at a steady speed. the motional energy.

A blackbody never approaches zero, hence the wavelength of the highest intensity that a heavenly object may produce is infinite. As a celestial object's temperature rises, its overall energy output increases quickly.

E=T4 denotes the total energy emitted by either an unit volume of a black body each second. E=T4where is the body's emissivity if the entity isn't a perfect black body.

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The dynamic (absolute) viscosity of the oil is 0.1 kg/m.s.

To find the dynamic viscosity (in kg/m.s), we can use the relationship between kinematic viscosity and dynamic viscosity, which is:

dynamic viscosity = kinematic viscosity x density

where density is given by the specific gravity multiplied by the density of water at 4°C, which is 1000 kg/m^3.

Substituting the given values,

density = specific gravity x density of water = 0.8 x 1000 kg/m^3 = 800 kg/m^3

dynamic viscosity = kinematic viscosity x density = 1.25e-4 m^2/s x 800 kg/m^3 = 0.1 kg/m.s

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The extensions of the middle and lower springs are 0.3209 m and 0.1988 m, respectively, from their unstretched lengths.

We can solve this problem using the concept of equilibrium and the equations of motion. In equilibrium, the weight of each mass is balanced by the force exerted by the spring, so we have:

m₁g = kx₁

m₂g = kx₂

m₃g = kx₃

where g is the acceleration due to gravity, k is the spring constant, and x₁, x₂, and x₃ are the extensions of the three springs from their unstretched lengths.

When the elevator is moving with constant velocity, the forces on the masses are still balanced, so the extensions of the springs are unchanged. However, when the elevator is accelerating, the forces on the masses are no longer balanced, and the extensions of the springs will change. We need to take into account the pseudo-force experienced by the masses due to the acceleration of the elevator.

The pseudo-force on each mass is given by:

F' = m × a

where m is the mass of the object and a is the acceleration of the elevator. For m₁, m₂, and m₃, the pseudo-forces are:

F₁' = m₁a = 3.3 kg × 4.8 m/s² = 15.84 N

F₂' = m₂a = 9.9 kg × 4.8 m/s² = 47.52 N

F₃' = m₃a = 6.6 kg × 4.8 m/s² = 31.68 N

To calculate the new extensions of the springs, we need to add the pseudo-forces to the weights of the masses and then divide by the spring constant. For the upper spring, which is attached to m₁, we have:

kx₁ = m₁g + F₁'

x₁ = (m₁g + F₁')/k

Substituting the values, we get:

x₁ = (3.3 kg × 9.81 m/s² + 15.84 N)/(229.57 N/m) = 0.1003 m

So the upper spring is extended by 0.1003 m from its unstretched length.

For the other two springs, we have:

x₂ = (m₂g + F₂')/k = (9.9 kg × 9.81 m/s² + 47.52 N)/(229.57 N/m) = 0.3209 m

x₃ = (m₃g + F₃')/k = (6.6 kg × 9.81 m/s² + 31.68 N)/(229.57 N/m) = 0.1988 m

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Answer:

Combining glass, a filament, and metal base to form the light bulb is an example of innovation. Innovation is the process of combining existing elements in new and novel ways to create something original.

The block slides 2.30 meters before coming to rest.

Force generated by two surfaces that contact and slide against each other is called frictional force.

As we know, W = F d

W is the work done, F is force of friction, and d is distance over which the force acts.

v² = u² + 2as

v is final velocity (zero in this case), u is initial velocity (10 m/s), a is acceleration (which we can find using Newton's second law), and s is distance traveled.

s = (v² - u²) / 2a

Given, u = 10 m/s; v = 0 m/s

As a = F / m = 87 N / 4 kg = 21.75 m/s^2

s = (0 - 10²) / (2 x 21.75) = -100 / 43.5 = -2.30 m

|s| = 2.30 m

Therefore, the block slides 2.30 meters before coming to rest.

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