a 2500 kg car accelerates from rest to a velocity of 10 m/s in 5.0 seconds. the average power of the engine during this acceleration is

Answer:

2.93 mm

Explanation:

If you stack 3 nickels on a table, e the table is their center of gravity 2.93 mm

The Centre of gravity is a theoretical term, where the body’s total weight is thought to be concentrated and it predicts the behavior of a moving body when acted on by gravity.

It is also useful in designing static structures like buildings and bridges, the center of gravity is identical to the centre of mass.

For the Moon, the centre of mass is very close to its geometric centre and its centre of gravity is slightly towards the Earth due to the stronger gravitational force on the Moon’s near side.

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Answer:

10 average speed seconds

a) Tina drives approximately 69.93 meters before passing David.

b) Her speed as she passes him is approximately 34.77 m/s.

To find the distance Tina drives before passing David, we can use the equation:

\(\[d = ut + \frac{1}{2}at^2\]\)

where:

d is the distance traveled,

u is the initial velocity (0 m/s for Tina),

a is the acceleration (2.90 m/s² for Tina), and

t is the time.

First, we need to determine the time it takes for Tina to catch up with David. Since David is driving at a constant speed of 31.0 m/s, the time Tina needs to catch up can be found using the equation:

\(\[t = \frac{d}{v}\]\)

where:

\(\(t\)\)  is the time,

\(\(d\) \\\) is the initial distance between Tina and David (0 m), and

v  is the relative velocity of Tina with respect to David (31.0 m/s).

Substituting the values, we find:

\(\[t = \frac{0\,m}{31.0\,m/s} = 0\,s\]\)

Since Tina begins to accelerate at the instant when David passes, she starts from rest and requires no time to catch up.

a) Using the equation for distance, we find:

\(\[d = ut + \frac{1}{2}at^2 = 0 + \frac{1}{2}(2.90\,m/s²)(0\,s)^2 = 0\,m\]\)

Therefore, Tina does not drive any distance before passing David.

b) Since Tina catches up with David at the same instant he passes, her speed is equal to his speed. Thus, her speed as she passes him is approximately 31.0 m/s.

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Tina drives approximately 158.2 meters before passing David. Tina's speed as she passes David is 31.0 m/s.

To find the distance Tina drives before passing David, we need to determine the time it takes for Tina to catch up with David first. We can use the equation:

d = v0t + 0.5at2

Where d is the distance, v0 is the initial velocity, a is the acceleration, and t is the time. Rearranging the equation to solve for t:

t = (v - v0) / a

Substituting the given values:

t = (0 - 31.0 m/s) / (-2.90 m/s²)

t ≈ 10.69 seconds

To find the distance:

d = v0t + 0.5at2

d = 0 + 0.5(-2.90 m/s²)(10.69 s)2

d ≈ 158.2 meters

Therefore, Tina drives approximately 158.2 meters before passing David.

To find Tina's speed as she passes David, we can use the equation:

v = v0 + at

Substituting the given values:

v = 0 m/s + (2.90 m/s²)(10.69 s)

v ≈ 31.0 m/s

Therefore, Tina's speed as she passes David is 31.0 m/s.

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Answer:

a)

Weight in Air = 0.3N

Weight in Water = 0.25N

Weight in Liquid = 0.24N.

Upthrust /Buoyant Force = Weight in Air – Weight in Fluid(Water in this case)

= 0.3 – 0.25

= 0.5N.

b) R.D of Body = Density of Body/Density of Standard Fluid(Water).

There's a Derived Formula for RD.

I'm gonna Apply it here.

Ask me for the derivation in the Comment section if you need it.

RD = α/ρ = (Weight in Air) / (Upthrust Force)

Where

α = density of the Body(or reference substance)

ρ = density of standard fluid (water)

= 0.3/0.05 = 6.

c) RD of Liquid = (Density of Liquid) /(Density of standard Fluid(water)

Or we just go by that formula

RD of Liquid = Weight in Air/Upthrust(In Liquid)

We'll be using the Upthrust in that Liquid now.

= 0.3 – 0.24 = 0.06

RD = 0.3/0.06 = 5.

The levels of body organization, from cells to tissues, organs, organ systems, and the whole organism, work collaboratively to support bodily functions, allowing the body to carry out essential processes such as metabolism, movement, and communication.

The human body is organized into different levels, each contributing to the overall function and maintenance of the body. These levels of organization work together in a coordinated manner to ensure the proper functioning of the body. At the cellular level, cells are the basic structural and functional units of the body. Different types of cells perform specific functions and work together within tissues. Tissues, such as muscle, nerve, or connective tissue, are formed by groups of specialized cells that collaborate to carry out specific functions. Tissues combine to form organs, which are distinct structures with specific functions. Organs, such as the heart, lungs, and liver, are made up of different tissues working together to perform complex tasks. Organs further integrate to form organ systems. For instance, the circulatory system comprises the heart, blood vessels, and blood, working together to transport nutrients and oxygen throughout the body. Organ systems, like the respiratory, digestive, and nervous systems, coordinate their activities to maintain homeostasis and ensure the body's overall function. Lastly, all the organ systems collectively form the organism, the complete individual capable of carrying out various activities, responding to stimuli, and maintaining internal balance.

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Answer:

To calculate the pressure exerted by water at the bottom of the tank, we need to use the formula:

Pressure = Density x Gravity x Height

where:

Density = 1000 kg/m³ (density of water)

Gravity = 9.81 m/s² (acceleration due to gravity)

Height = 12 m (height of the tank)

Substituting the values in the formula, we get:

Pressure = 1000 kg/m³ x 9.81 m/s² x 12 m

Pressure = 117,720 Pa (Pascals)

A single electron has a charge of 2.8×10−15 z . using zeets and a fictitious unit of mass called the wiggle, w , the charge-to-mass ratio of an electron is 9.7×106 z/w .The mass of an electron in wiggles is approximately 2.88×10^(-22) w.

To find the mass of an electron in wiggles, we can use the charge-to-mass ratio given in zeets and wiggles.

The charge-to-mass ratio of an electron is given as 9.7×10^6 z/w. We know that the charge of an electron is 2.8×10^(-15) z.

Let's assume the mass of an electron in wiggles is represented as m_w. We can set up the following equation:

(2.8×10^(-15) z) / m_w = 9.7×10^6 z/w

To solve for m_w, we can rearrange the equation:

m_w = (2.8×10^(-15) z) / (9.7×10^6 z/w)

Simplifying the expression:

m_w ≈ 2.88×10^(-22) w

Therefore, the mass of an electron in wiggles is approximately 2.88×10^(-22) w.

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GREETINGS!

lightening usually strikes the metal pole and cables above the building because they provide a safe low resistance pathway to the lightening to move from building from the concrete steel to the ground below, thats how building doesnt get any damage and high electric charge passes through it

HOPE IT HELPS YOU!

The time of flight is 0.4 sec, The range is 1.6 m and maximum height is 3.2 meter.

Calculation:-

The initial vertical speed is u = 5m/s×sin53° = 4m/s

Time of flight = u/g

= 4/10

= 0.4 second

so if the final vertical velocity is v at a height h then v² = u² −2gh will give us v = \(\sqrt{16-20*0.45} = \sqrt{7} m/s\)

The horizontal velocity remains constant and is given as Vx = 5m/s Cos53° = 3m/s

so the speed at the said instant will be V = \(\sqrt{v_{x} ^{2} +v^{2} } = \sqrt{9+7} = 4m/s\)

Range = horizontal velocity× 0.4 second

= 4 × 0.4

= 1.6 m

Height = UT- 1/2at²

= 1.6 - 0.4 × 10 × 0.16

= 3.2 m

The horizontal velocity of the projectile is constant. There is the vertical acceleration due to gravity. Its value is 9.8 m/s/s, and the projectile's vertical velocity changes at 9.8 m/s per second. The horizontal movement of the projectile is independent of vertical movement. Horizontal acceleration is always zero because nothing accelerates the projectile horizontally.

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The wavelength of light will the first-order dark fringe is 1.205 μm.

Calculation:-

We know that, for the 1st order dark fringe, we have

y(dark,0 )= ( 0 + 1/2)*λ*L/d

0.00484 m =( 0.5*λ*3 ) /0.00037376

= λ =( 0.00484*0.00037376)/(0.5*3)

= λ = 1205*10^-9 m

= 1.205 μm

The wavelength of light determines its color and the wavelength of sound determines its pitch. Wavelength is the gap among two wave crests and the equal for wave troughs. Frequency is the variety of oscillations that bypass through a specific point in a single 2d, measured in cycles according to 2nd. the distance among peaks is called the wavelength.

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The escheat doctrine is an involuntary alienation common law doctrine which transfers the property of a person who dies without heirs to the state.

Escheat is a legal principle that applies when a person dies without leaving a will or any known heirs. In such cases, the property of the deceased person is transferred to the state or government as the rightful owner. The rationale behind escheat is to prevent property from being left in a state of limbo and ensure that it is put to productive use for the benefit of society.

The specific rules and procedures regarding escheat vary by jurisdiction, as it is governed by state laws. In some cases, the state may attempt to locate any potential heirs or beneficiaries before claiming the property. However, if no rightful heirs are found within a specified period, the property reverts to the state through the process of escheat.

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The phrase "parallel adaptive fluid–structure interaction simulation of explosions impacting on building structures" refers to a computational method used to study the effects of explosions on buildings. Let's break it down step by step:

"Parallel adaptive": This refers to the use of parallel computing techniques, where multiple processors or cores work together to solve the simulation problem faster. It allows for efficient computation of complex simulations by dividing the workload.

"Fluid–structure interaction": This term describes the interaction between a fluid (such as air or water) and a solid structure (such as a building) in a simulation. It considers how the fluid affects the structure and vice versa. In this case, it refers to how the explosion impacts the building and how the building responds to the explosion.

"Simulation of explosions impacting on building structures": This means that the simulation aims to model the effects of explosions on buildings. It can help researchers and engineers understand how buildings behave under explosive forces, and can be used to design safer structures or develop strategies to mitigate the damage caused by explosions.

The phrase refers to a computational method that uses parallel computing techniques to simulate the interaction between fluids and structures, specifically focusing on explosions impacting building structures. This simulation can provide valuable insights into the behavior of buildings under explosive forces.

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Answer:

A free falling object is an object that is falling under the sole influence of gravity. Any object that is being acted upon only by the force of gravity is said to be in a state of free fall. ... Free-falling objects do not encounter air resistance.

Explanation:

The net vertical force on the trailer is 0, while the net horizontal force on the trailer is 20,000 N to the right.

The net vertical force on the truck is 0, while the net horizontal force on the truck is 6,400 N to the right.

The given parameters;

the trailer:

the truck:

The net force on each vehicle is calculated as follows;

for the trailer:

Net vertical force is calculated as;

\(\Sigma F_y = 250, 000 \ N - 250,000 \ N = 0\)

Net horizontal force is calculated as;

\(\Sigma F_x = 20,000 \ N\)

for the truck;

Net vertical force is calculated as;

\(\Sigma F_y =80,000 \ N - \ 80,000 \ N = 0\)

Net horizontal force is calculated as;

\(\Sigma F_x = 26,400 \ N - \ 20,000 \ N = 6,400 \ N \ to \ the \ right\)

"Your question is not complete, it seems to be missing the following information;"

find the net force on each vehicle.

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Answer:

3V

Explanation:

From the question given above, we can see clearly that the resistors are arranged in parallel connection. Hence, the same voltage will pass through the resistors i.e

Total voltage = voltage of 3 Ω = voltage of 6 Ω

From the question given above,

The total voltage = 3 V

Therefore,

Voltage of 3 Ω = total voltage

Voltage of 3 Ω = 3V

Thus, option 3 gives the correct answer to the question.

Answer:

Explanation:

always accerelation it measures in m/second sguared.

Answer:

HOPEFULLY i am correct but i say its D. Hopefully I helped!✨

Answer: It can be A or B

Explanation: In physics, motion is the phenomenon in which an object changes its position over time. Motion is mathematically described in terms of displacement, distance, velocity, acceleration, speed, and time.

2mv is the magnitude of the impulse delivered by the wall to the ball.

What is Velocity ?

Velocity is a vector quantity that describes the rate of change of an object's position. It is equal to the displacement of an object divided by the time interval over which the displacement occurred. Velocity has both magnitude and direction, and its units are typically meters per second (m/s). The velocity of an object can change over time due to acceleration, and if an object is moving in a circular path, it also has a component of velocity perpendicular to its direction of motion, known as centripetal velocity.

Impulse = change in momentum

J = m(v - u)

  = m(v-(-v))

J = 2mv

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Answer:

43.58kg

Explanation:

The equation F=ma will help here.

F=ma

523N=m(12m/s^2)

43.58kg=m

Answer:

Assume that the tractor and the car are moving in the same direction. If the tractor keeps moving at the same speed, the car need to decelerate at a minimum rate of approximately \(2.8\; {\rm m\cdot s^{-2}}\) (\((25 / 9)\; {\rm m\cdot s^{-2}}\)) to avoid collision.

Explanation:

Relative to the tractor, the car was initially moving at \(80\; {\rm km \cdot h^{-1}} - 20\; {\rm km \cdot h^{-1}} = 60\; {\rm km \cdot h^{-1}}\).

Apply unit conversion; ensure that the unit of velocity is \({\rm m\cdot s^{-1}}\):

\(\begin{aligned} 60\; {\rm km \cdot h^{-1}} &= 60\; {\rm km \cdot h^{-1}} \times \frac{1\; {\rm m\cdot s^{-1}}}{3.6\; {\rm km \cdot h^{-1}}} \\ &\approx \; 16.7\; {\rm m\cdot s^{-1} \end{aligned}\).

In other words, the initial velocity of the car was \(u \approx 16.7\; {\rm m\cdot s^{-1}}\) relative to the tractor.

Since the tractor is moving at constant velocity, the acceleration \(a\) of the car relative to the tractor is the same as the acceleration of the car relative to the ground.

It is given that the initial distance between the tractor and the car was \(50\; {\rm m}\). The final velocity \(v\) of the car should be no more than \(0\; {\rm m\cdot s^{-1}}\). Otherwise, the car would keep moving toward the tractor until the two vehicles collide.

Relative to the tractor, if the deceleration of the car was at the minimum safe value:

Apply the SUVAT equation \(a = (v^{2} - u^{2}) / (2\, x)\) to find the acceleration of the car:

\(\begin{aligned}a &= \frac{v^{2} - u^{2}}{2\, x} \\ &\approx \frac{(0\; {\rm m\cdot s^{-1}})^{2} - (16.7\; {\rm m\cdot s^{-2}})^{2}}{2 \times 50\; {\rm m}} \\ &\approx (-2.8)\; {\rm m\cdot s^{-2} \end{aligned}\).

In other words, the deceleration of the car should be at least \(2.8\; {\rm m\cdot s^{-2}}\) relative to the tractor and to the ground.

The acceleration is of mother before child reaches half a revolution is,
a) 0.42 radians per second squared b) 0.42 radians per second squared

If both are moving in the same direction, the relative velocity of the child with respect to the mother is the angular velocity of the carousel, which is 2π radians per minute. The mother needs to cover the same distance as the child in half the time, so her relative velocity with respect to the child must be twice the angular velocity of the carousel, which is 4π radians per minute.

To calculate the required acceleration, we can use the formula: acceleration = (final velocity - initial velocity) / time. Since the mother starts from rest and reaches a velocity of 4π radians per minute, the final velocity is 4π radians per minute. The time to cover half a revolution is 30 seconds. Therefore, the acceleration required for the mother to catch up with the child is,

acceleration = (4π - 0) / 30 = 4π/30 ≈ 0.42 radians per second squared

If both are moving in opposite directions, the relative velocity of the child with respect to the mother is the sum of their individual angular velocities. Since the mother is moving in the opposite direction to the carousel, her angular velocity is -2π radians per minute. Therefore, the relative velocity is (2π - (-2π)) = 4π radians per minute.

Using the same formula as before, the acceleration required for the mother to catch up with the child is,

acceleration = (4π - 0) / 30 = 4π/30 ≈ 0.42 radians per second squared

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--The complete question is, A carousel completes 1 revolution every minute. A mother realizes that her child is about to fall and starts moving to protect him when the child already has a 90-degree lead. What acceleration must she reach to catch up with him before the child completes half a revolution? a) If both are moving in the same direction? b) If both are moving in opposite directions?--

The wavelength of radio waves broadcast by a radio station with a frequency of 1300khz would be 230.76 m

It can be understood in terms of the distance between any two similar successive points across any wave for example wavelength can be calculated by measuring the distance between any two successive crests.

The wavelength is inversely proportional to the frequency of the wave as from the following relation.

C = νλ

As given in the question  the wavelength of radio waves broadcast by a radio station with a frequency of 1300khz,

By using the formula

C = νλ

3×10⁸ = 1300 ×10³×λ

λ = 3×10⁸/ 1300 ×10³

  = 230.76 m

Thus,the wavelength of the radio waves comes out to be 230.76 m.

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Answer:

a. Walking burns up more energy.

b. 1740 kJ

c. This is because more intense exercise releases a lot of energy in a short period of time, whereas, less intense energy releases it energy gradually over a long period of time.

Explanation:

a. We know energy W = Pt where P = power and t = time.

Now for walking, t = d/v where d = distance = 5.00 km and v = speed = 3.00 km/hr and P = 290 W

So, t = d/v = 5.00 km/3.00 km/hr = 5/3 hr = 5/3 × 3600 s = 6000 s

W = Pt = 290 W × 6000 s = 1740000 = 1740 kJ

Now for running, t = d/v where d = distance = 5.00 km and v = speed = 10.00 km/hr

So, t = d/v = 5.00 km/10.00 km/hr = 0.5 hr = 0.5 × 3600 s = 1800 s and P = 700 W

W = Pt = 700 W × 1800 s = 1260000 = 1260 kJ

Since walking burns up 1740 kJ and running burns up 1260 kJ, walking burns up more energy.

b. It burns up 1740 kJ

c. This is because more intense exercise releases a lot of energy in a short period of time, whereas, less intense energy releases it energy gradually over a long period of time.

The statement that best reflects the views of a protester in the Pullman Strike cannot be determined without specific information or statements from protesters.

The Pullman Strike, which took place in 1894, involved a widespread labor protest by railroad workers against the Pullman Company. The views of protesters during the strike varied, and it is necessary to consider individual perspectives or specific statements to accurately reflect their views. Different protesters may have emphasized different grievances, such as low wages, poor working conditions, or the company's refusal to negotiate. Some may have focused on workers' rights and the need for collective bargaining, while others may have emphasized broader social and economic inequalities. Without specific information about the views expressed by the protesters, it is challenging to determine a statement that best reflects their collective perspective.

Due to the diversity of views among protesters during the Pullman Strike, it is not possible to determine a single statement that universally represents their perspectives.

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Answer:

procrastinating

Explanation:

procrastinating is when someone dose not want to do work

Explanation:

if force is applied but object do not move then

it is situation for no work done

Answer: some may argue that while teacher’s only provide service to a single classroom, superstar athletes are entertaining fans all around the world, enticing people with a feeling of relaxation and excitement. Obviously, what these individuals must not be aware of is the most important man in our nation, the president, who makes critical decisions that affect the entire world every day, only makes $400,000 a year. While President Obama is hard at work reviving the economy, the unproven rookie in the MLB is earning way over that figure. Furthermore, police officers, firefighters, and doctors save lives while risking their own for a fraction of what sports stars make. People in the military leave their families at home to defend and protect the country knowing they may never return. It's truly a pity that none of these true heroes are given the same recognition by society as athletes such as Brett Favre or Michael Jordan are given. While I do understand that making it into the pros is not an easy thing to do, and that it takes a tremendous number of hours of hard work and dedication every day to earn a job in professional sports, these people do nothing more than entertain the general public.

Explanation:

Answer:

Wouldn't it be great to make nearly $111 million a year simply to play a game? Tiger Woods, along with many other professional athletes, certainly think so. But do these athletes really deserve all that money?

In my mind, absolutely not. Professional athletes are making too much money in a society where salaries and wages are traditionally based on the value of one's work. In today's society, one should be paid according to the job’s economic importance and their value to society.

Teaching is one of the most economically important occupations because our future economy relies on the education of its youth, yet teachers are paid astronomically less than the average professional athlete is. In fact, each basket Kobe Bryant scores earns him equivalent to the average classroom teacher’s yearly salary.

However, some may argue that while teacher’s only provide service to a single classroom, superstar athletes are entertaining fans all around the world, enticing people with a feeling of relaxation and excitement.

Obviously, what these individuals must not be aware of is the most important man in our nation, the president, who makes critical decisions that affect the entire world every day, only makes $400,000 a year. While President Obama is hard at work reviving the economy, the unproven rookie in the MLB is earning way over that figure.

Furthermore, police officers, firefighters, and doctors save lives while risking their own for a fraction of what sports stars make. People in the military leave their families at home to defend and protect the country knowing they may never return. It's truly a pity that none of these true heroes are given the same recognition by society as athletes such as Brett Favre or Michael Jordan are given.

While I do understand that making it into the pros is not an easy thing to do, and that it takes a tremendous number of hours of hard work and dedication every day to earn a job in professional sports, these people do nothing more than entertain the general public.

Moreover, in my mind, if these athletes want to continue to be rewarded with the fame and fortune that is unfairly bestowed upon them, they must prove to the world that they are going to be positive role models for future athletes, and those who admire them.

Explanation:

found if off some website lol hope it helps! <3

Mars is believed to have significantly less metal in its core than Earth due to its smaller size and differences in planetary formation processes.

Mars and Earth formed around the same time, approximately 4.6 billion years ago, through the process of accretion. However, their formation processes differed in some aspects, resulting in variations in their compositions. Mars is smaller than Earth, with a diameter of about 6,779 kilometers, compared to Earth's 12,742 kilometers. Due to its smaller size, Mars has a lower mass and gravity, which could have led to a lower concentration of heavy metals sinking into its core during formation.

Additionally, the abundance of metal-rich meteorites and other materials available during the formation of the two planets may have been different. Earth may have received more metal-rich materials due to its larger size and stronger gravitational pull, whereas Mars, being farther from the Sun, may have had less access to these building blocks.

Another factor is the differentiation process that both planets underwent. Earth's core is believed to have separated more efficiently from its mantle, leading to a higher concentration of heavy metals in its core. Mars, on the other hand, may have experienced a less efficient differentiation process, resulting in a less metal-rich core.

In summary, Mars's smaller size, differences in planetary formation, and less efficient differentiation process contribute to its core containing significantly less metal than Earth's core.

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