You have a bowling ball with a mass of 4kg. You throw it with an acceleration of 10 m/s/s. With how much force will it hit the pins?

Answer:

Stretch is 0.816 m

Explanation:

Data :

  Force  = F = 10 N

 Spring constant = k = 15 N/m

By using formula

      F =  - kx²

Where is displacement or stretch

    x² = F/-k  = 10/15 = 0.667

   x ² = 0.667   ⇒ x=√o.667

         x = 0.816 m

Answer:

The answer is 0 J

Explanation:

Mass=3

Acceleration= 9.8

Height=0

The eqation is \(3(9.8)(0)\) or \(3*9.8*0\)

and if you do the math it adds up to 0 J

The potential energy of your 3 kg puppy that is sitting in the grass in your backyard would be 0 Joules .

Mechanical energy is the combination of all the energy in motion represented by total kinetic energy and the total stored energy in the system which is represented by total potential energy .

ME = PE + KE

As for the given problem, we have to find out what the potential energy of your 3 kg puppy that is sitting in the grass in your backyard,

The potential energy of the puppy = m × g × h

                                                  = 3 × 9.8 × 0

                                                  = 0

Thus , the potential energy of your 3 kg puppy that is sitting in the grass in your backyard would be 0 Joules .

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Answer:

The conservation of energy is a principle where according to which the energy of interacting bodies or particles in a closed system remains constant.

Explanation:

Answer:

a principle stating that energy cannot be created or destroyed, but can be altered from one form to another.

A web designer is one who thinks about the best way to display information on the site.

The role of Web designers is to plan, create and code internet sites and web pages, many of which combine text with sounds, pictures, graphics, and video clips. A web designer is responsible for creating the design and layout of a website or web pages.

Web designers generally establish design guidelines, standards, and best practices. They also maintain the appearance of websites by enforcing content standards. Designing visual imagery for websites and ensuring that they are in line with branding for clients.

Therefore, a web designer is one who thinks about the best way to display information on the site.

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The correct answer to the given question is -6.944 * 10^-28 Joules

a. To find the electron's initial speed, we can use the conservation of energy. The initial kinetic energy of the electron must equal the final potential energy of the electron at its closest approach to the sphere.

Ki = 1/2 * me * v^2

v = sqrt(2Ki/me)

Ki = qe * V = (1.6 x 10^-19 C) * (-4.4 x 10^-9 C) = -6.944 x 10^-28 J

b. At the point where the speed of the electron is half of its initial value, the kinetic energy of the electron is half of its initial value. Therefore,

Ki/2 = 1/2 * me * (v/2)^2

we can solve for the distance from the surface of the sphere using the same equation as in part a, and substituting Ki/2 and v/2 for Ki and v respectively

c. The acceleration of the electron at its turning point can be found using the equation for centripetal acceleration:

a = v^2/r

where a is the acceleration, v is the speed of the electron, and r is the distance of the electron from the center of the sphere at its closest approach. We can use the value of v from part a and the distance from part b to find the acceleration.

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Answer:

225 N to the right

Explanation:

got it wrong on the quiz and revealed the correct answer

Answer: about 300 million years ago

Explanation: process

B. wind erosion is the correct answer.

Hope this helps~

A steel cable is moving an elevator up an elevator shaft at a consistent speed. The consequences of friction are all insignificant. In this case, the forces acting on the elevator are such that the cable's upward force is equal to the force of gravity pulling downward.

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The thermal energy lost per hour is 1.8288 x 10⁸ J and the engine absorbs 478,080 kJ (4.78 x 10⁸ J) of thermal energy every hour.

Use the Carnot efficiency formula to calculate the thermal energy absorbed by the engine per hour:

Efficiency = 1 - (T_cold / T_hot)

where T_cold and T_hot = temperatures of the cold and hot reservoirs in Kelvin.

Calculate the thermal energy absorbed per hour by the engine using the formula:

Thermal energy absorbed per hour = Power output / Efficiency

Convert the temperatures to Kelvin:

T_cold = 30°C + 273.15 = 303.15 K

T_hot = 524°C + 273.15 = 797.15 K

Calculate the efficiency:

Efficiency = 1 - (T_cold / T_hot)

Efficiency = 1 - (303.15 / 797.15)

Efficiency = 0.618

Calculate the thermal energy absorbed per hour:

Thermal energy absorbed per hour = Power output / Efficiency

Thermal energy absorbed per hour = 82 kW / 0.618

Thermal energy absorbed per hour = 132.8 kW

Finally, convert the result to joules:

Thermal energy absorbed per hour = 132.8 kW x 3600 s

Thermal energy absorbed per hour = 478,080 kJ

Therefore, the thermal energy absorbed by the engine per hour is 478,080 kJ or 4.78 x 10⁸ J.

The thermal energy lost per hour by the engine is equal to the thermal energy absorbed per hour minus the power output:

Thermal energy lost per hour = Thermal energy absorbed per hour - Power output

Thermal energy lost per hour = 478,080 kJ - 82 kW x 3600 s

Thermal energy lost per hour = 478,080 kJ - 295,200 kJ

Thermal energy lost per hour = 182,880 kJ

Finally, convert the result to joules:

Thermal energy lost per hour = 182,880 kJ = 1.8288 x 10⁸ J

Therefore, the thermal energy lost by the engine per hour is 1.8288 x 10⁸ J.

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So there are two types of friction one is kinetic friction which acts when car skid on icy pavement and other is rolling friction which acts which helps tire to roll along the surface now as we know that coefficient of rolling friction μr is greater than coefficient of kinetic friction μk  .

So due to which friction force will be more effective when tire rolls along the surface not skid so in order to stop car in minimum distance possible on icy pavement should apply brakes more gently.

Kinetic friction is defined as a force that acts between shifting surfaces. A body moving at the floor reviews a force in the opposite direction of its motion. The importance of the force will rely on the coefficient of kinetic friction among the two materials.

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Well !!! This question seems very interesting

Whenever we discussed about important topics in physics we generally referred galelio galilei, Issac newton and Albert Einstein.

Galelio, Newton and Einstein deserve these special recognition because they are responsible for taking physics/science towards modern era/technology .

If these three physicist/scientist were not in the world then I don't think so we will able to achieve modern technology this much earlier.

Galileo Galilei, Isaac Newton, and Albert Einstein indeed deserve special recognition in the field of physics due to their monumental contributions that revolutionized our understanding of the universe. While they built upon the work of their predecessors, their unique insights and groundbreaking discoveries have shaped modern physics significantly.

1. Galileo Galilei:

Galileo is often referred to as the "father of modern observational astronomy" and the "father of modern physics." He made pioneering observations using telescopes and provided experimental evidence to support the heliocentric model proposed by Nicolaus Copernicus. Galileo's observations of the moons of Jupiter and the phases of Venus further challenged the geocentric view of the universe prevalent at the time. He formulated the laws of motion, laying the groundwork for Newton's later work, and made key contributions to the study of projectiles, buoyancy, and mechanics. His emphasis on experimentation and empirical evidence set the stage for the scientific method.

2. Isaac Newton:

Newton's achievements are immense, and he is considered one of the greatest scientific minds in history. He formulated the laws of motion, universal gravitation, and calculus. His masterpiece, "Philosophiæ Naturalis Principia Mathematica," laid the foundation for classical mechanics and provided a comprehensive mathematical framework for understanding motion and forces in the universe. Newton's work profoundly influenced subsequent generations of physicists and played a crucial role in the scientific revolution of the 17th century.

3. Albert Einstein:

Einstein's contributions transformed our understanding of space, time, and gravity. His theory of special relativity introduced the concept of spacetime and challenged the classical notions of absolute space and time. In his theory of general relativity, Einstein proposed that gravity is the curvature of spacetime caused by the presence of mass and energy. This led to groundbreaking predictions, such as gravitational waves and the bending of light around massive objects. Einstein's work not only advanced theoretical physics but also had practical applications, such as the development of GPS technology.

While these physicists have received significant recognition, it is essential to acknowledge that the history of science is filled with brilliant minds who may not have achieved the same level of fame. One such overlooked physicist is Emmy Noether.

In conclusion, Galileo Galilei, Isaac Newton, and Albert Einstein deserve the special recognition they receive for their exceptional contributions to physics. However, it is important to remember that the history of science is replete with brilliant minds, and physicists like Emmy Noether also made indispensable contributions that have shaped our understanding of the universe.

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Answer:

Rate of Reaction of B is more.

Explanation:

Rate of reaction  refer to the speed at which product are formed.

A is completed in 57 seconds and reaction B is completed in 48 seconds

therefore reaction b speed is more. Therefore rate of Reaction of B is more.

Answer:

both statements are truth

Explanation:

a-The Joule effect, also called Joule's law, is the thermal manifestation of electrical resistance. ... In all these cases, it is intended to generate thermal energy with electricity passing through its conductors. This heat they give off is due to the Joule effect.

b-sure of a liquid tank depends only on the density of the liquid and depth from the free surface. It is a scalar quantity and is same in all directions, at a point.

Answer: 267 m

Explanation:

2.99x10^8 m/s

———————-

1.12 x 10^6 Hz

The exact same.  gravity has no effect on mass.

Answer:

Explanation:

Answer:

1 lb. is 453.592 grams

Explanation:

1lb is 453.592 grams

The cost of driving the car for 410 miles would be $58.83.

To find out how much it costs to drive 410 miles when gasoline costs $3.30 per gallon, you need to follow these steps:

So, the final answer is $58.83.

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The Fisher hypothesis, proposed by economist Irving Fisher, relates the nominal interest rate (i) to the real interest rate (r) and the expected inflation rate (π). According to the Fisher hypothesis, the nominal interest rate is equal to the sum of the real interest rate and the expected inflation rate.

To calculate the nominal interest rate, we can use the following formula:

i = r + π

Given that the annual real rate of interest (r) is 6% and the expected inflation rate (π) is 2%, we can substitute these values into the formula to find the nominal interest rate (i):

i = 6% + 2% = 8%

Therefore, the nominal interest rate, according to the Fisher hypothesis, would be 8%.

The Fisher hypothesis suggests that if the real interest rate remains constant, changes in the expected inflation rate will lead to corresponding changes in the nominal interest rate. When expected inflation is higher, lenders will demand higher nominal interest rates to compensate for the erosion of purchasing power over time. Conversely, if expected inflation is lower, nominal interest rates may decrease as lenders require less compensation for inflation.

It is important to note that the Fisher hypothesis assumes rational expectations, meaning that individuals accurately predict future inflation rates. In practice, however, inflation expectations can be influenced by various factors, and actual inflation may deviate from expectations. Nonetheless, the Fisher hypothesis provides a useful framework for understanding the relationship between real and nominal interest rates in an inflationary environment.

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Answer:

He is gaining kinetic energy and losing potential energy

Explanation:

Answer:

Kinetic or motion energy

Explanation:

Answer:

d

Explanation:

I really don't know how to explain

The time plane needs to take off is 12 sec if the plane accelerates from rest at a constant rate of 5.00ms² along a runway that is 1800m long.

We can use the kinematic equation that relates the final velocity, initial velocity, acceleration, and time to solve this problem:

\(v_f\) = \(v_i\) + at

where:

\(v_f\) = final velocity of the plane (takeoff velocity)

\(v_i\) = initial velocity of the plane (0 m/s)

a = acceleration of the plane (5.00 m/s²)

t = time needed to take off

We also know that the plane takes off when it reaches the end of the runway, so we can use another kinematic equation that relates the distance, initial velocity, acceleration, and time:

d = \(v_i\)t + 0.5a × t²

where:

d = distance traveled by plane (1800 m)

We can solve the first equation for t:

t = (\(v_f\) - \(v_i\)) / a

Since the initial velocity is 0 m/s, this simplifies to:

t = \(v_f\) / a

Substituting this expression for t into the second equation, we get:

d = 0.5a(\(v_f\)/a)²

Simplifying this expression:

d = 0.5 × \(v_f\)² / a

Multiplying both sides by 2/a:

d × 2/a = \(v_f\)² / a

Taking the square root of both sides:

\(v_f\) = √(2ad)

Now we can substitute the values we know and solve for \(v_f\):

\(v_f\) = √(2 × 5.00 m/s² × 1800 m) = 60.0 m/s

Finally, we can use the first kinematic equation to solve for t:

t = \(v_f\) / a = 60.0 m/s / 5.00 m/s² = 12.0 s

Therefore, it will take the plane 12.0 seconds to take off.

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Genetic testing and blood typing helped mitigate the effects of blood

reactions and diseases for many people by using  Cytogenetic Testing.

In cytogenetics, the entire chromosome is examined for anomalies. Under a microscope, the chromosomes of a human cell that is dividing can be seen plainly. The easiest cells to obtain for cytogenetic study are white blood cells, particularly T lymphocytes since they can divide quickly in cell culture and may be simply isolated from blood. For cytogenetic analysis, cells can also be cultivated from various tissues, including bone marrow (for leukaemia), amniotic fluid (for prenatal diagnosis), and other tissue biopsies.

Chromosomes are preserved, dispersed on microscope slides, and stained after many days of cell culture. Each of the chromosomes can be recognised separately thanks to the staining techniques used in routine examination. Analysis of chromosomal structure is possible thanks to the unique bands of each chromosome that staining reveals.

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The new diameter of the brass cylinder when it is compressed with a 3000 N force can be calculated using the equation: D = D0(1-v)(1-F/E) where D0 is the original diameter, v is the Poisson ratio, F is the applied force and E is the Young's modulus. In this case, D = 10 mm (1-0.34)(1-3000 N/97 GPa) = 8.56 mm.

Young's modulus (also known as the modulus of elasticity) is a measure of the stiffness of an elastic material, defined as the ratio of the stress applied to the material to the strain it produces. It is a measure of the ability of a material to resist being deformed when a force is applied to it. Poisson's ratio is the ratio of transverse strain to longitudinal strain in an elastic material when it is stretched or compressed. It is a measure of the relative volume change of a material when it is subjected to an applied force.

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Answer:

0.4 g/cm^3

Explanation:

The density of an object can be found using the following formula.

d= m/v

where m is the mass and v is the volume.

The mass of the metal is 6 grams and the volume is 15 centimeters^3

m=6 g

v= 15 cm^3

Substitute these into the formula.

d= 6 g/ 15 cm^3

Divide 6 g by 15 cm^3 (6/15=0.4)

d= 0.4 g/ cm^3

The density of the metal is 0.4 grams per cubic centimeter.

Density = (mass) / (volume)

Density = (6 g) / (15 cm³)

Density = (6/15) (g/cm³)

Density = 0.4 g/cm³

This 'metal' has less than half the density of water, and it floats on water !  It cannot be of Earthly origin, and must have been dropped here by aliens.

Either that, or else the metal has been hammered and stretched and beaten out and shaped so that it has an artificially large volume ... something like the way sailing ships are made out of thick plates of steel.

Masses and velocities of cart A and cart B are given, then after the collision the center of mass of the two cart system has a speed of 1 m/s.

Strength or force gained by motion or by a series of events is called momentum.

As, Initial momentum = final momentum

So, pA + pB =  p (A + B)

then, mA · vA + mB · vB = (mA + mB) · v

pA and pB are initial momentum of carts A and B respectively.

p (A +B) is momentum of the two cart system after the collision.

mA and mB are masses of carts A and B respectively.

vA and vB are initial velocity of carts A and B.

v is velocity of the two cart system.

Given; mA = 0.2 kg

mB = 0.4 kg

vA = 3 m/s

vB = 0 m/s

Solving the equation for v:

As, mA · vA + mB · vB = (mA + mB) · v

0.2 * 3  + 0.4 * 0 = (0.2 kg + 0.4 kg) * v

0.6 = 0.6 * v

v = 1 m/s

After collision, center of mass of the two cart system has a speed of 1 m/s.

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Answer:

The correct option is;

2.26 × 10⁸

Explanation:

The index of refraction, in a medium, n = The speed of light in air/(The speed of light in the medium)

The speed of light = 299792458 m/s

Given that the index of refraction of water = 1.33, we have;

1.33 = 299792458/(The speed of light in water)

The speed of light in water = 299792458/1.33 = 225407863.58 m/s ≈ 2.26 × 10⁸ m/s

The speed of light in water ≈ 2.26 × 10⁸ m/s

Therefore;

v ≈ 2.26 × 10⁸ m/s.

Simple harmonic motion is a particular kind of periodic motion in which the restoring force on the moving item is inversely proportional to the size of the displacement and acts in the direction of the object's equilibrium position.

A periodic variable's amplitude is a gauge of its change over a single period.

The maximum acceleration of the oscillator is given as:

A = a× ω²

where,

A = acceleration

a = amplitude

ω² = angular frequency

As we know that amplitude directly depend on velocity and if the amplitude is "a". If the amplitude is doubled, the maximum velocity is also doubled.

Acceleration is velocity in a given time.

Therefore, from all the above, we can conclude that amplitude of the oscillation is related to acceleration of the SH oscillator as it is directly proportional to each other. If the amplitude is doubled, the acceleration is doubled too.

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Answer:

35m/s south

Explanation:

Answer:

It's C

Explanation:

Your welcome!

Answer:

Well I think that 16 year olds should get a job because this could benefit them. They can learn to save and manage there own money. And I think that 16 yrs olds should get a job because this can help them in positive way.

Explanation:

Hope this made sense and help!!!