There are approximately 900,000 television households in the San Diego County market. During a Sunday afternoon in October, 50 percent of the households had their television sets turned on and 200,000 were watching the San Diego Chargers versus Pittsburgh Steelers NFL football game on Channel 7. The approximate share of audience for the game would be:

A. 22.

B. 44.

C. 50.

D. 200.

E. 100

Answer: in the Newton concluded that objects fall because they are pulled by Earth's gravity. Einstein's interpretation was that these objects do not fall.

Explanation: These objects and Earth just freely move in a curved spacetime and this curvature is induced by mass and energy of these objects. - I HOPE THAT HELPED!!

If the oscillation amplitude is 0.22m, from a 0.29kg harmonic oscillator which has a total of mechanical energy 3.6j, the oscillation frequency is 4.141Hz.

It is a number of oscillations in the one-time unit, says per second. For example, a pendulum that takes 0.5s to make one full oscillation has a frequency of 1 oscillation per 0.5s or 2 oscillations / second.

How to calculate the oscillation frequency?

mass (m) = 0.29kg

Total energy (E) = 3.6j

amplitude (x) = 0.22m

E = 1/2 k*x^2

k = 2*E / x^2

= 2 * 3.6 / 0.22^2

= 148.76 N/m

Frequency (v) = 1/2π √k/m

= 1/2*3.14 * √148.76 / 0.22

= 4.141Hz

Therefore, the oscillation frequency is 4.141Hz.

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The reading on the scale is 882.6 N when the elevator accelerates upwards with an acceleration of 4.90 m/s².

Given that the mass of a person is 60.0 kg and the elevator accelerates upwards with an acceleration of 4.90 m/s², we have to determine the reading on the scale.

Let F be the force exerted by the scale on the person. Then, by Newton's second law of motion, the net force acting on the person is Fnet= m * a

where m = 60.0 kg is the mass of the person and a = 4.90 m/s² is the acceleration of the elevator. Hence, the net force acting on the person is given by;

Fnet = 60.0 kg * 4.90 m/s²

Fnet = 294.0 N

Therefore, the scale reading is equal to the force exerted by the scale on the person. Since the elevator is accelerating upwards, the force exerted by the scale on the person is greater than the weight of the person, which is the force of gravity acting on the person.

The force of gravity acting on the person is given by;

Fg = m * g, where g = 9.81 m/s² is the acceleration due to gravity. Hence, the force of gravity acting on the person is given by;

Fg = 60.0 kg * 9.81 m/s²Fg = 588.6 N

Therefore, the scale reading is given by the sum of the force of gravity acting on the person and the net force acting on the person;

F = Fg + Fnet

F = 588.6 N + 294.0 N

F = 882.6 N

Thus, the reading on the scale is 882.6 N when the elevator accelerates upwards with an acceleration of 4.90 m/s².

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Answer:

do we have to choose 2 answers here?

Answer:

most probably it's C

Explanation:

alveoli is surrounded by capillaries and whit that option small intestines is also there

Answer:

A)    Net force in the horizontal direction is 19.641 N

B)    Net force in the vertical direction is 20 N

Explanation:

The normal force (20 N) and the weight force (20 N) cancel out.

Next lets find the horizontal and vertical components on the right side of the diagram.

We are given the angle and the hypotenuse.

First lets find the opposite side (vertical component).

\(sin(x)\frac{O}{H}\)

\(O=Hsin(x)\)

\(O=40sin(30)\)

\(O=20\)

Now lets find the adjacent side (horizontal component).

\(cos(x)=\frac{A}{H}\)

\(A=Hcos(x)\)

\(A=40cos(30)\)

\(A=34.641\)

Now we can ignore the 40 N force.

We are left with 1 force in the vertical direction.

So the net force in the vertical direction is 20 N

We are left with 2 forces in the horizontal direction.

We have 1 force of 15 Newtons moving in the left direction.

We also another force of 34.641 Newtons moving to the right.

So the net force in the horizontal direction is 19.641 N.

The symbol "m" is used for both apparent magnitude and absolute magnitude, but they represent different quantities in different contexts.

The usual symbols used for the following properties of a star are:

- Brightness: Usually represented by the symbol "B" or "m". It refers to the amount of light received from a star as observed from a particular location.

- Luminosity: Represented by the symbol "L". It refers to the total amount of energy radiated by a star per unit of time.

- Apparent Magnitude: Represented by the symbol "m". It is a measure of the brightness of a star as observed from Earth. Lower values indicate brighter stars.

- Absolute Magnitude: Also represented by the symbol "m". It is the intrinsic brightness of a star, defined as the apparent magnitude a star would have if it were placed at a standard distance of 10 parsecs (32.6 light-years) from the observer.

- Temperature: Represented by the symbol "T". It refers to the surface temperature of a star, typically measured in Kelvin.

- Mass: Represented by the symbol "M". It is the amount of matter contained in a star, typically measured in solar masses (M☉).

Note: The symbol "m" is used for both apparent magnitude and absolute magnitude, but they represent different quantities in different contexts.

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Answer:

In two-dimensional projectile motion, such as that of a football or other thrown object, there is both a vertical and a horizontal component to the motion. ... The key to analyzing two-dimensional projectile motion is to break it into two motions, one along the horizontal axis and the other along the vertical.

Answer:

In two-dimensional projectile motion, such as that of a football or other thrown object, there is both a vertical and a horizontal component to the motion. ... The key to analyzing two-dimensional projectile motion is to break it into two motions, one along the horizontal axis and the other along the vertical.

Answer:

85 miles .

Explanation:

Displacement along the 110 South freeway = 260 - 150  =  110 miles

Displacement along the 110 North freeway = 150 - 175   = - 25 miles

Net displacement = 110 - 25 = 85 miles

So Joey's displacement from the 260 mile marker is 85 miles .

Gravitational force is not related to other force because it is related to gravity.

Electrostatic force and magnetic force are link to each other because both have charges. Electrostatic force is type of force that is present between two electrically charged particles. They can either be a repulsive or attractive force.

So we can conclude that Gravitational force is not related to other force because it is related to gravity.

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Dimesnions of the lightest open top right cylindrical can that can hold a volume of 1000\(cm^{3}\) is \(r=h\) ≈ 6.83cm

The volume of a right circular cylinder is V\(=\pi r^{2} h\),

where \(r\) is the radius of the circular base of the cylinder and \(h\) is the height of the cylinder. If the cylinder is close-top, the surface area of the cylinder is \(A\)\(=\)\(2\pi r^{2} +2\pi rh\).

Therefore, if it's open-top, its surface area is A =\(\pi r^2 + 2\pi r h.\)

In order to find the smallest surface area of the cylindrical can that can hold a volume of 1000 \(cm^{3}\),

we must express \(A\) in terms of one variable only. Let's express \(A\) in terms of \(r\). So we have to express \(h\) in terms of \(r\) and we know that \(\pi r^2h = 1000.\)

Thus we have:

\(\pi r^{2} h=1000\)

\(h=\frac{1000}{\pi r^{2} }\)

So, the surface area in terms of \(r\) is \(A=\pi r^{2} +2\pi r(\frac{1000}{\pi r^{2} })\)

\(=\pi r^{2} +\frac{2000}{r}\)

Now lets differentiate \(A\) with respect to \(r\) and set it to 0 and solve for \(r\):

\(\frac{dA}{dr} =2\pi r-\frac{2000}{r^{2} } \\0=2\pi r-\frac{2000}{r^{2} }\)

\(2\pi r=\frac{2000}{r^{2} }\\ 2\pi r^{3} =2000\\r^{3}=\frac{1000}{\pi }\)\(r=\sqrt[3]{\frac{1000}{\pi } }\)≈ \(6.83\)

Since, \(h=\frac{1000}{\pi r^{2} } ,\)

\(h=\frac{1000}{\pi (\sqrt[3]{\frac{1000}{\pi })^{2} } }\) ≈ \(6.83\)

therefore, when the radius \(r\) and the height \(h\) are both 6.83  then the open-top cylinder will have the smallest surface area that can hold 1000 \(cm^{3}\)

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Answer:

please take clean picture

The amount of energy needed to raise the temperature of 1 gram of a substance by 1 degree Celsius

Answer:

Fossil fuels store energy from the sun as

Explanation:

Answer:

V=4.5 m/s

Explanation:

KE=1/2mv^2

1500=1/2(15000)v^2

answer :4.5m/s

Explanation:

V=30,000J/1500kg

V=20m²/s²

V=4.5m/s

Answer:

blue and purple light

Explanation:

Light waves have very, very short wavelengths. Red light waves have wavelengths around 700 nanometers (nm), while blue and purple light have even shorter waves with wavelengths around 400 or 500 nm.

Answer:

B

Explanation:

If you really read and dissect every other question they do not make sense

Answer:

Explanation:

time= distance/speed

20km/ 15km/h

= 1 1/3 hours (4/3 in mixed fraction)

Because of this, the parallel component to the table's plane is 4.110 N and the perpendicular component is 1.169 N.

The component is referred to as an x-component if it is parallel to the axis and as a y-component if it is parallel to the y-axis.

The following formula can be used to determine the weight of the lemonade:

Weight = mass x gravitational acceleration

where the gravitational acceleration is approximately 9.8 m/s².

Weight of the lemonade = 0.44 kg x 9.8 m/s² = 4.312 N

The table makes a 15 degree angle with the horizontal.

The weight multiplied by the sine of the angle yields the perpendicular component of the weight

Perpendicular component = Weight x sin(15)

= 4.312 N x sin(15)

= 1.169 N

The parallel component of the weight is equal to the weight times the cosine of the angle:

Parallel component = Weight x cos(15)

= 4.312 N x cos(15)

= 4.110 N.

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Answer:

The flat Earth model is an archaic conception of Earth's shape as a plane or disk. Many ancient cultures subscribed to a flat Earth and due to this people still belive earth is flat but scientist proven earth is round .

Explanation:

The work done by the normal force is 0 J, and the net work done on the block is also 0 J.

The work done by a force is given by the equation:

Work = Force * Distance * cos(θ),

where θ is the angle between the force vector and the displacement vector.

In this case, the normal force acts perpendicular to the displacement of the block. Since the angle between the normal force and displacement is 90 degrees, cos(90°) = 0. Therefore, the work done by the normal force is 0 J.

The net work done on an object is the sum of the work done by all the forces acting on it. If the only force acting on the block is the normal force (which is perpendicular to the displacement), then the net work done is also 0 J.

This implies that either no external force is applied to the block, or the applied forces are balanced such that the work done by one force cancels out the work done by the other force. In either case, the net work done on the block is 0 J.

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The binding energy of electrons to the metal is 1.350 eV.

The binding energy of electrons to a metal refers to the energy required to remove an electron from the metal's surface.

It can be determined by subtracting the maximum kinetic energy of the ejected electrons from the energy of the incident light.

Wavelength of violet light = 425 nm

Maximum kinetic energy of ejected electrons = 0.850 eV

To calculate the binding energy:

1. Convert the wavelength of light from nanometers (nm) to electronvolts (eV) using the equation: energy (eV) = (1240 eV·nm) / wavelength (nm).

  - Energy of violet light = (1240 eV·nm) / 425 nm = 2.918 eV

2. Subtract the maximum kinetic energy of ejected electrons from the energy of the incident light to obtain the binding energy.

  - Binding energy = Energy of violet light - Maximum kinetic energy = 2.918 eV - 0.850 eV = 2.068 eV

Therefore, the binding energy of electrons to the metal is approximately 2.068 eV. This value represents the energy required to remove an electron from the metal's surface when exposed to violet light of wavelength 425 nm.

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Answer: Gently reduce pressure on brakes – if on ice, push in the clutch to let the wheels turn freely.

Turn the steering wheel quickly – look and steer in the direction you want to go.

Counter-steer – as the vehicle gets back on course, counter-steer to avoid skidding in the opposite direction.

Explanation:

The correct answer is i) P(x = [0, W/4]) = πχ/2, ii) P(x = [W/4, W/2]) = πχ/2, iii) P(x = [-W/2, W/2]) = πχ and iv) The probability of finding the electron between -W/2 and W/2 is 1, which means that the electron is definitely present within this region.

The wave function is given as: W W 2 πχ y(x) = cos(; < x < W W 2 2.

The wave function is zero everywhere else. Now, to determine the probability of finding the electron in the given regions:

(i) Between 0 and W/4:

To calculate the probability of finding the electron between 0 and W/4, we integrate the probability density function for x between 0 and W/4 as follows:

P(x = [0, W/4]) = ∫W/40 2πχ cos2(πx/W)dx

P(x = [0, W/4]) = (2πχ/W)∫W/40 cos2(πx/W)dx

P(x = [0, W/4]) = (2πχ/W)∫W/40 (1 + cos(2πx/W))/2 dx

P(x = [0, W/4]) = (2πχ/W) [x/2 + (W/8)sin(2πx/W)]W/4 0

P(x = [0, W/4]) = πχ/2

(ii) Between W/4 and W/2:

To calculate the probability of finding the electron between W/4 and W/2, we integrate the probability density function for x between W/4 and W/2 as follows:

P(x = [W/4, W/2]) = ∫W/4W/2 2πχ cos2(πx/W)dx

P(x = [W/4, W/2]) = (2πχ/W)∫W/40 cos2(πx/W)dx

P(x = [W/4, W/2]) = (2πχ/W)∫W/40 (1 + cos(2πx/W))/2 dx

P(x = [W/4, W/2]) = (2πχ/W) [x/2 + (W/8)sin(2πx/W)]W/2 W/4

P(x = [W/4, W/2]) = πχ/2

(iii) Between -W/2 and W/2:To calculate the probability of finding the electron between -W/2 and W/2, we integrate the probability density function for x between -W/2 and W/2 as follows:

P(x = [-W/2, W/2]) = ∫W/2-W/2 2πχ cos2(πx/W)dx

P(x = [-W/2, W/2]) = (2πχ/W)∫W/20 cos2(πx/W)dx

P(x = [-W/2, W/2]) = (2πχ/W)∫W/20 (1 + cos(2πx/W))/2 dx

P(x = [-W/2, W/2]) = (2πχ/W) [x/2 + (W/8)sin(2πx/W)]W/2 -W/2

P(x = [-W/2, W/2]) = πχ

(iv) Comment on the significance of this value: The probability of finding the electron between -W/2 and W/2 is 1, which means that the electron is definitely present within this region.

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Answer:

A) Gravity.

Explanation:

Earth is stuck in orbit around the sun, because of the Sun's gravitational pull. In this scenario, the string represents gravity, keeping the Earth attracted towards the sun.

Hope this helps! Feel free to give me Brainliest if you feel this helped. Have a good day and good luck with your assignment :)

The student ties a string around a weight and swings the weight in a circle around her body. If the student represents the sun and the weight represents earth, the string will represent GRAVITY then.

In mechanics, gravity—also known as gravitation—is the constant force of attraction that pulls all things together. It has little impact on determining the intrinsic characteristics of common stuff because it is by far the weakest known force in nature.

In contrast, it governs the formations and evolution of stars, galaxies, and the entire cosmos by its extensive and ubiquitous action, which affects the trajectories of objects in the solar system and beyond the universe. All objects on Earth experience weight, or a gravitational pull that is proportionate to their mass and is imposed by the planet's mass.

As the student represents the sun and the weight represents earth, the string will represent GRAVITY then. Hence, option (A) is correct.

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Answer:

Sir Isaac Newton was an English mathematician, physicist, astronomer, theologian, and author

Explanation:

but he is most importantly known for having formulated the theory of universal gravity

and for having invented the calculus in the mid to late 1660s

Title: Kinetic Energy Lab Report

Abstract:

The Kinetic Energy Lab aimed to investigate the relationship between an object's mass and its kinetic energy. The experiment involved measuring the mass of different objects and calculating their respective kinetic energies using the formula KE = 0.5 * mass * velocity^2. The velocities of the objects were kept constant throughout the experiment. The results showed a clear correlation between mass and kinetic energy, confirming the theoretical understanding that kinetic energy is directly proportional to an object's mass.

Introduction:

The concept of kinetic energy is an essential aspect of physics, describing the energy possessed by an object due to its motion. According to the kinetic energy equation, the amount of kinetic energy depends on both the mass and velocity of the object. This experiment focused on exploring the relationship between an object's mass and its kinetic energy, keeping velocity constant. The objective was to determine if an increase in mass would result in a corresponding increase in kinetic energy.

Methodology:

1. Gathered various objects of different masses.

2. Measured and recorded the mass of each object using a calibrated balance.

3. Kept the velocity constant by using a consistent method to impart motion to the objects.

4. Calculated the kinetic energy of each object using the formula KE = 0.5 * mass * velocity^2.

5. Recorded the calculated kinetic energies for each object.

Results:

The data collected from the experiment is presented in Table 1 below.

Table 1: Mass and Kinetic Energy of Objects

Object    Mass (kg)   Kinetic Energy (J)

----------------------------------------

Object A   0.5        10.0

Object B   1.0        20.0

Object C   1.5        30.0

Object D   2.0        40.0

Discussion:

The results clearly demonstrate a direct relationship between mass and kinetic energy. As the mass of the objects increased, the kinetic energy also increased proportionally. This aligns with the theoretical understanding that kinetic energy is directly proportional to an object's mass. The experiment's findings support the equation KE = 0.5 * mass * velocity^2, where mass plays a crucial role in determining the amount of kinetic energy an object possesses. The constant velocity ensured that any observed differences in kinetic energy were solely due to variations in mass.

Conclusion:

The Kinetic Energy Lab successfully confirmed the relationship between an object's mass and its kinetic energy. The data collected and analyzed demonstrated that an increase in mass led to a corresponding increase in kinetic energy, while keeping velocity constant. The experiment's findings support the theoretical understanding of kinetic energy and provide a practical example of its application. This knowledge contributes to a deeper comprehension of energy and motion in the field of physics.

References:

[Include any references or sources used in the lab report, such as textbooks or scientific articles.]

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Group of answer choices.

A. James likes ch.atting with his coworkers but is easily distracted.

B. James does some of his coworkers' work because he wants to be popular.

C. James accepts additional tasks at work as a way to show he can handle greater responsibility.

D. James turns down additional tasks at work because he doesn't want more responsibility.

Answer:

C. James accepts additional tasks at work as a way to show he can handle greater responsibility.

Explanation:

An employee can be defined as an individual who is employed by an employer of labor to perform specific tasks, duties or functions in an organization.

Basically, an employee is saddled with the responsibility of providing specific services to the organization or company where he is currently employed while being paid a certain amount of money hourly, daily, weekly, or monthly depending on the contractual agreement between the two parties (employer and employee).

A productive employee is a kind of person that is highly effective and efficient in the performance of his or her duties, especially through the use of their skills, knowledge, competence and expertise (experience). Also, a positive attitude or attribute are ethical and morally right characteristics  (qualities) that a person exhibits.

Typically, there exist a strong relationship between a positive attitude and the level of productivity of an employee.

Hence, an example of the correlation of productivity and a positive attitude would be James accepting additional tasks at work as a way to show he can handle greater responsibility. Thus, he is more focused on challenging himself to handle greater responsibility by accepting additional tasks at his work place.