All modern electrical equipment is based on an understanding of the relationship between _________ and _________.

If a rocket takes off from Earth with a certain force, there are several things that must be true about Earth to make this possible.

Firstly, Earth must have a gravitational field that attracts the rocket toward its center. This gravitational force pulls the rocket toward the ground, and the rocket must overcome it with a force greater than the force of gravity in order to take off.

Secondly, Earth's atmosphere must be present, as the rocket needs to push against the air molecules to create thrust and lift off the ground. Thirdly, Earth's surface must be firm enough to support the launch of the rocket, with a strong and stable launchpad to prevent any accidents.

Fourthly, Earth's rotational speed and position in its orbit around the Sun must also be taken into account, as this affects the required trajectory of the rocket for a successful launch. Overall, a combination of Earth's gravitational force, atmosphere, surface conditions, and position in its orbit all play a crucial role in enabling a rocket to take off from Earth.

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The bomber aircraft must drop the bomb at an angle of sight of 45 degrees to hit the target when flying horizontally at a height of 9.5 km and a speed of 1800 km/h.

It is important to clarify that the initial part of the question is unclear and seems unrelated to the second part about the bomber aircraft. Nevertheless, I will provide an answer based on the information provided in the second part.When the bomber aircraft is flying horizontally at a height of 9.5 km (9500 meters) above a target, and its speed is given as 1800 km/h, we can determine the angle of sight at which it must drop a bomb to hit the target.To find the angle of sight, we need to consider the motion of the aircraft and the effect of gravity on the bomb. When the bomb is released, it will follow a curved trajectory due to the horizontal motion of the aircraft and the downward acceleration caused by gravity.The horizontal distance traveled by the bomb will be equal to the horizontal speed of the aircraft multiplied by the time it takes for the bomb to reach the ground. We can calculate the time using the equation:

time = height / vertical velocity

Given that the height is 9500 meters and the vertical velocity can be determined by converting the speed from km/h to m/s:

vertical velocity = 1800 km/h * (1000 m/1 km) * (1 h/3600 s) = 500 m/s

Substituting the values into the equation, we get:

time = 9500 m / 500 m/s = 19 seconds

Now, we can calculate the horizontal distance traveled by the bomb using the equation:

horizontal distance = horizontal speed * time

horizontal distance = 1800 km/h * (1000 m/1 km) * (1 h/3600 s) * 19 s = 9500 meters

Since the bomber aircraft is directly above the target, the horizontal distance traveled by the bomb is the same as the distance to the target. Now we can determine the angle of sight.Using trigonometry, the angle of sight can be calculated as:

angle of sight = arctan(horizontal distance / height)

angle of sight = arctan(9500 m / 9500 m) = arctan(1) = 45 degrees

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By considering building a system of two positive charges: The work done by an external agent is negative.

Any attempt by an outside force to combine two positive charges would be harmful. This is done in order to overcome the electrical force that now opposes the movement of the two positive charges toward one another. Negative work is defined as an effort made to control a disagreeable factor. However, if the two positive charges are already close to one another and the external agent operates to separate them, the work done would be beneficial. This is due to how weak the electrical force that holds the two positive charges together becomes when they are separated, necessitating the aid of an outside force. When work done to separate charges, it is viewed favorably. It's important to keep in mind that the concept of work includes all kinds of forces, not only electrical ones. The sign of the work generated by an external source is determined by the force's direction and the charges' displacement. If both the force and the displacement are travelling in the same direction, the work is positive. If the force and displacement are moving in the opposite directions, the work is negative.

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\(A = r x f\) gives the torque around axis a due to force f. In the Cartesian coordinates (0, 0), there is no torque about axis a.

The cross product of the position vector r from the axis of rotation to the site of application of force and the force vector f gives the torque an around axis a due to the force f. \(A = r x f\)  in mathematics. When the rotational axis's Cartesian coordinates are (0, 0), the position vector r is also (0, 0), and the cross product of r and f is zero. As a result, there is no torque about axis an at the Cartesian coordinates (0, 0). This suggests that the system is in rotational equilibrium about point (0, 0) and that the force f does not produce any torque about axis an at this location.

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The compressed air must exert a force of approximately 164.8 N to lift the car weighing 12600 N.

Area of the small piston = πr² = π(4.68 cm)² ≈ 68.85 cm²

Area of the large piston = πR² = π(18.9 cm)² ≈ 1123.90 cm²

1 = F2

PA1 = PA2

P = F2/A2

Now we can find the force required to lift the car:

F1 = PA1 = Pπr²

F1 = (F2/A2)πr²

F1 = (12600 N)/(1123.90 cm²)π(4.68 cm)²

F1 ≈ 164.8 N

Force is a physical quantity that describes the interaction between two objects. It is defined as the push or pull on an object that causes it to accelerate or deform. Force is measured in units of newtons (N) and is represented by the symbol F.

There are many different types of forces, including gravitational, electromagnetic, and nuclear forces. Each of these forces acts over a specific range and can have different strengths and effects on objects. According to Newton's laws of motion, an object will remain at rest or in uniform motion unless acted upon by a net force.

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C. the amount of money in your checking account

You told your insane friend that it will take the book 5.6 s to get to the ground.

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

Height (H) = 155 m

NOTE: Acceleration due to gravity (g) = 10 m/s²

The time taken for the book to get to ground can be obtained as follow:

155 = ½ × 10 × t²

155 = 5 × t²

\(t^{2} = \frac{155}{5}\\\\\)

t² = 31

\(t = \sqrt{31}\)

Thus, the time taken for the book to get to the ground is 5.6 s

Hence, you told your insane friend that it will take the book 5.6 s to get to the ground.

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Answer:

2,340,000 J

Explanation:

Work done can be described as when energy or force is applied to an object to cause displacement

Work done is measured in joules

1 Watt = 1 Joule / second

650 watts = 650 Joules / second

convert 650 joules to seconds by multiplying by 3600

650 x 3600 = 2,340,000 J

a. The surface temperature of the star is 4830 K.

b. The peak of the star's spectrum occurs at a wavelength of 1500 A. The wavelength falls within the ultraviolet range of the electromagnetic spectrum.

a. According to Wien's law, the peak wavelength (λ) of radiation emitted by a blackbody is inversely proportional to the temperature (T) of the blackbody. The mathematical formula is:λmaxT = 2.898 × 10-3 m K

Here, λmax = 6000 A = 6000 × 10-10 m = 6 × 10-7 mT

herefore, T = 2.898 × 10-3 m K / 6 × 10-7 m = 4830 K.

So, the surface temperature of the star is 4830 K.

b. According to Wien's law, the peak wavelength of radiation emitted by a blackbody is inversely proportional to the temperature of the blackbody. This means that when the temperature of the blackbody is increased, the peak wavelength will decrease.

In this case, if the temperature of the star were four times higher, its surface temperature would be T = 4 × 4830 K = 19320 K.

The peak wavelength of the star can be calculated using Wien's law, λmaxT = 2.898 × 10-3 m Kλmax = (2.898 × 10-3 m K) / 19320 Kλmax = 1.5 × 10-7 m = 1500 A.

The peak of the star's spectrum occurs at a wavelength of 1500 A. The wavelength falls within the ultraviolet range of the electromagnetic spectrum.

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Your math problem

8−−>8−−>3−−>12<−−

whats your question xD

When Jack argues with the umpire over a call in baseball, he is showing poor sportsmanship.The correct answer is option B.

Poor sportsmanship refers to behavior that violates the principles of fair play, respect, and integrity in sports. It encompasses actions such as arguing, complaining, or displaying disrespectful behavior towards officials, opponents, or teammates.

Engaging in a dispute with the umpire goes against the spirit of sportsmanship, as it undermines the authority and impartiality of the officials.

Sportsmanship encourages players to accept the decisions made by referees or umpires, even if they may disagree. It promotes respect for the game, its rules, and the individuals responsible for enforcing them.

Arguing with the umpire can also create a negative atmosphere and set a poor example for others, particularly younger players who may be observing the game.

It can lead to increased tension, disrupt the flow of the game, and even escalate into more serious conflicts.

In summary, Jack's behavior of arguing with the umpire demonstrates poor sportsmanship, as it disregards the principles of fair play, respect, and acceptance of officiating decisions.

Encouraging a more positive and respectful approach to resolving disagreements would contribute to a healthier sports environment.

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The probable question may be:

Jack is playing baseball and disagrees with the umpire's call. He argues with the umpire. What is Jack showing?

A. Enthusiasm

B. Poor sportsmanship

C. Diversity

D. Bad form

Answer:

1)force:- force is an external affert by any body on an object.

2) force and motion are related to each other. force helps to create motion in any object.

3) frictional force

4) Newton

Answer:

Net displacement = 3.2 m

Explanation:

Given:

Mass of man = 80 kg

Mass of trolley = 320 kg

Speed = 1 m/s

Time = 4 sec

Computation:

Displacement by man = 1 m/s × 4 sec

Displacement by man = 4 m

Net ext force (trolley) = com at rest

So,

320 × X = 80(4 - X)

32X = 32 - 8X

40X = 32

X = 0.8 m

Net displacement = 4 m - 0.8 m

Net displacement = 3.2 m

Answer:

3) 3.2 m

Explanation:

The computation of the displacement relative to the ground after 4 seconds is shown below:

Let us assume the following

Starting x coordinate is at the origin

As it does not involve any external force so x coordinated would remain unchanged

Now the separation between the man and the trolley is

\(= 4 \times 1\)

= 4 m

And, we assume the displacement of man be x

So, for trolley it would be (4 -x)

Now we develop the equation which is

\(80 \times x = 320 \times (4 - x)\)

x = 16 - 4x

Therefore x = 3.2 m

Answer:

A

Explanation:

When you dropping the swing, it increases the kinetic energy. In the middle, that is when it is at it's fullest potential. As it makes its way up, it pushes again the gravitational force, and soon, the swing will stop at the top for a VERY SHORT AND SMALL period of time. That is when it is at it's very weakest point, making the answer, indeed, A.

In terms of producing the most energy per unit of carbon dioxide released, natural gas is the best fossil fuel. Because a new crop can be planted after each harvest, biomass is a renewable resource and a low-carbon fuel.

Effects of human activities on the biophysical environment, or environmental challenges, most frequently include. Numerous human activities such as overpopulation, pollution, the burning of fossil fuels, and deforestation have an adverse effect on the physical environment. Climate change, soil erosion, poor air quality, and undrinkable water have all been brought on by changes like these.

There are three main ones that generally have an impact on most of them: the loss of biodiversity, water pollution, ocean acidification, and climate change

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The choice that correctly pairs a scientist with their work on atoms and elements is Thompson-the plum pudding model

Dalton's work on atoms and elements is called the atomic theory of matter. The quantum theory of the atom was proposed by Erwin Schrödinger. Bohr's work on atoms and elements is called planetary model / Bohr's atomic model. The uncertainty of particles in an atom is the work of Werner Heisenberg. Rutherford's work on atoms and elements is called Rutherford model of the atom or Rutherford atomic model.

The plum pudding model was the atomic model of J J Thomson. It was proposed in 1900. It explains the inner structure of the atom. He also discovered electrons during a cathode ray tube experiment in 1897.

Therefore, the choice that correctly pairs a scientist with their work on atoms and elements is Thompson-the plum pudding model

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the package will travel a horizontal distance of 1500 m/sec x 10.1 sec = 15,150 meters before hitting the ground. Assuming there is no air resistance, the package will travel horizontally at the same speed as the airplane, which is 1500 m/sec. The time it takes for the package to hit the ground can be calculated using the formula t = √(2h/g), where h is the initial height (500 m) and g is the acceleration due to gravity (9.8 m/s²). t = √(2(500)/9.8) = √102.04 ≈ 10.1 sec


To determine how far the package travels horizontally before hitting the ground, we need to find the time it takes for the package to fall 500 meters vertically and then use that time to calculate the horizontal distance traveled.
Step 1: Find the time it takes for the package to fall.
We'll use the free fall equation: h = 0.5 * g * t^2, where h is the height, g is the acceleration due to gravity (approximately 9.8 m/s^2), and t is the time.
500 = 0.5 * 9.8 * t^2
Solve for t:
t^2 = (500 * 2) / 9.8
t^2 ≈ 102.04
t ≈ √102.04
t ≈ 10.1 seconds
Step 2: Calculate the horizontal distance traveled.
Since the airplane is flying horizontally at 1500 m/s, we can multiply its speed by the time it takes for the package to fall:
Horizontal distance = speed * time
Horizontal distance = 1500 m/s * 10.1 s
Horizontal distance ≈ 15,150 meters
The package travels approximately 15,150 meters horizontally before hitting the ground.

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Answer:

D. 74

Explanation:

40/.54= 74

The maximum speed the truck can be moving without the crate sliding is 18.46 m/s and the child's speed at the lowest point of the swing is 4.77 m/s and the force exerted by the seat on the child at the lowest point is 342 N (upward).

1. To find the maximum speed of the truck without the crate sliding, we need to calculate the maximum static friction force. The maximum static friction force is given by the formula F_max = μ_s * m * g,

where μ_s is the coefficient of static friction, m is the mass of the crate, and g is the acceleration due to gravity. In this case, the maximum static friction force is equal to the centripetal force required to keep the crate from sliding,

which is equal to m * v² / r, where v is the velocity of the truck and r is the radius of the curve. Setting F_max equal to m * v² / r and solving for v, we get v = √(μ_s * g * r).

2. Plugging in the given values, we have μ_s = 0.610, g = 9.8 m/s², and r = 37.4 m. Substituting these values into the formula, we get v = √(0.610 * 9.8 * 37.4) ≈ 18.46 m/s.

3. To find the child's speed at the lowest point of the swing, we can use the conservation of mechanical energy. At the lowest point, all of the child's potential energy is converted to kinetic energy.

Therefore, we can equate the gravitational potential energy at the highest point to the kinetic energy at the lowest point: m * g * h = 0.5 * m * v², where m is the mass of the child, g is the acceleration due to gravity, h is the height of the swing, and v is the child's speed at the lowest point. Solving for v, we get v = √(2 * g * h).

4. Plugging in the given values, we have g = 9.8 m/s² and h = 3.10 m. Substituting these values into the formula, we get v = √(2 * 9.8 * 3.10) ≈ 4.77 m/s.

5. The force exerted by the seat on the child at the lowest point can be found using Newton's second law, F = m * a, where F is the force exerted by the seat, m is the mass of the child, and a is the acceleration.

At the lowest point, the child is accelerating towards the center of the circle, so a = v² / r, where v is the child's speed at the lowest point and r is the radius of the swing. Substituting the given values, we have F = m * (v² / r) = 342 N.

In summary, the maximum speed the truck can be moving without the crate sliding is 18.46 m/s, the child's speed at the lowest point of the swing is 4.77 m/s, and the force exerted by the seat on the child at the lowest point is 342 N (upward).

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The distance between the 7th and the tenth second is 29.4 m.

We know that we can have to formulate the information that has been given here so as to obtain a proper progression and this would help us to get the common difference of the progression that we are looking at.

Now we know that the progression would look something like; 4.9, 14.7, 24.5 ....

We can see that this is an arithmetic progression that has a common difference of 9.8.

U7 = a + (n - 1)d

a = first term

n = Number of terms

d = common difference

U7 = 4.9 + (7 - 1) 9.8

= 63.7

U10 = 4.9 + (10 - 1) 9.8

U10 = 93.1

Between the 7th and 10th seconds, we have;

93.1 - 63.7

= 29.4 m

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Answer:

Explanation:

Find the final velocity at which it struck the ground by using the kinetic energy formula.

\(KE=\frac{1}{2} mv^2\)

\(2000=\frac{1}{2} (15)v^2\\v=16.33\)

Now use kinematics to solve for the vertical displacement. We were given the initial velocity and acceleration can be assumed to be 9.8

\(V^2=V^2_i+2a(y_f-y_i)\\16.33^2=0^2+2(9.8)(y_f-y_i)\)

Δy = 13.6 meters

Answer:

Lol, yes

Explanation:

The field magnitude required to divert the beam away from the screen is 3.1588 × \(10^{-4}\).

A magnetic force is applied to a charged particle when it enters a magnetic field. This force's strength is determined by the particle's speed, magnetic field, and charge density. Fleming's Left Hand Rule determines the force's direction. The component of the velocity transverse to the magnetic field provides the required centripetal force if the charged object arrives at an angle.

V = 55.0 kV

d = 1.00cm

Tan∅ = ((1 ÷ 2) × 60) ÷ 6.0 = 5

∅ = 26.6°

Sin∅ = 1 ÷ R

R = 1 ÷ Sin(26.6°)

R = 1 ÷ 0.44

R = 2.27

Total work completed equals Kinectic Energy change

1 ÷ 2 mv² = qΔV

0.5 × 9.1 × \(10^{-31}\) × v² = 1.6 × \(10^{-19}\) × 55.0 × \(10^{3}\)

v² = (8.8 × \(10^{-15}\)) ÷ (4.55 × \(10^{-31}\))

v² = 1.93 × \(10^{16}\)

v = √1.93 × \(10^{16}\)

v = 138924439

v = 1.3 × \(10^8\)

The magnetic force produces the centripetal force.

qvB = mv² ÷ R

B = (mv ÷ qR)

B = (9.1 × \(10^{-31}\) × 1.3 × \(10^8\)) ÷ (1.6 × \(10^{-19}\) × 2.27)

B = (11.83 × \(10^{-23}\)) ÷ (3.745 × \(10^{-19}\))

B = 3.1588 × \(10^{-4}\)

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Answer:

a ceiling fan a ceiling fan

Answer:??????

Explanation:

Answer:

0.63 m/s

Explanation:

Given that,

Mass of a child = 39 kg

The mass of a boat =64 kg

The child throws a 4.8 kg package horizontally from the boat at a velocity of +13.7 m/s.

We need to find the velocity of the boat after the scenario. The momentum of the system will remain conserved. So,

+ ( + ) = 0

\(u=-\dfrac{ 4.8\times 13.7}{39+64}\\\\u=-0.63\ m/s\)

So, the velocity of the boat after this is 0.63 m/s.

The scientist who concluded that heat is produced by motion was James Prescott Joule, an English physicist and mathematician. In the 1840s, Joule conducted a series of experiments that led him to discover the relationship between heat and mechanical work, now known as Joule's First Law. This law states that the amount of heat produced by the mechanical work of a moving object is directly proportional to the work done.

Joule's experiments involved a variety of mechanisms, such as paddle wheels and weights, to generate heat through motion. One of his most famous experiments involved a falling weight that turned a paddle wheel in a container filled with water. Joule observed that the temperature of the water increased as the weight fell, which confirmed his hypothesis that the mechanical work done by the falling weight was converted into heat.

This groundbreaking discovery contributed to the development of the First Law of Thermodynamics, which states that energy cannot be created or destroyed, only converted from one form to another. Joule's work also laid the foundation for the modern concept of energy conservation and played a crucial role in the transition from the caloric theory of heat to the more accurate kinetic theory.

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Answer:

B. A large number of atoms move from one place to another

Explanation:

Convection is heat transfer by the movement of atoms of a substance from one region to another across a temperature gradient. Since atoms of solids are rigidly held in place, convection only occurs in liquids and gases since they flow.

Convection occurs when the temperature of one region of a fluid (liquid or gas) is higher than its other region. There is thus a mass movement of atoms from one region to the other due to a temperature difference. The atoms will continue to move to the region of lower temperature until the temperature of both regions are the same at an equilibrium temperature.

The surface area of the filament is not directly calculable with the given information. More data, such as the dimensions or shape of the filament, is required to determine its surface area.

The temperature and emissivity only provide information about the thermal radiation emitted by the filament, not its physical characteristics. To calculate the surface area of the filament, you would need to know its shape, dimensions, and/or surface characteristics. Without these details, it is not possible to determine the surface area using just the temperature and emissivity. To find the surface area of the filament, we need to consider the Stefan-Boltzmann law, which relates the power radiated by an object to its temperature and emissivity. The equation is P = σ * A * e * T^4, where P is the power (75 W in this case), σ is the Stefan-Boltzmann constant, A is the surface area, e is the emissivity (0.5), and T is the temperature in Kelvin (2,600 K). Rearranging the equation to solve for A, we have A = P / (σ * e * T^4). Plugging in the given values, we can calculate the surface area of the filament.

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Answer: