A police car is asked to overtake a red sedan that is 16 km ahead of it on the freeway. The red sedan is traveling at 80 km/hr and the police car travels at 100 km/hr. When will the police car overtake the sedan?

Answer:

An atom of fluorine has the atomic number 9, and its mass number is 19 amu. Which of the following shows a neutral atom of fluorine? 16 protons and 14 electrons.

Explanation:

ITs 16 protins and 14 ELECTRONS

Answer:

Answer is 9 Protons, 10 Neutrons, and 9 Electrons

Explanation:

A.P.E.X

Bonnie is an example of a volunteer who is offering her time and skills to help make floral arrangements at a flower shop. This act of volunteering demonstrates her willingness to give back to her community and support local businesses.

By offering her assistance, Bonnie is helping the flower shop to create beautiful and unique arrangements that will enhance the beauty and appeal of their products.

Additionally, her contribution of time and energy helps to ease the workload of the shop's staff and ensure that they are able to meet the demands of their customers.

Overall, Bonnie's decision to volunteer is a positive example of how individuals can make a difference in their communities by offering their time and talents to support local businesses and organizations.

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Answer:

B

Explanation:

One positive charger and one negative charger

Kirk's use of math skills in organizing, analyzing, and presenting data is essential for the success and integrity of his scientific investigation.

The correct answer is option B.

Kirk is using his math skills to organize and present his data (Option B). Math skills are integral to the scientific investigation process, particularly when it comes to data analysis, interpretation, and visualization. Here's an explanation of how Kirk is using math skills in his investigation:

1. Organizing Data: Kirk likely collects raw data during his investigation, such as measurements, observations, or experimental results. To make sense of this data, he needs to organize it systematically. This involves using math skills to categorize, sort, and arrange the data in a structured manner, such as in tables or spreadsheets.

2. Analyzing Data: Once Kirk has organized his data, he needs to analyze it to draw meaningful conclusions. This often involves applying various mathematical techniques, such as calculating averages, percentages, standard deviations, or performing statistical analyses. These calculations help identify patterns, trends, and relationships within the data, enabling Kirk to make informed interpretations.

3. Presenting Data: Kirk uses his math skills to visually represent his data through graphs, charts, or diagrams. By selecting appropriate types of graphs (e.g., bar graphs, line graphs, scatter plots), he can effectively communicate the relationships and trends observed in the data to others. Additionally, he may employ mathematical principles, such as scaling the axes, determining appropriate intervals, and using labeling or legends, to ensure accurate and clear representation.

4. Drawing Conclusions: Kirk's mathematical skills are crucial in drawing conclusions from his data. He may use mathematical models, equations, or formulas to analyze the data and test hypotheses. By applying mathematical reasoning, Kirk can determine if his data supports or contradicts his initial hypotheses or research questions.

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Answer:

Distance = 56km Displacement = 30km

Explanation:

hope I helped

Explanation:

I am going to sign off....here is a possible scenario:

    Current thru 3 ohm = 1.05 Amp V3 = 3.15 V   Current through 4 ohm  = .58 A      through 5 ohm = .464 A    (voltage across these two resistors is 2.32 v )

Explanation:

a) Velocity and acceleration of a car are parallel when the car is moving along a straight line in the same direction. For example, when a car is gaining speed as it moves forward in a straight line, both velocity and acceleration are directed in the same direction.

b) Velocity and acceleration of a car are anti-parallel when the car is moving along a straight line in the opposite direction. For example, when a car slows down while moving in a straight line, its acceleration is directed opposite to the direction of its velocity, or the other way around.

Answer:

a)

There is only one case where velocity and acceleration are parallel only when they are moving in the same direction.

b)

There are 3 cases where velocity and acceleration are antiparallel.

(i) When both are moving in different direction

   It means :

(ii) When the object is slowing down, where velocity and acceleration are in the opposite direction.

(iii) In case of motion reversal.

Explanation:

Answer:

Become leaders, represented.

Explanation:

bc

a. Hydrogen fusion primarily occurs at the center of stars due to high pressure and temperature. b; the star is no longer collapsing once fusion ignites due to radiation pressure. c;  The energy is produced through the conversion of a small fraction of the mass of the hydrogen nuclei into energy. d; 4H → He + energy

A. The high pressure and temperature at the core create an environment where hydrogen nuclei (protons) can overcome their electrostatic repulsion and come close enough for the strong nuclear force to bind them together through a process called nuclear fusion.

b. Once fusion ignites in the star's core, the release of energy counteracts the force of gravity that is trying to collapse the star. Fusion reactions, particularly those involving hydrogen, generate an enormous amount of energy in the form of radiation and high-energy particles. This energy exerts an outward pressure known as radiation pressure, which pushes against the gravitational force, achieving a stable balance and preventing further collapse.

c. The process of hydrogen fusion converts mass into energy through Einstein's famous equation, E=mc². In this process, four hydrogen nuclei (protons) fuse together to form a helium nucleus, releasing a tremendous amount of energy.

d. The reaction equation for hydrogen fusion, specifically the fusion of four hydrogen nuclei to form a helium nucleus, is commonly represented as:

4H → He + energy

This equation symbolizes the fusion of four hydrogen atoms (H) to produce one helium atom (He) and a significant amount of energy in the form of gamma-ray photons.

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Answer:

B) is the answer

Explanation:

A) is 25 N

B) is 36N

C) is 30N

D)15N

Answer:

Ethanol C2H5OH or propane C3H8 have more energy

Explanation:

Answer:

No

Explanation:

Your answer will be no because Mars has less gravity then Earth does but you would still have the same amount of mass therefor If someone goes to Mars and goes back to Earth they would not weigh the same as they did on earth.Hope it helps you!

Answer:

1. Aristotle

2. Thales of Miletus

Explanation:

1. Answer: The first professor who implemented a scientific approach in order to investigate a problem was Aristotle(384-322 BC)

Aristotle was a student under Plato, he pioneered the scientific method in ancient Greece.

2. Answer: The father of scientific mythology was

Thales of Miletus  (c. 624/623-c. 548/545 BC)

Thales was a Greek mathematician, astronomer, and pre-socratic philosopher, Asia minor.

Answer:

because these units are derived from combinations of two or more of the seven base units

The velocity of the train after 30 seconds is calculated as  30.5 m/s.

Velocity is vector quantity that explains the rate at which any object changes the position.

Initial velocity = 20 km/hr = (20 km/hr) x (1000 m/km) / (3600 s/hr) = 5.56 m/s

Acceleration = 3.0 km/hr/s = (3.0 km/hr/s) x (1000 m/km) / (3600 s/hr) = 0.83 m/s²

As v = u + at

v is final velocity, u is initial velocity, a is acceleration , t is time

v = 5.56 m/s + (0.83 m/s²) x 30 s

v = 5.56 m/s + 24.9 m/s

v = 30.5 m/s

Therefore, the velocity of the train after 30 seconds is 30.5 m/s.

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Answer:

In earlier washing machine, the electrical energy is converted in rotational kinetic energy. Now a days, in washing machine, the electrical energy is converted in kinetic energy then the mechanical energy is converted into heat energy. In modern machines, we can wash and dry the clothes.

Answer: Δx = vxt = (85 m/s)(9s) = ? m

Explanation:

If the plane is in level flight,

Δx = vxt = (85 m/s)(9s) = ? m

Note that if Δx ≠ 0, it will not land on the car.

The values for the horizontal displacement and repositioning of the car are;

As it falls, the backpack will have a maximum horizontal displacement (away from the car) of 795 meters

The car should remain in its current position; Do not move the car

The reason the above values are correct is as follows;

The known information about the airplane, the backpack and the car are;

The speed of the airplane = 85 m/s

The time it takes the backpack to fall to the ground, t = 9 seconds

The position of the airplane when the backpack is dropped = Directly over the brand new car

Required:

Solution to the first question:

The horizontal displacement of the backpack = Horizontal velocity × Time, t

According to Newton's First Law of motion, the velocity of the backpack at the point it was dropped is the same as the velocity of the airplane

Given that the velocity of the airplane given is the horizontal velocity, we have;

The horizontal velocity of the backpack = 85 m/s

The displacement of the backpack = 85 m/s × 9 s = 795 m

Solution to the second question:

Given that the backpack will land 795 meters in front, away from the car, the car is safe if it remains in its current position

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To determine the power consumption of the circuit at a time 3 2 τ after s has been switched to position b, we need to first understand the circuit diagram. The circuit consists of a capacitor, two resistors, a voltage source, and a switch.

When the switch is in position a, the capacitor charges up to the voltage of the source, which is 12 volts. When the switch is switched to position b, the capacitor starts discharging through the resistors. The time constant of the circuit is given by the formula τ = R1*C, where R1 is the resistance of resistor 1 and C is the capacitance of the capacitor.

In this circuit, the time constant is 8 microseconds. So, at a time 3 2 τ (12 microseconds) after the switch has been moved to position b, the capacitor has discharged by approximately 95% of its initial charge. The voltage across the capacitor is given by the formula Vc = Vo*e^(-t/τ), where Vo is the initial voltage across the capacitor and t is the time since the switch has been moved to position b.

Substituting the values, we get Vc = 12*e^(-1.5) = 5.05 volts. The current flowing through the resistors is given by the formula I = V/R, where V is the voltage across the resistors and R is the resistance of the resistors. Substituting the values, we get I = 5.05/(4+15) = 0.28 amps.

The power consumption of the circuit is given by the formula P = V*I, where V is the voltage across the circuit and I is the current flowing through the circuit. Substituting the values, we get P = 5.05*0.28 = 1.41 watts. Therefore, the power consumption of the circuit at a time 3 2 τ after the switch has been moved to position b is 1.41 watts.

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Answer:

d

Explanation:

Answer:

Earth absorbs heat from the sun.

Explanation:

This radiation is absorbed by greenhouse gases which then radiate energy into all directions including downwards and thereby trapping heat in the atmosphere.

Hope you have a good day :)

Answer:

^ correct

Explanation:

Option A on edge 2020

Answer:

I=102=5A. I=2040=0.5A

Explanation:

hope this helps

The reading of the scale will increase.

Our fingers push away the water in the cup which requires a lot of force. The scale should apply the same force to your finger. This force increases the reading on the scale. The scale display will rise. When a finger is submerged, the water exerts an upward buoyant force on the finger.

According to Newton's third law fingers exert equal and opposite forces on water. The spring scale reading decreases until the object is completely submerged. The reading, therefore, shows the apparent weight of the stone, which is less than its actual weight. Heavy metals are denser than water and will sink in water, so putting heavy metals in water will change the reading on the spring scale.

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Answer:

Here

Explanation:

The rate at which an object transfers energy by heating depends on: the surface area, volume and material of the object and the nature of the surface with which the object is in contact. The bigger the temperature difference between a body and its surroundings, the faster the rate at which heat is transferred.

Hope this help :)

The foundation pressure at the bottom of the dam is 470,400 Pascals or 470.4 kPa

To determine the foundation pressure at the bottom of the dam, we can use the concept of hydrostatic pressure. Hydrostatic pressure is given by the formula:

Pressure = Density x Gravity x Height

First, let's calculate the density of water using the specific gravity of concrete. The specific gravity is the ratio of the density of a substance to the density of water.

Specific gravity of concrete = Density of concrete / Density of water

2.4 = Density of concrete / 1000 kg/\(m^3\) (density of water)

Density of concrete = 2.4 x 1000 kg/\(m^3\)= 2400 kg/\(m^3\)

Next, let's calculate the height of water acting on the vertical sides of the dam. The height is given as 20m.

Now, we can calculate the foundation pressure at the bottom of the dam using the formula for hydrostatic pressure.

Pressure = Density x Gravity x Height

       = 2400 kg/m^3 x 9.8 m/s^2 x 20m

       = 470,400 Pa (Pascals)

So, the foundation pressure at the bottom of the dam is 470,400 Pascals or 470.4 kPa.

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Answer:If the object on the incline is not moving, the force of static friction will be mg•sin(theta)

Explanation:

A neutron star is made almost entirely of neutrons, relatively large particles that have no electrical charge.

A neutron star is made almost entirely of neutrons, relatively large particles that have no electrical charge. Neutron stars are incredibly dense celestial objects that form when massive stars undergo a supernova explosion. During this explosion, the outer layers of the star are ejected into space, leaving behind a dense core composed primarily of neutrons.

Neutrons are subatomic particles that, along with protons, make up the nucleus of an atom. In most atoms, neutrons and protons are bound together by the strong nuclear force. However, in a neutron star, the intense gravitational pressure is so strong that it overcomes the repulsive electromagnetic force between protons, causing the protons to merge with electrons through a process called electron capture. As a result, most of the protons in a neutron star are also converted into neutrons.

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False. When monochromatic light passes through two narrowly spaced slits, there will not always be a region of constructive interference on the viewing screen directly between the slits.

The phenomenon of interference occurs when waves from different sources or different parts of the same wavefront superpose and interfere with each other. In the case of two slits, when monochromatic light passes through them, it creates an interference pattern on a viewing screen placed behind the slits.

In an interference pattern, there are alternating bright and dark fringes. The bright fringes occur due to constructive interference, where the peaks of the waves from each slit align, resulting in an increased intensity of light. The dark fringes, on the other hand, occur due to destructive interference, where the peaks of one wave align with the troughs of another wave, resulting in a cancellation of light.

Between the two slits, there is a central bright fringe known as the central maximum. However, it is important to note that not all regions between the slits exhibit constructive interference.

The interference pattern depends on factors such as the distance between the slits, the wavelength of the light, and the angle of observation. In some cases, there may be dark fringes or regions of destructive interference between the slits on the viewing screen.

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Work = Force x Distance x cos(theta)

where theta is the angle between the direction of the force and the direction of the displacement.

Assuming the force is applied in the same direction as the displacement (i.e. theta = 0), we can simplify the formula to:

Work = Force x Distance

Plugging in the given values, we get:

Work = 190 N x 2.0 m

Work = 380 Joules (J)

Therefore, the work done in this situation is 380 Joules (J).

But if there is an angle theta(different than 0) you should use the first formula.

Answer:

A

Explanation:

Answer:

According to Pascals law, THE PRESSURE EXERTED TO A CONFINED LIQUID IS TRANSMITTED EQUALLY AND UNDIMINISHED IN ALL DIRECTIONS THROUGHOUT THE MASS OF THE LIQUID--Blaise Pascal

so the pressure at A2 must be equal to A1

buy however the F1 will be less than F2 since:

P1=F1/A1 and P2=F2/F1

P1=P2 according to Pascal

so, F1/A1=F2/A2

with less amount of force at P1 THE force gets multiplied.

Therefore it's obvious that option A and B is wrong. I can't see option C properly.

but, you are going to have this option.

C.F1>F2

so the option with F1>F2 is correct

PLEASE MARK BRAINLIEST