hai điện tích điểm bằng nhau có độ lớn 6.10^-8C đặt cách nhau một khoảng là r trong dầu hỏa có hằng số điện môi E=2,1. Lực tương tác tĩnh điện giữa chúng laf3,85.10^-4. tìm r

Answer:

Below

Explanation:

You can use this formula to find the time it will take the driver :

      finalvelocity = initialvelocity + acceleration (time)

Just plug in the values and rearrange :

     6.94 m/s = 0 m/s + 1.5m/s^2 (t)

     6.94 m/s = 1.5m/s^2 t

     4.6366 s = t

Therefore it takes the driver 4.6 seconds to accelerate to 25 km/h

Hope this helps! Best of luck <3

Answer:

i think its going to be 150 because its half of 300

Explanation:

Answer:

hope helps

Explanation:

In a weightless environment a force of 5 Newtons is applied horizontally to the right on a rock with a mass of 1 kg and to a pebble with a mass of 0.1 kg.

Answer: 2km/m/s/s

Explanation:

10km divided by 5m/s/s = 2km/m/s/s

Answer:

The Venusian atmosphere supports opaque clouds of sulfuric acid, making optical Earth-based and orbital observation of the surface impossible. Information about the topography has been obtained exclusively by radar imaging. Aside from carbon dioxide, the other main component is nitrogen

Explanation:

Because Venus has such a dense atmosphere which is some 100 times thicker than the earth's. Evidently, Venus is sufficiently close to the Sun that the little carbon dioxide it had in its early, Earth-like atmosphere caused the surface to warm up and leach out more carbon dioxide into the atmosphere.

Answer:

anything stationary

Explanation:

anything that is not moving outside the train like passing trees or the train's station is considered to be a frame reference.

Answer: What Northcliffe means is that news a=is all advertising and not caring about what they are actually saying is true or false so it can and will offend others so they want to suppress (end) the article.

Explanation:

Explanation:

.Flame retar,dant plastic additi,ves are compounds added to plastics and other materials to inhibit, suppress or de,lay combustion. These compounds are useful in impending burning in the ign,ition phase of fire. They do not prevent char,ring or melting nor do they increase the heat resistance of a material

Answer:

6m/s

Explanation:

V = frequency * wavelength

15 * 2.5 = 6m/s

The increase in the average kinetic energy of the ball causes the increase in the temperature of the ball.

Kinetic energy of a particle is directly proportional to its temperature.

A ball initially at rest acquires kinetic energy when an external force is applied to it. As the person strikes the ball with a bat, the ball gains momentum which increases its kinetic energy of the ball.

Temperature on the other hand, is the measure of the average kinetic energy of a particle. Consequently, as the kinetic energy of the ball increases, the temperature of the ball increases as well.

Thus, we can conclude that the increase in the average kinetic energy of the ball causes the increase in the temperature of the ball.

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Answer:

2.04m

Explanation:

PE=mgh

h= PE/mg

h= 40/2(9.82)

h=40/19.64

h=2.04

Answer:

\(20m\)

Explanation:

Formula to find the potential energy is,

Potential Energy = mgh

Here,

m = mass

g = gravitational field

h = height

According to the question, we have to find the height.

Usually, we get g is \(10ms^{-2}\)

Let us solve for the answer now.

\(P.E. =mgh\\40J =2kg*10ms^{-2} *h\\40 = 20h\\\frac{40}{20}= \frac{20h}{20} \\20m=h\)

Hope this helps you.

Let me know if you have any other questions :-)

The largest distance among the given choices is the distance to Alpha Centauri.  Option D is the correct answer.

Alpha Centauri is a star system located approximately 4.37 light-years away from Earth, making it the closest star system to our solar system. The distance from Mercury to Jupiter, the distance from the Earth to the Sun, and the distance to Sirius (the Dog Star) are all relatively smaller distances within our own solar system.

However, the distance to Alpha Centauri surpasses them all, extending over 4 light-years. Therefore, the correct answer is option D) the distance to Alpha Centauri.

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Final Answer:

a) Margaret's maximum distance from home is 100 miles.

b) Margaret's maximum speed is 60 miles per hour.

c) Margaret's maximum velocity is 60 miles per hour (assuming she traveled in a straight line).

d) Margaret's minimum speed is 20 miles per hour.

e) Margaret's minimum velocity is 20 miles per hour (assuming she traveled in a straight line).

f) The average speed for the entire journey is 40 miles per hour.

g) The average velocity for the entire journey is 0 miles per hour (assuming she returned home, indicating no overall displacement).

Explantion:

Margaret's maximum distance from home is 100 miles because that's the farthest she traveled from her starting point during her journey. Her maximum speed is 60 miles per hour, indicating the highest rate at which she was moving at any point during her trip. Maximum velocity is also 60 miles per hour, assuming she traveled in a straight line during this period.

Her minimum speed is 20 miles per hour, which represents the slowest speed she maintained during the journey. Similarly, her minimum velocity is 20 miles per hour, assuming she was moving in a straight line during this time.

The average speed for the entire journey is calculated by dividing the total distance traveled (100 miles) by the total time taken. In this case, it's 40 miles per hour.

The average velocity, however, is 0 miles per hour. This is because velocity takes into account both the magnitude and direction of motion, and since Margaret returned home, her overall displacement is zero, resulting in an average velocity of 0 miles per hour.

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Answer: yes it can but not enough to stay hydrated and keep your body going but you cant get water from milk lol

Explanation: hope this helpes

Answer:

Yes This would be True hope this helps

Explanation:

Answer:

2. Mathew Maury

Explanation:

2. Mathew Maury

4. Cousteau and Gagnon

Explanation:

they made the first successful scuba in 1942

Answer:

2000 to 2010

Explanation:

sorry I'm just guessing

Answer:

2000 - 2010

Explanation:

edg 2022

Option B: The pressure in the neck is equal to the pressure in the knee because of the equal dynamic pressure according to the continuity equation is the answer.

Assuming that the human circulatory system obeys Bernoulli's principle of hydrodynamics, the most accurate comparison of blood pressure in capillaries in the neck and those of equal cross-sectional area in the right knee yields: The neck pressure equals the knee pressure with the same dynamic pressure according to the continuity equation. The Bernoulli equation describes the flow of an incompressible fluid in a pipe and how that flow is affected by changes in pressure. 

In this case, it can be applied to the flow of blood through capillaries in the neck and right knee. The continuity equation, which states that the volume flow rate of fluid through a tube must remain constant, regardless of changes in the tube's cross-sectional area or shape, can also be applied in this case. Because the two capillaries have the same cross-sectional area, the dynamic pressure in both capillaries must be the same because of the continuity equation. This indicates that the pressure in the neck is equal to the pressure in the knee.

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I agree with the application of such offenses where criminal responsibility is imposed on strict liability offenses because it is needed to protect public welfare, promote safety, and deter potential harm.

Strict liability offenses are those in which liability is imposed without requiring proof of intent or guilty mind. These offenses focus on the act itself rather than the mental state of the offender. The rationale behind strict liability offenses is often rooted in the need to protect public welfare, promote safety, and deter potential harm.

An argument in favor of strict liability offenses is that they ensure accountability for certain actions that pose a significant risk to society, even in the absence of intent or mens rea. By placing the burden on individuals to adhere to certain standards or regulations, strict liability offenses can help prevent accidents, protect public health, and maintain order.

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Answer:

Sexually transmitted diseases are spread by direct contact with bodily fluids.

Explanation:

if you have a disease you can give it to someone by having sex because your fluids go into or either combine

Answer:

B

Explanation:

Answer:

A rotating fan completes 1200 revolutions every minute. Consider the tip of a blade, at a radius of 0.15 m.

Explanation:

The tangential velocity at the point, 0.16 m from the axis is 13.44 m/s.

We have the following information;

Angular speed of the blade = 800rev/min

Radius of the point under consideration = 0.16m

We have to convert the angular velocity to units of rad/s

Given that;

1 rev/min = 0.105 rad/s

800rev/min = 800rev/min × 0.105 rad/s/1 rev/min

= 84 rad/s

Now;

v = rω

v = Tangential velocity

r = radius

ω = angular velocity

v =  0.16m × 84 rad/s

v = 13.44 m/s

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Hello!

a) What is the change in momentum?

The change of the momentum is the velocity, because the velocity is reduced to zero.

We can calculate the aceleration, applicating the formula:

\(\boxed{a=\frac{V-Vi}{t} }\)

Like you see, the final velocity will be zero, so:

\(a = \dfrac{0m/s-40m/s}{4s}\)

\(a = \dfrac{-40m/s}{4s}\)

\(a = -10\ m/s^{2}\)

Like you see, the aceleration applicate by superman is of -10 m/s^2.

If the aceleration is negattive, means the velocity will decrease.

b.) What is the magnitud of the force wich superman exerts on the train?

For calculate the force applicate for superman, lets applicate the second law of Newton:

\(\boxed{F=ma}\)

Lets replace and resolve it:

F = 8x10^3 kg * (-10 m/s^2)

F = 8000 kg * (-10 m/s^2)

F = -80 000 N

The force applicated is of -80000 Newtons.

When the force is negative means the force applicated in the another direction of the object what is traveling.

Detonation of a fusion type hydrogen bomb is started by igniting a small fission bomb.

This creates a high temperature and pressure environment that triggers the fusion reaction of hydrogen isotopes.

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Answer: A.

Explanation:

Solar eclipse happens when Sun casts a shadow directly on Earth and the Moon. Option A is correct.

A solar eclipse occurs when the Sun throws a shadow directly on Earth and the Moon.

When the Sun throws a shadow directly on the Earth and the Moon, it is called a solar eclipse.

Hence,option A is correct.

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Answer:

hey!!

Newton's second law of motion, also known as the law of acceleration, explains the relationship between an object's mass, the applied force, and its resulting acceleration. The law states that the acceleration of an object is directly proportional to the net force acting on it and inversely proportional to its mass. Mathematically, Newton's second law can be expressed as:

F = ma

Where:

F represents the net force acting on the object,

m represents the mass of the object, and

a represents the acceleration produced by the force.

In simpler terms, Newton's second law states that the force acting on an object determines how much it accelerates. A larger force applied to an object will result in a greater acceleration, while a smaller force will produce a smaller acceleration. Additionally, if the mass of the object is increased, the same force will produce a smaller acceleration, and vice versa.

This fundamental law of motion helps us understand how forces and masses interact to produce motion. It is widely applicable and plays a crucial role in fields such as physics, engineering, and everyday life when studying the behaviour of objects in motion.

i hope this helps you :)

The see saw would move in the direction of the girl.

We know that the moment can be obtained as the product of the mass and the distance that have been covered. According to the principle of the moments. We know that the sum of the clockwise moments is equal to the sum of the anti clockwise moments.

In the case of see saw that we have here, we can see that it is moving towards the position of the girl and that would be the direction of the weight as shown in the figure that have been shown above.

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Explanation:

By keeping the galaxies safe and not launching stuff into space hurting planets and other universes out there in the entire galaxy

Using a cable with a tension of 1350 N , a tow truck pulls a car 5.00 km alone a horizontal roadway. Therefore,

(a) Cable work: 6,750,000 J horizontally.

(b) Cable work: 6,308,250 J at 35.0° above horizontal.

(c) No work by gravity.

To calculate the work done by the cable in each scenario, we need to consider the angle between the direction of the force applied and the displacement.

(a) If the cable pulls horizontally (0° above the horizontal):

In this case, the angle between the force and the displacement is 0 degrees, so the work done can be calculated as:

Work = Force * Displacement * cos(Ф)

Work = 1350 N * 5000 m * cos(0°)

Work = 1350 N * 5000 m * 1

Work = 6,750,000 J

The cable does 6,750,000 Joules of work on the car when it pulls horizontally.

(b) If the cable pulls at 35.0 degrees above the horizontal:

In this case, the angle between the force and the displacement is 35.0 degrees, so the work done can be calculated as:

Work = Force * Displacement * cos(Ф)

Work = 1350 N * 5000 m * cos(35.0°)

Work = 1350 N * 5000 m * 0.819

Work = 6,308,250 J

The cable does approximately 6,308,250 Joules of work on the car when it pulls at 35.0 degrees above the horizontal.

(c) The work done by gravity on the car is zero because gravity acts vertically downward, perpendicular to the displacement along the horizontal roadway. Therefore, the gravitational force does not contribute to the work done on the car in this scenario.

In both cases (a) and (b), the cable does the same amount of work on the tow truck as on the car since they are connected by the cable. So the work done by the cable on the tow truck would be equal to the values calculated above: 6,750,000 J in case (a) and 6,308,250 J in case (b).

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The light radiated from the Sun's surface reaches Earth in about 8 minutes, but the energy of that light was released by fusion in the solar core about millions of years ago

Nuclear fusion is a process in which atomic nuclei of low atomic numbers combine to form a heavier nucleus under circumstances of enormous pressure and temperature. The hydrogen bomb is one illustration of this nuclear process in action.The light that is radiated from the sun's surface takes about 8 minutes to reach Earth. However, the energy that is carried by the light was actually produced millions of years ago in the sun's core.

The energy comes from the fusion reactions that take place in the sun's core as a result of the intense heat and pressure. During this process, the sun combines hydrogen nuclei to create helium nuclei while releasing an enormous amount of energy in the form of light and heat.In summary, the main answer is that the energy of light radiated from the Sun's surface was released by fusion in the solar core millions of years ago.

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Explanation:

Collide is your answer

have a good day.