What is the electrical force between q1 and q2? Recall that k = 8. 99 × 109 N•meters squared over Coulombs squared. 4. 3 × 1010 N 3. 5 × 1010 N –5. 4 × 1010 N –5. 8 × 1010 N.

The work required to raise the pinnacle 12 meters of the chain to the top of the building is 13,139.6 Joules.

weight = mass x acceleration due to gravity

weight = 22 kg x 9.8 m/s² = 215.6 N

for this reason, the work required to raise the pinnacle 12 meters of the chain is:

work = force x distance = weight x distance = (215.6 N) x (61 m) = 13,139.6 J

Work is defined as the product of the force acting on an object and the displacement of the object in the direction of the force. Work is a scalar quantity, meaning it has magnitude but no direction.  Work is an important concept in many areas of physics, including mechanics, thermodynamics, and electromagnetism.

In mechanics, work is used to describe the energy required to move an object or to change its velocity. In thermodynamics, work is used to describe the energy required to change the state of a system. In electromagnetism, work is used to describe the energy required to move a charged particle in an electric field or to change the magnetic field in a given region. Work is a fundamental concept in physics and is essential for understanding the behavior of many physical systems.

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Static Friction is the force that holds the object in the place.

Static friction is the type of friction which acts on body and keep them at rest. Static friction opposes the relative motion  and keep the object in a place. It acts tangentially to the surface.The friction forces are of two types, kinetic and static. Static keeps the object at rest and kinetic allows the object to move. Friction plays a major role in our day to day life, we can walk properly without sleeping because of friction only. Due to friction we can slide heavy objects easily on the floor. There are liquids and surfaces which increase or decrease friction according to our needs and are used by factories and companies to make their work easy. To know more about friction visit

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Answer:

1,1 m

Explanation:

Dado que;

coeficiente de fricción = 0,6

sabemos que W = R = mgcos 37 = 3.5Kg * 10m / s ^ 2 * cos37 = 27.95 N

coeficiente de fricción = fuerza / reacción normal (R)

Fuerza = 0.6 * 27.95 N

Fuerza (F) = 16.77 N

Recuerda que F = Ke

dónde;

K = constante de fuerza (15N / m)

e = extensión (lo desconocido)

e = F / K

e = 16,77 N / 15 N / m

e = 1,1 m

Electric field and magnetic field has both the attractive and repulsive character.

Electric field is defined as the region surrounding a charged particle, in which it experiences an electric force.

Here,

Electric field and magnetic field has both the attractive and repulsive character.

Both electric and magnetic fields obey the inverse square law.

Stationary charges produce electric field, whereas moving charges produce magnetic field.

Electric field is associated with two kind of charges, positive and negative, whereas magnetic field is associated with two magnetic poles, north and south.

Both electric field and magnetic field are associated with principle of superposition.

Hence,

Electric field and magnetic field has both the attractive and repulsive character.

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Answer:

Below

Explanation:

Find unit rates ( km / hr) for each to compare

A :  600 km / 3 hr =  200 km/hr

B :  500 / 4 =      125 km hr

A flies 75 km/hr faster than B

Explanation:

(≚ᄌ≚)ℒℴѵℯ❤

Answer:

1:a

2:c

3:f

4:d

5:f or e

6:d

Explanation:

Hope it helps! also if im wrong sorry. but i already learned this so yeah have a nice day!

Answer:

7500 Newtons

Explanation:

Mass of the sportscar= 1500 kg

Acceleration of the sportscar= 5m/s^2

Hence, let the Force acting on it be F

\(We\ know\ that,\\Force=Mass*Acceleration\\F=ma\\\\Here,\\F=1500*5\\=7500 kg m/s^2\ or\ 7500\ Newtons\)

Out of all the planets, Jupiter has the most mass. Of all the planets, Jupiter has the strongest magnetic field. Of all the planets, Jupiter rotates the most quickly.

With a rotational velocity of 28,273 miles per hour (or 43,000 kilometers per hour), Jupiter's equator rotates a little more quickly than its polar regions. Jupiter's day ranges from 9 hours, 56 minutes near the poles to 9 hours, 50 minutes towards the equator. As the largest planet, Jupiter has the gravitational ability to draw in the most mass as it travels through space, making it the planet with the quickest rotation. Jupiter acquires the angular momentum of whatever mass it comes into contact with, including gas, dust, and rock, in addition to the mass itself. One rotation of Jupiter, for instance, takes 9 hours and 55 minutes, although it rotates at a speed that is 27 times quicker than Earth's at its equator.

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Answer:

waterproof and transmits light.

Answer:

waterproof and transmits light.

Explanation:

Answer:

'brightness' and 'place' (?)

Explanation:

You can tell the distance in both simple and complicated ways; for instance, some methods like using luminosity don't work for all stars*

quote for better understanding:

"Farther methods are usually based on identifying what type of star a given star is, and estimating its luminosity .."

"..We then measure its apparent brightness (how bright it looks)* and do some math to figure out how far away it is."

(more detailed quote):

"By knowing the actual brightness and comparing it to the apparent brightness seen from Earth (that is, by looking at how dim the star has become once its light reaches Earth), they can determine the distance to the star."

Alternatively by observing the position of the star or its place a similar technique is used:

quote:

"Earth orbits the Sun, so it is in a slightly different position in January than in July. Nearby stars will seem to slightly shift in position in our sky relative to far-away stars."

In conclusion-- luminosity is commonly how astronomers know that stars are not all the same distance away from us.

Answer:

twice

just know it

Answer:He is placed in a centrifuge (r = 20.0 m) and spun at a constant angular velocity of 15.0 rpm ... He is then slowed and brought to a stop in 2.0 minutes. a.

Explanation:Gravity is the force that pulls an object towards the center of the earth. The value of the acceleration due to the gravity on earth is 9.8 m/s2. g = GM/r2 is the equation used to calculate acceleration due to gravity.

Answer:

Since gravitational force is inversely proportional to the square of the separation distance between the two interacting objects, more separation distance will result in weaker gravitational forces. So as two objects are separated from each other, the force of gravitational attraction between them also decreases.

When dealing with the force of gravity between two objects, there are only two things that are important – mass, and distance. The force of gravity depends directly upon the masses of the two objects, and inversely on the square of the distance between them.

Explanation:

I could be wrong but I would say B :)

Have a good day!

answer:

i believe the answer is d

explanation:

here's why;

c. is incorrect because everything has a gravitational force.

a. is also incorrect because gravity is what holds the tennis ball down and keeps it on the ground.

i don't really know how to explain why b. is wrong, but d. is the correct answer because the force of friction opposes the motion of an object, causing moving objects to lose energy and slow down.

good luck :)

i hope this helps

**please let me know if this was incorrect**

have a great day !!

The speed of the private jet and the commercial jet were 200mph and 400mph respectively.

The private jet flies the same distance in 10 hour that the commercial jet cover in 6 hours.

The speed of the commercial jet is 200mph less than 3 time of the speed of private jet.

Now, if we assume the speed of Private jet to be X mph then the speed of the commercial jet will be (3X - 200) mph.

If the distance cover is D, then, for the private jet,

D = 10X

For commercial jet,

D = (3X-200)6

Now, we can write,

10X = 18X - 1200

6X = 1200

X = 200 mph.

So, the speed of the private jet was 200mph and the speed of the commercial jet was 400mph.

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When two waves with equal and opposite amplitude interfere, the resulting amplitude will be zero.

This is known as destructive interference. When two waves with equal amplitude but opposite phase (i.e., one wave is at its peak while the other is at its trough) meet at the same point in space, their individual amplitudes will cancel each other out, resulting in a total amplitude of zero. This can occur when waves are perfectly out of phase with each other, meaning that the crest of one wave meets the trough of the other wave. In this scenario, the amplitude of the resulting wave will be the difference between the amplitudes of the two original waves. However, when the waves have equal and opposite amplitudes, they will completely cancel each other out and the resulting amplitude will be zero. This is an important concept in wave theory and has practical applications in fields such as acoustics and optics.

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Kinetic energy is the power an object has because of its motion.

Kinetic energy - increases with velocity, the energy of motion

Potential energy - increases with height

Both - stored energy, increase with mass

If we want to boost up an object, then we must follow a force. making use of force requires us to do paintings. After work has been accomplished, energy has been transferred to the object, and the object might be moving with a new consistent speed.

The kinetic energy of an item is the electricity that it possesses because of its motion. it is defined because the work needed to boost up a frame of a given mass from relaxation to its stated pace. Having gained this energy for the duration of its acceleration, the frame maintains this kinetic electricity except for its pace changes

Potential energy saved energy that relies upon the relative position of numerous components of a gadget. A spring has greater potential energy when it is compressed or stretched. A steel ball has extra capability strength raised above the ground than it has after falling to Earth.

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Answer: Rotational motion

Explanation: The two types of motion of the rolling ball are translational motion and rotational motion. The center of mass of the ball undergoes translational motion whereas the ball undergoes rotational motion in the center of mass frame.

Answer:

Harmful bacteria are called pathogenic

Explanation:

Harmful bacteria are called pathogenic bacteria because they cause disease and illnesses like strep throat, staph infections, cholera, tuberculosis, and food poisoning.

In a uniformly assessing accelerating motion, the velocity of this specific object follows the law:

v(t) = v₀ + at

where v₀ is the initial velocity, followed by an acceleration and t stands for time.

In the given question statement, the robot starts from rest such that the initial speech achieved is zero where,

vi = 0

Now, the robot undergoes a free fall such that the acceleration is assumed as the gravitational acceleration given the,

g= 9.81m/s².

Therefore, along with the time t = 3.5s and the velocity is,

v(3.5) = 0 + (9.81m/s²) (3.5s) = 34.4m/s

Hence, the speech after it has fallen accounts for 34.3 m/s

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Answer:

Number of Significant Figures: 2

The Significant Figures are 3 6

Explanation:

= 3.60 × 102

(scientific notation)

= 3.60e2

(scientific e notation)

= 360 × 100

(engineering notation)

(one)

= 360

(real number)

the water has more thermal energy - this is a key concept of thermodynamics

Answer:14.8

Explanation:

Trust me

The distance will be = 14.85 m

A region around a charged particle or object within which a force would be exerted on other charged particles or objects.

given :

Charge (q)= 2.45*\(10^{-6}\) C

Electric field (EF) =  100 N/C

to find = ? distance (r)

Electric field = 1/4π∈o * (q/\(r^{2}\))

         100      = 9 * \(10^{9}\) *  ( 2.45*\(10^{-6}\) / \(r^{2}\))

          \(r^{2}\) = 220.5

          r= \(\sqrt{220.5}\)

          r = 14.85 m

The distance will be = 14.85 m

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Answer:

3 every second

Explanation:

There are 7 atoms of bromine (br) are present in this molecule, 4pbr₃.4pbr3 is divided into 4 pb atoms and 7 bromine atoms.

The atom consists of matter that may be split without releasing electrical charges.

It's also the smallest unit of matter with chemical element features. As a result, the atom is the fundamental unit of science.

In the nucleus, proton and the neutron is existing. The condition of the atom to be electrically neutral is that the number of the proton and electron should be the same.

4pbr₃, consists 4 atoms of pb and 7 atoms of bromine.

Hence.there are 7 atoms of bromine (br) are present in this molecule, 4pbr₃.

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Answer: 4 seconds are elapsed before the cannonball strikes the ground.

Explanation:

Height of tower (h) = 80m

Initital velocity in x-dir (\(u_{x}\)) = 337m/s

Initial velocity in y-dir (\(u_{y}\)) = 0m/s

Time of flight (T)

Gravitational acceleration (g) = 10 m/s

Using second equation of motion,

h = \(u_{y}\) + \(\frac{1}{2}\)g\(t^{2}\)

80 = \(\frac{1}{2}\)×10×\(T^{2}\)

\(T^{2}\) = 16

T = 4s

If it is critical to measure the wavelengths precisely for a given lamp, the grating with the highest number of lines per centimeter (lines/cm) should be used. In this case, the grating with 800 lines/cm would be the most suitable option.

Gratings are optical devices with a periodic pattern of equally spaced lines or grooves. They are commonly used in spectroscopy to disperse light into its component wavelengths. The number of lines per centimeter on a grating determines its resolution or ability to separate closely spaced wavelengths.

Higher line densities (more lines/cm) provide finer resolution and allow for more precise measurement of wavelengths. With a grating having 800 lines/cm, it would offer a higher resolution compared to the gratings with 400 lines/cm or 100 lines/cm. This means it would enable more accurate determination of the specific wavelengths present in the lamp's emission spectrum.

By using the grating with the highest line density, finer details in the lamp's spectrum can be resolved, resulting in more precise measurements of the wavelengths.

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Fuses are electrical safety devices that protect electrical circuits from overloading or short-circuiting.

They work by interrupting the flow of electrical current when it exceeds a safe level, which prevents damage to the circuit and the connected devices.

Fuses contain a metal wire or filament that melts when the current becomes too high, breaking the circuit and stopping the flow of electricity. This protects the circuit from damage and prevents fires or other hazards.

Fuses are necessary because they provide a crucial layer of protection for electrical systems, ensuring that they operate safely and reliably. Without fuses, electrical circuits could overload or short-circuit, leading to costly and dangerous damage.

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Answer:

C. 157 bar/2270 psi

Explanation:

Calculation to determine what we should head back when either of our SPGs read

SPGs=200 bar -[200 bar-(50 bar + 20 bar)]÷1/3]

SPGs=200 bar-[(200 bar-70 bar)÷1/3]

SPGs=200 bar-(130 bar÷1/3)

SPGs=200 bar-43 bar

SPGs=157 bar/2270 psi

Therefore based on the above calculation we should head back when either of our SPGs read 157 bar/2270 psi

The frequency of sound waves remains the same or is unaffected when sound moves from air into water. The correct option is D

Some properties of sound waves will change when it passes from air to water.

The wave's wavelength will lengthen when it passes through the boundary and enters the water.

Because some sound is reflected by the water's surface, the intensity of sound in the water will be lower than it was in the air.

However, because a crest moves away from the border every time a crest approaches it, the frequency will remain the same.

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Complete question:

What happens to a sound wave as it travels from air into water? (a) Its intensity increases. (b) Its wavelength decreases. (c) Its frequency increases. (d) Its frequency remains the same. (e) Its velocity decreases.