What is the electrostatic force between 2 protons in a nucleus if they are separated by a distance of 8*10-18 m ??

Answer:

Wavelength

Explanation:

The dynamic viscosity of oxygen at 40°C and 160 kPa is 64.17 × 10⁻⁶ Pa.s.

The dynamic viscosity of a fluid is equal to its kinematic viscosity multiplied by its density.

Given:

Kinematic viscosity of oxygen at 40°C and 160 kPa = 0.104 stokes

Density of oxygen at 40°C and 160 kPa = (160000 Pa / 0.2598 kPa.m³) = 616.55 kg/m³ (using ideal gas law)

Using the formula:

Dynamic viscosity = Kinematic viscosity * Density

We get:

Dynamic viscosity of oxygen = 0.104 stokes * 616.55 kg/m³ = 64.17 × 10⁻⁶ Pa.s

Therefore, the dynamic viscosity of the oxygen at 40°C and 160 kPa is 64.17 × 10⁻⁶ Pa.s.

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answer: this object is stationary because it is in rest position until or unless the external force act on it we can say this by netwons 1st law

and the stationaty object has relatively zero velocity.

netwons 1st law: Newton's first law states that unless compelled to change its state by the action of an external force, every object will remain at rest or in uniform motion in a straight line.

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 2. here the object has contact with the wall hence there is a  normal force between clock and wall  

the clock is at rest this means that the forcee is balanced and normal force is balanced by gravitational force .the normal force is always perpendicular to the surface of the object.

there is no external force is acting on the clock.

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Answer:

13.94 to 2 d.p

Explanation:

just add them all up and i am confused the ones you said or the ones listed ?

the one i did was the listed ones

Answer:

100 m

Explanation:

The acceleration due to gravity on Mercury is 3.72 m/\(s^2\) and the instrument's mass on earth and on Mercury is 8.99 and 8.98 respectively.

Part A:

To work out the speed increase because of gravity on Mercury, we can utilize the recipe:

F = mg

where F is the heaviness of the article, m is its mass, and g is the speed increase because of gravity. We realize that the item weighs 88.2 N on The planet and 33.4 N on Mercury. Subsequently, we can set up two conditions:

88.2 N = m * gE (where gE is the speed increase because of gravity on The planet)

33.4 N = m * gM (where gM is the speed increase because of gravity on Mercury)

Separating the second condition by the first, we get:

33.4 N/88.2 N = gM/gE

Addressing for gM, we get:

gM = (33.4 N/88.2 N) * 9.81 m/\(s^2\)

gM = 3.72 m/\(s^2\)

In this way, the speed increase because of gravity on Mercury is 3.72 m/\(s^2\).

Part B:

To compute the mass of the instrument on The planet and on Mercury, we can improve the recipe utilized To a limited extent A to settle for m:

m = F/g

On The planet:

m = 88.2 N/9.81 m/\(s^2\)

m = 8.99 kg

On Mercury:

m = 33.4 N/3.72 m/\(s^2\)

m = 8.98 kg

In this manner, the mass of the instrument on The planet and on Mercury is roughly 8.99 kg and 8.98 kg, separately.

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The volume and the density of the piece of metal are 3×10⁻⁵ m³ and 6666.67 kg/m³ respectively.

Density can be defined as the ratio of mass and volume of an object.

To calculate the volume of the metal piece, we use the formula below.

Formula:

Where:

Note: Recall from Archimedes' principle that an object will displace a volume of water that is equal to his own volume.

Make V the subject of the equation

From the question,

Given:

Substitute these values into equation 2

To calculate the density of the metal piece, we use the formula below

Formula:

Where:

Given:

Substitute these values into equation 3

Hence, The volume and the density of the piece of metal are 3×10⁻⁵ m³ and 6666.67 kg/m³ respectively.

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Answer:

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Thermal expansion is defined as the property of metals to expand when they are heated.

The metal expands when heated because the atoms move apart more.

An excellent method to demonstrate the concept of thermal expansion is using the bar and gauge experiment.

Both the diameter and the length are precisely comparable when both are at room temperature.

The bar will not fit within the gauge once it has been heated and cooled. Similar to the last instance; the bar will no longer fit flush inside the gauge if the gauge is heated and the bar is cooled.

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Diving seabirds need to account for the bending of light because water has a higher refractive index than air.

When light passes through the air-water interface, it slows down and changes direction, causing the image of an object to appear distorted. This phenomenon is known as refraction. For diving seabirds, the refraction of light can make it challenging to accurately locate their prey when diving, which is essential for their survival.

To account for the bending of light, diving seabirds have evolved specialized eyes that allow them to adjust their focus and perceive images differently than humans. These adaptations enable the birds to see through the distorted image caused by refraction and accurately locate their prey while diving. One adaptation that diving seabirds have is a flattened cornea, which allows them to maintain a sharp focus while diving.

Overall, the ability of diving seabirds to account for the bending of light is essential for their survival, as it enables them to accurately locate and catch their prey while diving in the often murky and challenging conditions of the ocean.

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Answer:

In fission, energy is gained by splitting apart heavy atoms, for example uranium, into smaller atoms such as iodine, caesium, strontium, xenon and barium, to name just a few. However, fusion is combining light atoms, for example two hydrogen isotopes, deuterium and tritium, to form the heavier helium.

Explanation:

I hope this helped you

(Sorry If it didn't)

Complete Question

A parallel-plate air capacitor of capacitance 245 pF has a charge of magnitude 0.148μC on each plate. The plates are 0.328 mm  apart.What is the magnitude of the surface charge density on each plate?

Answer:

The value  is   \(\sigma  =  1.63 *10^{-7} C/m^2 \)

Explanation:

Generally the surface charge density is mathematically represented as

     \(\sigma  =  E  *  \epsilon_o\)

Here  E is the electric field which is mathematically evaluated as

      \(E =  \frac{Q }{C* d }\)

So substituting  \(245 pF = 245 *10^{-12}\ F\) for C , \(0.328\ mm = 0.328*10^{-3} \  m\)  for  d and  \(0.148\mu C  =  0.148*10^{-6} \  C\) for  Q we have

     \(E =  \frac{0.148*10^{-6}  }{245 *10^{-12}* 0.328*10^{-3}  }\)

      \(E =  1840  *10^{3} \  V\)

Hence

     \(\sigma  =  1840  *10^{3}  *  8.85*10^{-12}\)

      \(\sigma  =  1.63 *10^{-7} C/m^2 \)

Answer:

c

Explanation:

units c mark me brainless k

Answer:

Primary Succession is defined as the type of ecological succession, which occurs or start from the barren, uninhabited and unoccupied areas, such as the newly formed pond, rock, dunes, etc., while such kind of succession, which occurs in the area where there was the existence of life previously but got abandoned due to natural disturbances like deforestation, natural calamities (flood, earthquake, tsunami), the field with no vegetation is known as Secondary Succession

Explanation:

Some examples of primary succession include the formation of a new ecosystem after a volcano, glacier outbursts, or a nuclear explosion. Some examples of secondary succession include succession after fire, harvesting, logging, or abandonment of land or the renewal after a disease outbreak

i hope this answer helps :)

\(\\ \sf\longmapsto a=\dfrac{v^2-u^2}{2s}\)

\(\\ \sf\longmapsto a=\dfrac{-(5.6)^2}{2(4.3)}\)

\(\\ \sf\longmapsto a=\dfrac{-31.36}{8.6}\)

\(\\ \sf\longmapsto a=-3.6m/s^2\)

And

\(\\ \sf\longmapsto v=u+at\)

\(\\ \sf\longmapsto t=\dfrac{v-u}{a}\)

\(\\ \sf\longmapsto t=\dfrac{-5.6}{-3.6}\)

\(\\ \sf\longmapsto t=1.5s\)

Answer:

is there more?

Explanation:

Using the formula F = G * (m1 * m2) / r^2, where G is the gravitational constant, m1 and m2 are the masses of the two objects, and r is the distance between them, we can calculate the gravitational force between Jupiter and the sun.

Plugging in the values, we get:

F = (6.674 x 10^-11 N * (m^2 / kg^2)) * ((1.9 x 10^27 kg) * (2 x 10^30 kg)) / (78 x 10^6 m)^2

Simplifying this, we get:

F = 1.98 x 10^27 N

Therefore, the gravitational force between Jupiter and the sun is approximately 1.98 x 10^27 Newtons.

The gravitational force between Jupiter and the sun, calculated using Newton's law of gravitation with their masses and distance, is \(1.95 * 10^{22} N.\)

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Answer:

the air particles dont move as fast in the cold air as in warm, so it doesnt push as often and shrinks.

Explanation:

see above

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Since the air molecules in cold air travel more slowly than they do in warm air, the air pushes less frequently and contracts.

Refraction is the process by which a wave changes direction while transitioning through one medium to another in physics. As an illustration, waves move much faster in the open ocean than in the shallow.

A tsunami will swing until it is moving perpendicular to the coastline if it is approaching a beach at an angle because the wave's outermost layer goes quicker than its inner portion. In warm air compared to cold, sound waves move more quickly. A lake's surface cools at night, and any sound waves that ascend are bent down by the warmer upper levels of the atmosphere. Because of their varying speeds, the electromagnetic waves which make up light are distorted when they move through a clear substance.

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Answer:

1. F = 569 N

2. F_net = 101N

3. a = 1.74m/s²

Explanation:

Weight is a force measurement.

F = m*a

F = 58.0kg*9.81m/s²

F = 568.98 N

F_net = 670N+(-569N)

F_net = 101N

a = F/m

a = 101N/58.0kg

a = 1.74m/s²

The combined weight of the parachutist and parachute is equal to 568.98 N and the net force due to air resistance exerts a total upward force of 101.02N on her and her parachute, then the magnitude of the acceleration of the parachutist is 1.74 m/s².

Newton's second law states that the resultant force acting on a body is proportional to the rate of change of momentum of that body.

If a  parachutist relies on air resistance to decrease her downward velocity.

The mass of the parachutist and her parachute is 58 kg

The air resistance exerts a total upward force of 670 N

The combined weight of the parachutist and parachute, W = mg

W = 58 × 9.81

W = 568.98 N

The net force on the parachutist = 670 - 568.98 = 101.02 N

The acceleration of the Parachutist = Net force/mass

a = F/m

a = 101.02/58

a  = 1.74 m/s²

Thus, the magnitude of the acceleration of the parachutist would be 1.74m/s².

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Answer:from,

v=at+u then ,time=4seconds

we take u=initial speed which is zero

(0)

 now, v=(10x4+0)m/s

then, velocity/speed is 40m/s

Explanation:from firt newton's laws of motion where from acceleration is rate of change of speed then we generate the eqn where now the stone was falling fat a certain height were we include acceleration due to gravity and multiply to time and sum to initial speed to get

The two cars illuminated by sodium lamps appear black because the red and black colours are absorbed and no colour is reflected.

Reflection of light is the ability of light rays to bounce back off a surface when they are incident on that surface

The ability of light to be reflected gives rise to changes in the colour of objects

When light is incident on a surface, the colour that is reflected gives the colour of that object.

Therefore, when two cars of red and black colur are illuminated by sodium lamps, they appear black because the red and black colours are absorbed and no colour is reflected.

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The diameter of the smaller end of the pipe is approximately 0.78 meters.

To determine the diameter of the smaller end of the pipe, we can use the principle of conservation of mass. According to this principle, the mass flow rate of water should remain constant throughout the pipe.

The mass flow rate is given by the equation:
Mass flow rate = density of water * cross-sectional area * velocity

Since the density of the water remains constant, we can write:
Cross-sectional area1 * velocity1 = Cross-sectional area2 * velocity2

Given that the velocity1 is 13 m/s, the diameter1 is 1.2 m, and the velocity2 is 30 m/s, we can solve for the diameter2 using the equation:
(pi * (diameter1/2)^2) * velocity1 = (pi * (diameter2/2)^2) * velocity2

Simplifying the equation:
(1.2/2)^2 * 13 = (diameter2/2)^2 * 30

Calculating the equation:
(0.6)^2 * 13 = (diameter2/2)^2 * 30

0.36 * 13 = (diameter2/2)^2 * 30

4.68 = (diameter2/2)^2 * 30

Dividing both sides by 30:
0.156 = (diameter2/2)^2

Taking the square root of both sides:
0.39 = diameter2/2

Multiplying both sides by 2:
0.78 = diameter2

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Ecotourism has the potential to eliminate the requirement to hunt wildlife for a living. Ecotourism generates revenue by maintaining the rainforest; deforestation is discouraged because it reduces tourist revenue.

Ecotourism firms safeguard biodiversity by preserving animals in their natural habitats and preserving natural ecosystems in biosphere reserves, wildlife sanctuaries, and national parks.

Ecotourism contributes to the preservation of a destination's ecological and biological diversity. For example, since Costa Rica's jungle is so popular with visitors, inhabitants work hard to protect it instead of attempting deforest it for a short-term profit.

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The period of the pendulum allows to find the result for how much it advances when the length is reduced is:

           Δt = 1550 s

Simple harmonic motion is an oscillatory motion where the restoring force is proportional to the displacement.

In the case of the simple pendulum, this is fulfilled for small angles minus 15º, the angular velocity of the pendulum is

           w = \(\frac{g}{L}\)  

Angular velocity and period are related

           w = \(\frac{2pi}{T}\)

We substitute

            T = \(2\pi \ \frac{L}{g}\)  

They indicate that for the initial length L₀ and the pendulum marks the exact time, how much time changes if the length is  3.97 feet, therefore the initial length is L₀ = 3.90 feet.

            \(T_o^2 = 4 \pi ^2 \ \frac{L_o}{g}\)  

The period for the reduced length is:

           \(T'^2 = 4\pi ^2 \ \frac{L}{g}\)  

The relationship between the periods is:

            \(( \frac{T}{T'}^2 = \frac{L_o}{L} \\T' = \sqrt{\frac{L_o}{L} } \ T\)

Let's calculate

             T ’=  \(T \ \sqrt{\frac{3.97}{3.9} }\)  

             T ’= T 1.01795

In the total time of a day.

             T = 24 hours (3600 s / 2h) = 86 400 s

We calculate

             T ’= 86400 1.01795

              T ’= 87,950 s

Therefore the pendulum moves forward in a time of:

           ΔT = T'- T

           ΔT = 87950 - 86400

           ΔT = 1550 s

In conclusion, using the period of the pendulum we can find the result for how much it advances when the length is change is:

           ΔT = 1550 s

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Answer:

Explanation:

        Newton's First Law:

" The observation that objects in motion tend to stay in motion, and objects at rest tend to stay at rest unless an outside force acts upon them. "

Newton's first law is that if the net force acting on an object is zero, that the object's velocity remains constant.

The easy way to think of it is like this:

Unless acted on by an unbalanced external force, an object in motion will remain in motion, and an object at rest will remain at rest.

If you imagine a soccer ball sitting still on the ground, it's not going to go anywhere. But if someone comes along and kicks it, they are applying an external force, and now the ball is going to go somewhere. As it rolls along the field, friction starts to act on it (both in the form of wind resistance, and friction between the ball and the field,) which will slow it down, until it stops.

Inertia is the tendency of a body to resist changes to its velocity. The more mass something has, the more inertia it has. If you stand still on a stationary bus, without holding the handrail, you'll be thrown off balance when the bus starts moving. Because your body wants to stay at rest, so it briefly resists the change in velocity brought on when the bus starts moving.

Explanation:

Yes, there are differences in the shapes of position-time graphs for uniform acceleration and uniform deceleration in different directions. Let's consider each case separately:\(\hrulefill\)

(1) - Uniform acceleration towards the positive direction:

In this case, the object is moving in the positive direction with a constant acceleration. The displacement-time graph will typically be a curve that starts from an initial position and shows a steady increase in displacement over time. The shape of the graph will depend on the specific acceleration value.

(2) - Uniform acceleration towards the negative direction:

In this case, the object is moving in the negative direction with a constant acceleration. The displacement-time graph will also be a curve, but it will show a steady decrease in displacement over time.

(3) - Uniform deceleration towards the positive direction:

In this case, the object is initially moving in the positive direction but is slowing down with a constant deceleration. The displacement-time graph will be a curve that starts with a positive slope and gradually levels off.

(4) - Uniform deceleration towards the negative direction:

In this case, the object is initially moving in the negative direction but is slowing down with a constant deceleration. The displacement-time graph will be a curve that starts with a negative slope and gradually levels off.

Answer:

here is answer!

Explanation:

Question 1:

Light bends when it transitions from air to glass due to differences in refractive indices. It follows an incident path in air, refracts at the air-glass boundary, and continues through the glass as a transmitted ray. Total internal reflection may occur if the angle of incidence is large enough.

Question 2:

Brightness in the wave model of light is determined by the amplitude and intensity of the light waves. Higher amplitudes and intensities correspond to brighter light. When multiple light waves overlap, their amplitudes add up, resulting in increased brightness