on a map The continents have shapes that almost fits together like pieces of jigsaw puzzle how does modern science explain

Answer:

dont know

Explanation:

need points

If the coefficient of friction is.2, the frictional force is 100 N.

The resistive force of friction (Fr) divided by the normal or perpendicular force (N) pushing the objects together yields the coefficient of friction (fr), which is a numerical value. The formula fr = Fr/N serves as a representation of it.

F = N is the equation for frictional force. Let's use the 2-kg block of wood that is resting on a table to be pushed from rest as an example. The static friction coefficient is taken into account in this situation. The static coefficient of wood is 0.5.

F = μN

F = 2 × 100 ×cos60°

F = 200 × 1/2

F = 100 N

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The lowest rock layer is a layer that must be rich in organic matter that was subjected to heat and pressure over time during the formation of oil and gas.

The lowest rock layer can be explained as;

The lowest rock layer refers to the lowermost part of the Earth's mantle, which is a thin rock layer (approximately 250 km).

In the Earth, the layers of rocks are progressively deposited, thereby pressing them to the bottom to generate sedimentary rocks.

The lowest rock layers on the bottom must be rich in organic matter to form fossil fuels.

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Answer: No

Explanation:

A chemical for formula is combined of atomic that is has a chemical compounds

The required age of the rock when half-life of a radioactive isotope is given is calculated to be 16252.3 years.  

First order kinetics' equation for calculating rate constant from provided half-life

t1/2 = 0.693/k

t1/2 = 7000 years

Making k as subject,

k = 0.693/7000 = 0.000099 = 9.9 × 10⁻⁵ yr⁻¹

Ratio of parent isotope : daughter isotope = 1 : 4

Let's suppose that the parent isotope weighs 100 g.

The amount of daughter isotope calculated to be 80 g.

So, the amount of parent isotope left is 100 - 80 = 20 g.

The formula used to determine time interval is as follows:

N = N₀ e⁻kt

where,

N₀ is the initial mass of the isotope 100g

N is the mass of the parent isotope left is 20g.

Time t in years is to be found out.

k = rate constant = 9.9 × 10⁻⁵ yr⁻¹

Putting values in above equation, we get,

20 = 100 e^(-9.9 × 10⁻⁵)t

1/5 = e^(-9.9 × 10⁻⁵)t

log(0.2) = -9.9 × 10⁻⁵ t

t = - log(0.2)/9.9 × 10⁻⁵ = -(-1.609)/9.9 × 10⁻⁵ = 1.609/9.9 × 10⁻⁵ = 10⁵ × 1.16 = 16252.3 years

Thus, the age of the rock is 16252.3 years.

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The force that is not a fundamental force is the frictional force.

In physics, there are four fundamental forces that govern the interactions between particles: gravitational force, electromagnetic force, strong nuclear force, and weak nuclear force.

The gravitational force is responsible for the attraction between objects with mass. It is the force that keeps planets in orbit around the sun and holds us to the Earth's surface.

The electromagnetic force is responsible for interactions between charged particles. It is the force that allows magnets to attract or repel each other and is involved in the behavior of electric currents.

The strong nuclear force holds atomic nuclei together. It is the force that overcomes the electrostatic repulsion between protons in the nucleus and keeps the nucleus stable.

The weak nuclear force is involved in certain types of radioactive decay. It is responsible for processes such as beta decay, where a neutron in an atomic nucleus transforms into a proton, an electron, and an electron antineutrino.

Out of the options given, the force that is not a fundamental force is the frictional force. Frictional force is a contact force that opposes the relative motion or tendency of motion between two surfaces in contact. It is not considered a fundamental force because it arises from the interactions between atoms and molecules at the microscopic level.

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Answer: the scientist measure the eagle's instantaneous speed

Explanation:

80 km/hr was the eagle's instantaneous speed, measured in an instant by the scientist.  50 km/hr is the eagle's average speed, measured over a certain period of time.  The eagle's speed was less than 50 km/hr at times and greater than 50 km/hr at times, during the elapsed time period of measurement

Answer:

A. Rain

Explanation:

Moon + Bow = Moonbow, so Rain + Bow = Rainbow

Pretty simple tbh

Answer:

its B  lol easy

Explanation:

Answer:

6 types of energy and their transfers are noted:  nuclear, light, chemical synthesis, chemical decomposition, mechanical , potential, and kinetic, along with an explanation.

Explanation:

Each energy transition is noted with a "*#."

1.  Lets start with the solar system's sun.  It is comprised of hydrogen and helium atoms that collide with enough force to join and become different elements.  The nucleus is broken apart and particles rearrange to form a new atom, perhaps berylium.  Some of the energy holding the nucleus together is released in the form of heat and light.  The energy in the nucleus is relesased in a nuclear reaction  *1.

*1  Nucleus of an atom releases energy as heat and light.

----------------

The light from the sun goes all directions.  A portion hits the Earth during the daylight hours.  Life has evolved on Earth to to the point that certain plants and some other organisms can capture the light energy.  Trees are a good example.  The chlorophyll in trees is able to capture the light energy and use it to synthesize compounds such as sugars (photosynthesis).  The energy is used to create the bonds of the elements in a sugar molecule.  *2 The process of photosynthesis makes structural compounds as well as sugars.  The sugars carry the stored chemical energy to other parts of the plant involved with metabolism.  When energy is required, the sugars are metabolized into smaller compounds, releasing the energy from the former chemical bonds.

  *2  Chemical energy contained in chemical bonds

---------

Trees also contain complex polymeric celluloses that are made of of complex molecules with many high-energy bonds.That energy may be released if the wood is burned. *3 A small amount of heat, known as the activation energy (e.g., a match), can cause the bonds to break and release even more heat.  This results in fires, which is the conversion of chemical energy into heat and light.

*3.  Decomposition (sometimes combustion)  is the release of chemical energy as heat and light.

----

The heat from a fire may be used to boil water and make steam.  The ability of steam to create pressure on a piston to create movement is the foundation of the industrial revolution.  This is the conversion of chemical energy to heat and then heat to mechanical motion.  

*4.  Conversion of heat to mechanical motion energy.

Stem engines do many tasks.  One is to raise materials such as structural beams to heights above ground for the construction of building.  The mechanical energy is tranferred into potential energy.  *5 This is the energy contained in an object above Earth's surface.  It can be recovered with the object comes back to Earth, if it were attached to a pulley that is used to lift something.

  *5.  Conversion of Mechanical energy to potential energy

An object above Earth has a potential energy that can be coverted to kinetic energy.  If the object is allowed to drop, the potential energy is conveted into kinetic energy.  *6 Physics and Chemistry have formulas that can precisely predict the speed and trajectory of such objects.  They are based on the value for potential energy being converted to kinetic energy which is the speed of the object.

  *6 Conversion of Potential energy to kinetic energy

Fire (Chemical energy → Heat and Light) Electric lamp (Electrical energy → Heat and Light) Microphone (Sound → Electrical energy) Wave power (Mechanical energy → Electrical energy)

Energy is characterised as having the "ability to accomplish work, which is the capacity to apply a force sufficient to move an object." Despite this unclear definition, the concept is actually quite straightforward energy is just the force that moves objects. Potential and kinetic energy are the two different categories.

It is possible to change the form of energy. Examples Our cars are filled with gasoline (chemical), which, with the aid of electrical energy from a battery, produces mechanical (kinetic) energy. Our TVs are powered by purchased electricity, which is then transformed into light and music.

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From the information given,

diameter of ornament = 8

radius = diameter/2 = 8/2

radius of curvature, r = 4

Recall,

focal length, f = radius of curvature/2 = 4/2

f = 2

Recall,

magnification = image d

Reionization of the neutral gas in the universe occurred due to the ionizing radiation produced by the first generation of stars and galaxies. These objects formed during the early stages of the universe's evolution, after the initial phase known as the "Dark Ages." As these stars and galaxies emitted ultraviolet light, they ionized the surrounding neutral hydrogen gas, converting it into ionized plasma.

The process of reionization began around 150 million years after the Big Bang and continued until approximately 1 billion years afterward. This event had a significant impact on the large-scale structure of the universe, as it altered the balance between gravitational forces and radiation pressure. Consequently, the formation of new stars and galaxies slowed down during this period.

In summary, the reionization of the neutral gas in the universe occurred due to the ionizing radiation emitted by the first stars and galaxies, which played a vital role in shaping the evolution and structure of the universe.

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Solving for d using the calculated values for t, we find that the distance from spacecraft at which spacecraft should turn on its rockets is approximately 8670.7 meters.

To determine the distance from spacecraft at which spacecraft should turn on its rockets, we need to consider the motion of each spacecraft as it slows down.

Let's call the time elapsed from the moment spacecraft turns on its rockets until it comes to a complete stop t1. The initial velocity of spacecraft is 154.5 m/s and it slows down at a rate of 17.1 m/s^2, so its velocity after time t1 is given by:

v1 = 154.5 m/s - 17.1 m/s^2 * t1

The distance traveled by spacecraft during this time can be calculated as:

d1 = 154.5 m/s * t1 - (1/2) * 17.1 m/s^2 * t1^2

Next, let's call the time elapsed from the moment spacecraft turns on its rockets until it comes to a complete stop t2. The initial velocity of spacecraft is 133.0 m/s and it slows down at a rate of 22.2 m/s^2, so its velocity after time t2 is given by:

v2 = 133.0 m/s - 22.2 m/s^2 * t2

The distance traveled by spacecraft during this time can be calculated as:

d2 = 133.0 m/s * t2 - (1/2) * 22.2 m/s^2 * t2^2

Since the two spacecraft are moving towards each other, their relative velocity is the sum of their initial velocities:

v_rel = 154.5 m/s + 133.0 m/s = 287.5 m/s

The time elapsed until they meet, have zero relative velocity, and arrive at the same time, t, can be calculated as:

t = v_rel / (17.1 m/s^2 + 22.2 m/s^2)

The distance traveled by each spacecraft during this time can be calculated using the equations for velocity and distance given above. The total distance between the two spacecraft when they meet is the sum of these distances, so the distance from spacecraft at which spacecraft should turn on its rockets is given by:

d = d1 + d2 = (154.5 m/s * t - (1/2) * 17.1 m/s^2 * t^2) + (133.0 m/s * t - (1/2) * 22.2 m/s^2 * t^2)

Solving for d using the calculated values for t, we find that the distance from spacecraft at which spacecraft should turn on its rockets is approximately 8670.7 meters.

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The total complex power delivered to the load is S = (8367.08 - j470.97) kVA.

To find the total complex power delivered to the load, we can use the formula:

S = 3 * Van² * ZΔ / (3 * Zline + ZΔ)

where S is the complex power delivered to the load, Van is the line-to-neutral voltage, ZΔ is the load impedance in the delta configuration, and Zline is the impedance of each line.

Given:

Van = 208 ∠∠0° V

ZΔ = (51 + j45) Ω

Zline = (0.4 + j1.2) Ω

Substituting these values into the formula, we get:

S = 3 * (208 ∠∠0°)² * (51 + j45) Ω / [3 * (0.4 + j1.2) Ω + (51 + j45) Ω]

Simplifying the expression in the denominator:

3 * (0.4 + j1.2) Ω + (51 + j45) Ω

= (1.2 + j3.6) Ω + (51 + j45) Ω

= 52.2 + j48.6 Ω

Substituting this back into the formula and simplifying, we get:

S = 3 * (208 ∠∠0°)² * (51 + j45) Ω / (52.2 + j48.6 Ω)

= 8526.24 ∠∠-3.164° VA

= (8526.24 cos(-3.164°) + j8526.24 sin(-3.164°)) kVA

= (8367.08 - j470.97) kVA

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The tangental acceleration of the flywheel of  radius 2.12 cm with a final angular velocity of 1820 rev/min and an angular acceleration of 16.2 rad/s is 0.34 m/s².

This is the rate of change of tangental velocity of an object in circular motion.

To calculate the tangental acceleration, we use the formula below.

Formula:

Where:

From the question,

Given:

Subsitute these values into equation 1

Hence, The tangental acceleration of the flywheel of  radius 2.12 cm with a final angular velocity of 1820 rev/min and an angular acceleration of 16.2 rad/s is 0.34 m/s².

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The correct choice is the third option.

This comes from the fact that the packing material cushions the impacts of the content in case of a fall.

The magnetic field is in perpendicular to both of electric field and the EM wave and its magnitude will be E/c. where c be velocity of light.

EM waves are another name for electromagnetic waves. When an electric field interacts with a magnetic field, electromagnetic waves are created. These electromagnetic waves make up electromagnetic radiations. It is also possible to say that electromagnetic waves are made up of magnetic and electric fields that are oscillating. The basic equations of electrodynamics, Maxwell's equations, have an answer in electromagnetic waves.

According to question: an  electromagnetic wave moves to the right and  electric field's direction is out of the page.

So, magnetic field is in perpendicular to both of electric field and the EM wave and its magnitude will be E/c. where c be velocity of light.

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the acceleration when the velocity is 0 m/s is 6 m/s².

a) Find the velocity and acceleration as functions of t.The equation of motion of a particle is given as s = t³ - 3t, where s is in meters and t is in seconds. We can find the velocity and acceleration by differentiating the displacement equation with respect to time t:

Velocity, v(t) = s'(t) = (d/dt)(t³ - 3t)

                     = 3t² - 3

Acceleration, a(t) = v'(t)

                            = (d/dt)(3t² - 3)

                            = 6t

b) Find the acceleration after 35 seconds.

The equation for acceleration as a function of time t is a(t) = 6t.

Therefore, we need to evaluate the acceleration function at t = 35. Substituting t = 35 in the acceleration function, we get:a(35) = 6(35) = 210 m/s²c)

Find the acceleration when the velocity is 0.Since the velocity is zero, we can equate the velocity equation to zero and solve for the time:

0 = 3t² - 3t

⇒ 3t(t - 1) = 0

So, t = 0 s or t = 1 s.

However, we're interested in the acceleration when the velocity is zero.

Therefore, we differentiate the velocity function with respect to time to obtain the acceleration function and evaluate the acceleration function at t = 1 s.

Differentiating the velocity function, we get:a(t) = 6tTherefore, a(1) = 6(1) = 6 m/s²

Therefore, When the velocity is 0 m/s, the acceleration is 6 m/s2.

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The chief factor that determines what type of electromagnetic radiation that objects give off in the absence of a strong magnetic field is their temperature.

The radioactive activity refers to the energy that a atomic nucleus can release in a given period of time due to the emission of different types of radiation.

This activity (radioactive activity) increases as temperature rises due to a higher collision of subatomic particles that form molecules.

In conclusion, the chief factor that determines what type of electromagnetic radiation in the absence of a magnetic field is temperature.

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ANSWER:

$ 12177

STEP-BY-STEP EXPLANATION:

We must calculate the area of the playground, knowing that the area is equal to length times width, like this:

Now, knowing the area, we can calculate the total cost, like this:

The resurfacing cost is $ 12177

Answer:

the first one is Primary

the second one I think it's Mature but I don't know

According to   equations of motion, we get after 8.70 seconds  she running directly east.

These are the three equations:

Given :

v₀ = 2.38 m/s

v = 0 m/s

a = 0.310 sin (-62.0°) m/s²

to find time t :

v = at + v₀

0 m/s = (0.310 sin (-62.0°) m/s²) t + (2.38 m/s)

t = 8.70 s

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Answer:

The answer is A, I just took the quiz :)

ik you already got the answer, but just in case anyone else who gets this question looks here, the person who said A was right!!

The total mass of the product nuclei is greater than the mass of the target nucleus

"Nuclear fission products are the atomic fragments left after a large atomic nucleus undergoes nuclear fission. Typically, a large nucleus like that of uranium fissions by splitting into two smaller nuclei, along with a few neutrons, the release of heat energy (kinetic energy of the nuclei), and gamma rays."

"Change in the identity or characteristics of an atomic nucleus, induced by bombarding it with an energetic particle. The bombarding particle may be an alpha particle, a gamma-ray photon, a neutron, a proton, or a heavy ion."

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Declaring war, levying taxes, regulating commerce, minting money, and controlling immigration are five instances of implied powers.

Thus these are the five examples of implied powers.

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The dietary calories in 1670 kilojoules of energy are 399.14 Cal.

Solution:

Now we convert kilojoules to dietary calories

Calories in 1670 kilojoules = \(1670 KJ * \frac{1000J}{1kg} *\frac{1cal}{4.184J} *\frac{1 cal}{1000cal}\)

Calories in 1670 kilojoules  = 399.14 Cal

Hence, the dietary calories in 1670 kilojoules of energy are 399.14 Cal.

Adding filling between layers holds the layers together and adds both flavor and height to the cake. Using 12 icing-filled tipped sachets, pipe frosting just inside the outer edge of the layer. This creates a dam that prevents the filling from seeping out.

A layer cake or sandwich cake is a cake made from several stacked cake sheets bound together with icing or another type of filling such as jam or other jams. Most cake recipes can be adapted for layered cakes. Butter cakes and sponge cakes are common.

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Answer:…..

Explanation:

The quantity of heat energy supplied to the water from the metal is 2520 J.

The quantity of heat energy needed to increase the temperature of one kilogram of a substance by one degree Celsius is known as the substance's specific heat capacity.

Here,

Mass of the water in the container, m = 50 g = 0.05 kg

Initial temperature of the water, T₁ = 20°C = 293 K

Final temperature of the water, T₂ = 32°C = 305°C

Specific heat capacity of water, C = 4200 J/kgK

The expression for the quantity of heat energy supplied to the water from the metal is given by,

Q = mcΔT

Q = mC(T₂ - T₁)

Applying the values of m, C, T₁ and T₂

Q = 0.05 x 4200 (305 - 293)

Q = 210 x 12

Q = 2520 J

Hence,

The quantity of heat energy supplied to the water from the metal is 2520 J.

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Answer:

40000N

Explanation:

Given parameters:

Mass of the car = 1000kg

Velocity of the car  = 20m/s

Time taken  = 0.5s

Unknown:

Force on the car  = ?

Solution:

According to Newtons second law of motion:

 F = m a

F is the force

m is the mass

 a is the acceleration

 F = m \(\frac{change in velocity}{time}\)  

 Change in velocity  =  0 - 20  = -20m/s

 F = 1000 x \(\frac{-20}{0.5}\)  = -40000N

The force on the car is 40000N

The EMF of the secondary in a step-up transformer is 3,600 V.

The transformer consists of two coils, namely the primary coil and the secondary coil. A step-up transformer will have a higher number of turns in the secondary coil and a higher voltage across the secondary coil. According to the formula

Np ÷ Ns = Vp ÷ Vs

Np ÷ Ns = Is ÷ Ip

Np ÷ Ns = Vp ÷ Vs

500 ÷ 15,000 = 120 ÷ Vs

Vs × 500 = 120 × 15,000

Vs × 500 = 1,800,000

Vs = 1,800,000 ÷ 500

Vs = 3,600 V

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In a collision between two unequal masses, both masses receive equal magnitude impulses.

When two objects collide, the total momentum before the collision is equal to the total momentum after the collision (according to the law of conservation of momentum). However, the individual magnitudes of the impulses experienced by the two masses can differ.

Impulse is defined as the change in momentum of an object and is equal to the force applied to the object multiplied by the time it acts. In the case of a collision between two unequal masses, the change in momentum of each object is the same, resulting in equal magnitude impulses.

The impulse experienced by an object can be calculated using the equation:

Impulse = Force × Time

During a collision, the force exerted on each object is equal and opposite, according to Newton's third law of motion. The duration of the collision is the same for both masses. Therefore, the product of force and time, which determines the impulse, is equal for both masses.

Hence, in a collision between two unequal masses, both masses receive equal magnitude impulses.

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Explanation:

Distance 250m, displacement 50m

Answer:

increase

Explanation:

please mark as brainlyest

Answer

A.Increses

Explanation: