What happens more on Earth, physical or chemical changes?

Answer:

The speed of a and b will be same about 3.333 m/s after collision.

Explanation:

In a perfectly inelastic collision the bodies gets attached to each other after collision .

In this type of collision the final  kinetic energy gets lowered than the initial one. Whereas the momentum before and after the collision still remains constant.

Thus we apply the theory of conservation of momentum.

M1V1+ M2V2 = (M1+M2)V

Thus V= 40/12 =3.33 m/s

Learn more about inelastic collision here https://brainly.com/question/14521843

#SPJ4

The riders on the fairgrounds ride will experience a centripetal acceleration equivalent to 2.50 times the acceleration due to gravity at a rate of X revolutions per minute.

The centripetal acceleration experienced by the riders can be calculated using the formula:

centripetal acceleration = (velocity squared) / radius

Since the riders are moving in a horizontal circular path with a radius of 6.00 m, we need to find the velocity at which they are traveling. The velocity can be determined by multiplying the circumference of the circular path by the number of revolutions per minute (rpm) and converting it to meters per second (m/s).

The circumference of a circle is given by 2πr, where r is the radius. In this case, the circumference is 2π(6.00 m). To convert from revolutions per minute to seconds, we divide by 60. Therefore, the velocity can be calculated as:

velocity = (2π * 6.00 m * X rpm) / 60

Now, we can substitute this velocity value into the centripetal acceleration formula:

centripetal acceleration = ((2π * 6.00 m * X rpm) / 60)² / 6.00 m

Given that the magnitude of the centripetal acceleration is 2.50 times the acceleration due to gravity (9.8 m/s²), we can write the equation:

2.50 * 9.8 m/s² = ((2π * 6.00 m * X rpm) / 60)² / 6.00 m

Simplifying and solving for X, we can determine the number of revolutions per minute (rpm) at which the riders will experience the specified centripetal acceleration.

Learn more about centripetal acceleration

brainly.com/question/13380934

#SPJ11

Given a radius of 6m and the subjected centripetal acceleration being 2.5 times the acceleration due to gravity (g = 9.8 m/s²), the velocity of the ride is found to be about 12.06 m/s. This equates to approximately 19.2 revolutions per minute.

The subject of this problem is centripetal acceleration in circular motion, such as a fairground ride. The centripetal acceleration is given by the equation ac = v² / r , where 'v' is the velocity and 'r' is the radius of circular motion. However, because we need to relate the centripetal acceleration to gravity (ac = 2.5g), the equation becomes 2.5g = v² / r . The acceleration due to gravity is approximately 9.8 m/s².

Substituting in the given radius and acceleration due to gravity values, we get 24.5 m/s² = v²/6m. Solving for 'v', we find the speed to be approximately 12.06 m/s.

We are however asked for the speed in revolutions per minute (rpm). To get this, we need to convert the speed from m/s to rpm. We know the circumference of the circular path (2πr), so the speed in revolutions per second is v/(2πr) = 12.06 m/s / (2π×6m) = approximately 0.32 revolutions per second. To convert to minutes, multiply by 60 to give approximately 19.2 revolutions per minute.

https://brainly.com/question/34218083

#SPJ12

Newton's third law states that if an object A exerts a force on object B, then object B must exert a force of equal magnitude and opposite direction back on object A.

Let:

A = Hammer

B = Nail

so:

Therefore:

The hammer exerts a force on the nail; the nail exerts a force on the hammer.

The differential equation governing the displacement of an object in a spring mass system is given by \(\(\frac{{d^2x}}{{dt^2}} + 4\frac{{dx}}{{dt}} + 4x = -17x\)\), with initial conditions \(\(x(0) = 1\)\) and \(\(x'(0)\)\) to be determined.

To solve the differential equation, we can use the method of characteristic equations. First, let's rewrite the equation in a more standard form:

\(\(\frac{{d^2x}}{{dt^2}} + 4\frac{{dx}}{{dt}} + 21x = 0\)\)

The characteristic equation corresponding to this differential equation is given by:

\(\(r^2 + 4r + 21 = 0\)\)

Solving this quadratic equation, we find that the roots are complex:

\(\(r = -2 \pm \sqrt{5}i\)\)

The general solution of the differential equation is then given by:

\(\(x(t) = c_1 e^{(-2 + \sqrt{5}i)t} + c_2 e^{(-2 - \sqrt{5}i)t}\)\)

Applying the initial condition \(\(x(0) = 1\)\), we have:

\(\(c_1 + c_2 = 1\)\)

To determine the value of \(\(x'(0)\)\), we differentiate \(\(x(t)\)\) with respect to \(\(t\)\) and evaluate it at \(\(t = 0\)\):

\(\(x'(t) = (-2 + \sqrt{5}i)c_1 e^{(-2 + \sqrt{5}i)t} + (-2 - \sqrt{5}i)c_2 e^{(-2 - \sqrt{5}i)t}\)\\\\\(x'(0) = (-2 + \sqrt{5}i)c_1 + (-2 - \sqrt{5}i)c_2\)\)

Since we are given \(\(x'(0)\)\) but not the specific values of \(\(c_1\)\) and \(\(c_2\)\), we cannot determine the final answer without additional information.

To learn more about displacement refer:

https://brainly.com/question/29769926

#SPJ11

Carbon moves around the atmosphere in several ways. Option A is the answer.

Carbon has several effects on the atmosphere, which can have significant impacts on the Earth's climate and ecosystems. Carbon dioxide (CO2), a greenhouse gas, is released into the atmosphere through human activities such as burning of fossil fuels, and deforestation. CO2 and other greenhouse gases trap heat in the Earth's atmosphere, causing global warming and climate change.

It can lead to more frequent and severe weather events such as floods, droughts, and hurricanes. This can also cause damage to ecosystems, including coral reefs, and can lead to the extinction of some species.

Excess carbon in the atmosphere can also lead to ocean acidification, as more CO2 is absorbed into the oceans, leading to a decrease in pH levels. This can harm marine life, such as coral reefs, which are important ecosystems for many marine organisms.

Learn more on global warming here https://brainly.com/question/26402403

#SPJ1

1. In order to reverse the direction of rotation of a split-phase induction motor, you need to swap the positions of the starting and running windings in the stator circuit.

This can be accomplished by either physically swapping the connections or by using a specialized reversing switch that automatically switches the connections for you. By reversing the positions of the windings, you reverse the direction of the magnetic field in the stator, which in turn reverses the direction of rotation of the rotor.2. A schematic diagram of a split-phase induction motor connected for 230-volt operation would look like the following:

In this configuration, both running windings are connected in parallel to the 230-volt supply, while the starting winding is connected in series with a capacitor to provide the necessary phase shift for starting. The capacitor is typically rated at a few microfarads and must be selected based on the motor's specifications to ensure proper operation. By using a dual-voltage rating, the motor can be easily connected to either a 115-volt or 230-volt power supply, making it versatile and suitable for a wide range of applications.

To learn more about circuit visit;

https://brainly.com/question/12608516

#SPJ11

Explanation:

For example, when a drum is struck, the flexible skin (sometimes called a membrane) of the drum vibrates. The compression and expansion of the air on either side of the vibrating membrane produces differences in air pressure. The pressure differences generate a sound wave that propagates outward from the drum surface.

The definition of eccentricity allows us to find that the answer for the distance to the focus is

             c = 4.6 10⁶ km

The orbit of the plants without ellipses, where the eccentricity is the ratio between the distance to the focus and the major axis  

                e = \(\frac{c}{a}\)

Where e is the eccentricity, c the distance to the focus and a the major axis

In this case they indicate the value of the eccentricity e = 0.92 and the value of the major axis a = 5 10⁶ km

              c = e a

Let's calculate

              c = 0.92 5 10⁶

              c = 4.6 10⁶ km

In conclusion using the definition of eccentricity we can calculate the distance to the focus is

             c = 4.6 10⁶ km

Learn more here:  brainly.com/question/17817893

Answer:

4,600,000 km

Explanation:

Answer:

D

Explanation:

Because you add them all up it equals 9

Rock pores and small fissures allow water to soak in. When water freezes, its volume swells, widening fissures in the rock.

Two types of physical weathering can be distinguished: Water performs a process known as freeze-thaw when it seeps into cracks over time, freezes, and then expands, eventually breaking the rock.

As the temperature dips below freezing, the water seeps into the cracks in the rocks and expands into ice. The tremendous pressure and wedge-like action of the expansion on the nearby rock causes the cracks to widen. Water that freezes and thaws frequently causes the rock to disintegrate.

To know more about frost wedging process visit:-

https://brainly.com/question/29844876

#SPJ1

Question:

Which two statements describe part of the frost wedging process?

a) Water enters a crack in a rock.

b) The temperature drops below freezing, causing the water to freeze and expand.

c) The rock heats up and expands, widening the crack.

d) Water evaporates from the crack, leaving behind mineral deposits.

e) Repeated cycles of freezing and thawing cause the crack to widen and deepen.

She would most likely receive a clearer digital radio signal rather than an analog signal because digital radio signals are better equipped to handle electrical interference than analog radio signals.

Digital radio signals are composed of digital data which is broken down into discrete packets that are sent out and received separately makes them more resilient to interference because the signal can be reassembled from the packets even if some of them are distorted. On the other hand, analog radio signals are composed of continuous waves which are more vulnerable to interference and if any part of an analog signal is distorted, the entire signal can be lost. Therefore, digital radio signals are better suited to environments with electrical interference, and Jackie would be more likely to receive a clearer signal if she used a digital radio. If there are no digital radio stations available in Jackie's area, then she would most likely receive a clearer signal if she was using an analog radio.

To learn more about radio signal click here https://brainly.com/question/19338932

#SPJ1

Answer:

1)limited system of government

2)representative system of government

3)individual rights system of government

Explanation:

the 3 basic concepts of government that the English brought with them to North America are listed in the answer

UL Standard 1563 is a safety standard established by Underwriters Laboratories, Inc. for immersion heaters. It sets the maximum water temperature at 104 degrees Fahrenheit to prevent scalding injuries.

Additionally, the standard suggests a maximum time of immersion for safety reasons. The suggested maximum time of immersion varies depending on the specific application and heater type, but generally, it is around 10-15 minutes. However, it is important to note that exceeding the suggested time of immersion can be dangerous and lead to burns or other injuries. Therefore, it is critical to follow the manufacturer's instructions and adhere to the suggested maximum time of immersion to prevent any harm to users. Overall, UL Standard 1563 aims to ensure the safety of users when using immersion heaters by establishing maximum water temperature and immersion time guidelines.

To know more about Laboratories, click this link-

https://brainly.com/question/30753305

#SPJ11

A group of two or more atoms.

A sound that is repeated and is brought on by the surface's reflection of the sound waves. Due to the lag between the sound's initial creation and its return from the reflecting surface, the sound is audible more than once and echo.

Thus, The phrase used to describe the sound is called an echo. It is based on the idea of sound reflection.

After the original sound has faded, we hear the reflected sound. We can now define the term "echo" simply by using the aforementioned statement.

The phrase used to describe the sound is called an echo. It is based on the idea of sound reflection. After the original sound has faded, we hear the reflected sound.

Thus, A sound that is repeated and is brought on by the surface's reflection of the sound waves. Due to the lag between the sound's initial creation and its return from the reflecting surface, the sound is audible more than once and echo.

Learn more about Echo, refer to the link:

https://brainly.com/question/31863957

#SPJ1

Answer:

where are the choices i think 100% that is my opinion

The other pancakes are at various temperatures and Conduction refers to the mode of transfer of thermal energy that arise when the two bodies are in close contact.

The other pancakes are presumably at different temperatures in this scenario. If this is the case, then due to the thermal energy transfer, the pancake with the highest temperature should be the warmest at the bottom. Conduction is the process through which thermal energy is transferred when two bodies are in close proximity to one another.

Thermometers are used to measure the air's temperature. Common thermometers have a glass rod inside of which is a very thin tube. A liquid is delivered to the tube from a reservoir, or "bulb," at the thermometer's base. Sometimes the liquid is reddish alcohol, and other times it is mercury.

To know more about Temperature visit:

https://brainly.com/question/11464844

#SPJ13

Newton’s first law of motion states that "an object at rest will stay at rest, and an object in motion will stay in motion, unless acted on by an unbalanced force.

It is possible to consider Newton's first law to be the law of inertia. It helped us realise that when a body is at rest, it will remain at rest until an external force is applied to it, or if a body is travelling at a constant speed, it will stay moving until an external force is applied.

Only when net force is applied will a body move from its resting position. An illustration of this law can be seen when a passenger in a car fastens their seat belt. Both stationary and moving objects are covered by this law.

Learn more about force:

https://brainly.com/question/25239010

#SPJ4

The magnitude of the force of friction acting on the block is 1.6 N. So, the correct answer is option 4.

This can be estimated using the formula Ff = μmgcosθ, where Ff is the frictional force, μ is the frictional coefficient, m is the mass of the block, g is the acceleration brought on by gravity, and is the inclined plane's angle.

Substituting the given values, Ff = 0.2 × 1 × 9.8 × cos(22) = 1.6 N.

To maintain equilibrium, the block must be able to resist the force of 7 N being imparted to it by friction.

This is so that the block wouldn't need any external force to accelerate down the hill if there were no friction.

The frictional force also contributes to the block's acceleration of 1.4 m/s², as the force needed to accelerate the block must be greater than the frictional force.

Complete Question:

A 1.0-kg block is pushed up a rough 22° inclined plane by a force of 7.0 N acting parallel to the incline. The acceleration of the block is 1.4 m/s² up the incline. Determine the magnitude of the force of friction acting on the block.

1) 1.9 N

2) 2.2 N

3) 1.3 N

4) 1.6 N

5) 3.3 N

To learn more about magnitude visit:

https://brainly.com/question/30337362

#SPJ4

It is accurate to say that infrared energy, conduction to air later rising in convection, and evaporation are the processes in which the heat energy so produced exits the surface of land masses.

Fluid or gas particles are frequently moved by convection currents. These are produced as a result of variations in a particular gas or fluid's density and temperature. One of the two ways to transmit heat is through convection; the other two are through radiation and conduction. Only fluids, such as liquids and gases, undergo the convection process. This occurs because molecules within liquids and gases are free to move.

The difference in temperature between the two portions of the fluid can cause the convection process, which transfers heat energy. This temperature differential causes hot fluids to have a tendency to ascend while cold fluids have a tendency to sink.

The correct question is:

Which are ways in which heat energy leaves the surface of land masses? Select the three correct answers.(2 points)

a).evaporation

b).glacial motion

c).animal activity

d).conduction to air, which then rises in convection

e).plant growth

f).radiation of infrared energy

Learn more about convection here:

https://brainly.com/question/29848193

#SPJ4

Answer:

10 floors

Explanation:

We are told that a bell of mass 20 kg is atop a tower and has 8829 J of gravitational energy. The question asks us to estimate the number of floors the tower has.

To do this, we must first calculate how high above the ground the bell is. We can do that using the formula for gravitational potential energy:

\(\boxed{g.p.e = mgh}\),

where:

• g.p.e = gravitational potential energy (8829 J)

• m = mass of object (20 kg)

• g = acceleration due to gravity (approximately 10 m/s²)

• h = height of object above ground (? m).

Using the above information and formula, we can solve for h:

g.p.e = \(20 \times 10 \times h = 8829\)

       ⇒ \(200 h = 8829\)

       ⇒ \(h = \frac{8829}{200}\)

       ⇒ \(h = \bf 44.145 \ m\)

Therefore the bell is 44.145 m above the ground, which means that the height of the tower is also 44.145 m.

One floor of a building can be estimated to be around 4.3 m, therefore the number of floors the tower has is:

44.145 ÷ 4.3

≈ 10

Therefore there are 10 floors in the tower.

Answer:

has proven had proved proved no change

Answer:

I believe it's the second option "has proven"

Explanation:

It just sounds like it fits better.

Sorry if it's wrong btw.

If an object is moving along a straight line at a constant speed of 20 meters/second, then the object travels 80 meters during the first four seconds.

The total distance covered by any object per unit of time is known as speed. It depends only on the magnitude of the moving object.

As given in the problem we have to find out the distance traveled in the first four seconds when If an object is moving along a straight line at a constant speed of 20 meters/second,

The total distance traveled by the object = speed of the object×time

                                                                    =20 meters/second×4 seconds

                                                                    =80 meters

Thus, the correct answer is option D.

Learn more about speed from here, refer to the link;

https://brainly.com/question/7359669

#SPJ2

Answer:

The particles have more distance in them which impacts the density.

Explanation:

A solid's particles are much more closer together than that of a liquid's particles. Same thing goes for gas particles(they are much more far apart than liquid particles). This is why solids usually are more denser than liquids and gas, due to the way their particles are structured. Hope this helps!

Answer:

T = 2.28 s

Explanation:

Given that,

The radius of the wheel, r = 0.4 m

The tangential velocity of the wheel, v = 1.1 m/s

We need to find the period of the ball as it travels around the wheel. Let it is T. We know that, the tangential speed is given by :

\(v=\dfrac{2\pi r}{T}\\\\T=\dfrac{2\pi r}{v}\\\\T=\dfrac{2\pi \times 0.4}{1.1}\\\\T=2.28\ s\)

So, the period of the ball is equal to 2.28 s.

The mass of an alpha particle greater than the mass of an electron. Hence option A is correct.

The alpha particle is a positively charged particle that is similar to the nucleus of the helium-4 atom and is spontaneously released by some radioactive substances. It is made up of two protons and two neutrons bonded together and has a mass of four units and a positive charge of two. Ernest Rutherford discovered and named alpha particles (1899), which he and colleagues employed in studies to examine the structure of atoms in thin metallic foils. This investigation produced in the original notion of the atom (1909-11) as a miniature planetary system with negatively charged particles (electrons) circling a positively charged nucleus. Later, in the first artificially created nuclear transmutation (1925), Patrick Blackett blasted nitrogen with alpha particles, converting it to oxygen.

Alpha particle is heavier than the electron cause alpha particle has 2 neutron and two protons which makes it heavier.

Hence option A is correct.

To know more about electron :

https://brainly.com/question/1255220

#SPJ2.

Answer:

1) Used in optical instruments such as telescopes.

2) Used to form mirages

Explanation:

1) Perhaps the simplest example of this is the astronomical refractor telescope with a right-angle eyepiece holder. Astro scopes mostly point at things high in the sky, but it is inconvenient to place your eye low to look up through the scope, so the light path is bent 90 degrees just before the eyepiece. This can be done with a mirror, but using a simple 45 degree prism (internal angles 45, 45, and 90 degrees) will do the 90 degree bend more efficiently.

2) So when a light pass from cold air to hot air light tends to bend from its path which is known as refraction. As the light get refracted it reaches to a point where the light tends to form 90 degree angle.

According to the question the impulse on the object is zero.

To calculate the impulse on the object, we need to integrate the force over the given time interval. Impulse is defined as the change in momentum, and it can be calculated by integrating the force with respect to time.
Given the force equation F = 4 sin (100πt) N and the time interval from t = 0 to t = 10 ms (or t = 0 to t = 0.01 s), we can calculate the impulse as follows:
Impulse = ∫F dt
Impulse = ∫(4 sin (100πt)) dt
To evaluate this integral, we can use the antiderivative of the sine function, which is -cos(100πt) / (100π). Evaluating the integral over the given time interval:
Impulse = [-cos(100πt) / (100π)] from 0 to 0.01
Impulse = [-cos(100π * 0.01) / (100π)] - [-cos(100π * 0) / (100π)]
Simplifying further:
Impulse = [-cos(π) / (100π)] - [-cos(0) / (100π)]
Since cos(π) = -1 and cos(0) = 1, we have:
Impulse = [-(-1) / (100π)] - [1 / (100π)]
Impulse = [1 / (100π)] - [1 / (100π)]
Impulse = 0
Therefore, the impulse on the object is zero.

To learn more about impulse
https://brainly.com/question/30395939
#SPJ11

We have that the velocity of the ball when it hits the glass.Using the appropriate significant figures is

V=4.43ft/s

From the question we are told that

Generally the equation for the Velocity  is mathematically given as

\(V^2=2as\\\\Therefore\\\\V=\sqrt{2*9.8*1}\\\\V=4.43ft/s\)

Therefore

the velocity of the ball when it hits the glass.Using the appropriate significant figures is

V=4.43ft/s

For more information on this visit

https://brainly.com/question/23379286?referrer=searchResults