What will be the key difference in the energy of the particles in iron at 250 K and 500 K?
Please don't joke ​

Answer:

2.6 seconds

Explanation:

You have to divide the distance by the velocity to find the time:

46/18 = 2.55 ≈ 2.6 seconds

The answer you are looking for is approximately 2.6 seconds.

Solution/Explanation:

To get the correct answer, you must divide the distance and velocity.

This means that 46÷18=2.5556.

2.5556≈2.6.

So, therefore, the final answer is approximately 2.6 seconds.

I hope that this has helped you. Enjoy your day, and take care.

Answer:

True

Explanation:

Answer:

Explanation:

The speed of sound is very high . It is about 340 m /s . In one echo , it takes approximately

2 x 100 / 340

= .6 sec

In 10 simultaneous echo , it will take 6 s . It is difficult to measure .6 sec but to measure 6 s is easy and it can be made with greater precision , so we can calculate velocity of sound with great precision .

This is the reason why , instead of one echo , 10 echos are made and duration of 10 echo is measured , rather than making one echo and measuring time of one echo .  

Ferromagnetic material :The substances which have permanent magnetic moments and are strongly attracted to magnets.

The substances which have permanent magnetic moments and are strongly attracted to magnets are known as ferromagnetic materials. These materials exhibit a strong response to magnetic fields and can become magnetized themselves. They are characterized by a high magnetic permeability and retain their magnetization even after the external magnetic field is removed.

Ferromagnetic materials are composed of tiny regions called domains, which consist of aligned magnetic moments. In the absence of an external magnetic field, the domains may have random orientations, resulting in a net magnetization of zero. However, when an external magnetic field is applied, the domains align themselves in the direction of the field, leading to a macroscopic magnetization of the material.

One of the key properties of ferromagnetic materials is hysteresis, which refers to their ability to retain some degree of magnetization even when the external magnetic field is removed. This property allows them to be used for the creation of permanent magnets. Common examples of ferromagnetic materials include iron, nickel, cobalt, and certain alloys such as steel.

The strong attraction of ferromagnetic materials to magnets makes them useful in various applications. They are widely employed in the production of electric motors, transformers, generators, magnetic storage devices (such as hard drives), and magnetic sensors. The unique properties of ferromagnetic materials have significant implications in the fields of electromagnetism, materials science, and technology.

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If the motorcyclist applies the front brake too hard, the front brake can lock up and skid, Option b is correct.

When a motorcyclist applies the front brake too hard, the front wheel can lock up and skid, causing the rider to lose control of the motorcycle. This happens because the front brake is responsible for most of the motorcycle's stopping power, and if it is applied too forcefully, the wheel can stop rotating altogether.

It is essential for motorcyclists to be aware of proper braking techniques and to apply the brakes smoothly and evenly to avoid skidding and accidents. Hence option b is correct choice.

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The initial speed of the ball was approximately 39 m/s

We can use the kinematic equations of motion to solve for the initial speed of the ball. Since the ball is thrown at an angle of 45° to the ground, we know that its initial vertical velocity is equal to its initial horizontal velocity. We can use this fact to break down the initial velocity vector into its horizontal and vertical components.

Let's use the following variables:

v0: initial speed of the ball

θ: angle of the ball's initial velocity (45° in this case)

d: distance the ball travels (81 m in this case)

g: acceleration due to gravity (9.8 m/s^2)

Using the kinematic equation for the horizontal distance traveled by an object, we have:

\(d = v0*cos(θ)*t\)

where t is the time it takes for the ball to travel the distance d. Since the ball is thrown at 45°, we have:

\(cos(45°) = √2/2\)

Substituting this into the equation above, we get:

d = v0*(√2/2)*t

Using the kinematic equation for the vertical displacement of an object, we have:

\(y = v0*sin(θ)*t - (1/2)gt^2\)

where y is the maximum height reached by the ball. Since the ball is thrown at 45°, we have:

sin(45°) = √2/2

Substituting this into the equation above, we get:

y = (v0*√2/2)\(*t - (1/2)gt^2\)

Since the ball is thrown at an angle of 45°, the time it takes for the ball to reach its maximum height is equal to half the total time of flight. Therefore, we can express t in terms of d and v0 as:

t = d / (v0*cos(θ))

Substituting this expression for t into the equation for y, we get:

y = (v0√2/2)(d / (v0cos(θ))) - (1/2)g(d / (v0cos(θ)))\(^2\)

Simplifying, we get:

y = (dsin(θ)√2)/(2cos\(^2(θ)) - (gd^2)/(2v0^2cos^2\)(θ))

Since we want to find v0, we can rearrange this equation to isolate v0:

v0 = √((gd\(^2)/(2ycos^2(θ)) - (d^2)/(4cos^4(\)θ)))

Plugging in the given values, we get:

v0 = √((9.8 m/\(s^2)(81 m)^2 / (2(0 m)(cos^2(45°))) - (81 m)^2 / (4(cos^4(\)45°))))

v0 ≈ 39 m/s

Therefore, the initial speed of the ball was approximately 39 m/s.

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Answer:

6m/s

Explanation:

a = (v-u)/t

acceleration, a

initial velocity, u

final velocity, v

time, t

substitute values and you'll get the answer

Answer:

6 m/s

Explanation:

Answer:

A.) 42.7 m/s

B.) 0.33 m/s^2

C.) 90 kg

Explanation:

A.) If Justin races his Chevy S-10 down highway 37 north for 2,560 meters in 60 seconds, what is his velocity? 

Velocity = displacement/time

Velocity = 2560/60

Velocity = 42.67 m/s

B.) The Chevy S-10 started rounding at 10 meters per hour. What is the acceleration at 30 seconds on the highway?

Acceleration = velocity/time

Acceleration = 10/30

Acceleration = 0.33 m/s^2

C.) The S-10 has a force of 30 N. What is the mass of the car?

Force = mass × acceleration

30 = mass × 0.33

Mass = 30/ 0.33

Mass = 90 kg

The phenomenon called atomic contraction is responsible for the great similarity in atomic size and chemistry of 4d and 5d transition elements. The phenomenon responsible for the similarity in atomic size and chemistry of 4d and 5d elements is known as the "lanthanide contraction".

This is because the lanthanide series (4f transition elements) have a filled 4f subshell, which shields the outer electrons from the nuclear charge, resulting in an increase in atomic radius. However, when moving across the transition series (4d and 5d elements), there is a decrease in atomic radius due to the increasing nuclear charge, which is partially offset by the shielding effect of the 4d and 5d electrons. This contraction results in the 4d and 5d elements having similar atomic radii and chemical properties.

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Answer:

force gravitational attraction =18.69×10^-14

hope it helps.

Answer:

all of the above.Explanation:

Answer:

im not sure but i think b. cannot withstand the pressure...

if not all the above.

Explanation:

The vertical component of the force vector 42 N is 7.29 N and the  that of the vector B is 26 N. Then the resultant vector is 18.71 N. The equilibrant is the same but opposite in direction ie., - 18.71.

Vectors are physical quantities having both magnitude and direction. The quantities with magnitude only are called scalar quantities. Force, work done, displacement , momentum etc are vector quantities.

The resultant of two vectors depends on their magnitude and direction. The given two vectors A and B are in opposite directions. Hence, the resultant vector will be their difference in magnitude.

Vertical component of vector A = 42 cos 80 = 7.29 N

component of vector B = 34 cos 40 = 26 N.

Then, resultant vector = 26 N - 7.29 N = 18.71 N

equilibrant = - 18.7 N.

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Answer:

\(Q=-38.15kJ\)

Explanation:

From the question we are told that

Piston-cylinder initial Volume of air \(v_1=0.1 m^3\)

Piston-cylinder initial temperature \(T_1=400k\)

Piston-cylinder initial pressure \(P_1= 100kpa\)

Supply line temperature\(T_s=400k\)

Supply line pressure \(P_s= 500kpa\)

Valve  final pressure \(P_v=500kpa\)

Piston movement pressure \(P_m=200kpa\)

Piston-cylinder final Volume of air\(v_2=0.2 m^3\)

Piston-cylinder final temperature \(T_2=440k\)

Piston-cylinder final pressure \(P_2= 500kpa\)

Generally the  equation for conservation of mass is mathematically given by

\(Q=m_2 \mu_2-m_1 \mu_1 +W-(m_2-m_1)h\)

where

Initial moment

\(m_1=\frac{p_1 V_1}{RT_1}\)

\(m_1=\frac{100*0.1}{0.287*400}\)

\(m_1=8.7*10^-^2kg\)

Final moment

\(m_2=\frac{p_2 V_2}{RT_2}\)

\(m_1=\frac{500*0.3}{0.287*440}\)

\(m_1=79*10^{-2}kg\)

Work done by Piston movement pressure

\(W=Pd\)

\(W=P(v_2-v_1)\)

\(W=200(0.2-0.1))\)

\(W=20000J\)

Heat function

\(h=cT_1\)

\(h=1.005(400)\)

\(h=402\)

Therefore

\(Q=(0.792*0.718(440)-0.0871*0.718(400)+20-(0.792-0.087)*402))\)

\(Q=-38.15kJ\)

It is given mathematically that the system lost  or dissipated Heat of

\(Q=-38.15kJ\)

The initial configuration consists of two identical conducting spheres separated by a distance of 50.0 cm. The spheres experience an attractive electrostatic force of 0.108 N is \(1.33*10^{-8} C\)

After connecting the spheres with a conducting wire and then removing it, they experience a repulsive electrostatic force of 0.0360 N. The total charge of the system is positive. The question seeks to determine the negative charge on one sphere and the positive charge on the other.

To solve for the charges on the spheres, we can use the concept of electrostatic force and Coulomb's law. Initially, the spheres experience an attractive force, indicating opposite charges. Let's assume one sphere has a negative charge and the other has a positive charge.

Using Coulomb's law, we can calculate the magnitude of the initial force: \(F = k * (q1 * q2) / r^2\), where F is the force, k is the electrostatic constant, q1 and q2 are the charges, and r is the distance between the spheres. Since the spheres are identical, their charges can be represented as q and -q, respectively.

\(0.0360 N = (9 * 10^9 N*m^2/C^2) * (q1 * q2) / (0.50 m)^2q1q2 = (0.0360 N * (0.50 m)^2) / (9 * 10^9 Nm^2/C^2) = 4.0 * 10^8 C^2\)

\(1.33*10^{-8} C\)

By substituting the given values into the equation and solving for q, we can determine the negative charge on one sphere. Similarly, after connecting the spheres with a wire and removing it, they experience a repulsive force. This indicates that the charges have become the same on both spheres. Therefore, the positive charge on the other sphere can be determined as +q.

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Answer:

157.5 KJ

Explanation:of

Specific heat capacity of steel is 450 J/ kg-°C.

So to raise temperature of 3.5 kg of steel from 500°C to 600°C is

= ( 450 * 3.5 * ( 600-500 ) )

= 157500

Answer:

The answer to your question is more force

Explanation:

A consequence of more mass having more inertia is that more force is required to bring the helicopter to the same speed as the bullet

I hope this helps and have a good day!

Answer:

1.A

2.C

3.B

4. i.dk about that one

Explanation:

1. It is true that Tracking your exercise can help you stick with an exercise routine.

2. Yes, it is best to do as many different kinds of exercise as possible.

3. Building muscle strength helps with all aspects of fitness

4. Yoga would be the best exercise to achieve this goal.

Exercise is any activity that utilizes the physical movements of the body that improves a people's health, endurance, and wellbeing while lowering their chance of contracting illnesses. It enables the person to keep their body weight in a healthy weight range.

The benefits of fitness fluctuate depending on the sort of dying a person experiences. Even if a muscle is stretched, excessive sitting can cause a number of illnesses, many of which are fatal. The individual should engage in mobility activities as well as exercising to improve their stamina.

Thus, exercise is very necessary for health.

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Answer:

17.3 miles

Explanation:

Answer:

Here, the acceleration of shingles is a=g=9.8m/s2, Initial velocity of it is u=0m/s and distance traveled S=8.52mLet t be the required time for the shingles to reach ground. Using formula S=ut+at2/2we get,  8.52=0(t)+0.5(9.8)t2⟹ t=1.32s

Answer:

4.44m/s

Explanation:

Average speed is the total distance covered within a given period of time.

From the quantities given;

Number of laps  = 4 laps

Length of each lap  = 400m

Time taken to complete race  = 6minutes

Unknown:

Average speed  = ?

Solution:

 Her average speed is given as:

      Average speed  = \(\frac{number of laps x length of lap}{time}\)

We need to convert time to seconds;

         60s  = 1 min;

        6 minute = 60 x 6  = 360s

  Average speed  = \(\frac{4 x 400}{360}\)   = 4.44m/s

Answer:

speed described how fast the object moves velocity describes how fast and in what direction its moved..

Answer:

Landforms affect where people build houses and communities. Many people live on plains because it is easy to travel and to farm on flat land. Other people live in valleys, which are the land between mountains or hills. The soil in valleys is good for farming.

Answer: lake

Explanation: it would almost always be cool. And cool things are inside!

The physical properties cause an object to resinate shape,composition, and length. Therefore, option A is correct.

A physical property is a characteristic of matter that can be observed and measured without changing a sample's chemical identity. The measurement of a physical property may alter the arrangement of matter in a sample, but not its molecule structure.

An extensive property is one that is affected by the amount of matter in a sample. Mass and volume are two examples of extensive properties.

There are physical properties of matter that are proportional to its quantity or size, such as length, mass, volume, weight, and so on. As the size or quantity of matter changes, so do these properties and their values.

Thus, option A is correct.

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Answer:

Reaction force = Weight

the force exerted by A on B is equal.

M1a = M2a  

Explanation: I think the answer is right if wrong message me.

Answer:

C. gases

Explanation:

I don't really know how to explain it work is just typically done by gases. Plus this is the correct answer for a p e .x

Answer:

The energy an object has due to its motion is called kinetic energy

Explanation:

Factors Affecting Kinetic Energy: the kinetic energy of an object depends on both its speed and its mass.

Answer:

kinetic energy

Explanation:

In physics, the kinetic energy (KE) of an object is the energy that it possesses due to its motion. It is defined as the work needed to accelerate a body of a given mass from rest to its stated velocity. Having gained this energy during its acceleration, the body maintains this kinetic energy unless its speed changes. The same amount of work is done by the body when decelerating from its current speed to a state of rest.

Answer: 1.25 m/s²

Explanation:

The force acting on the block, F = 40 N

The acceleration of the block, a = 2.5 m/s²

The mass of the first block, m1 = unknown

The mass of the second block, m2 = 4.0 kg

From the equation F = ma, we know that the force is equal to the product of mass and acceleration.

For the first block:

F = m1a

40 N = m1 x 2.5 m/s²

m1 = 16 kg

Now we can find the total mass of the system:

m_total = m1 + m2

m_total = 16 kg + 4 kg

m_total = 20 kg

The force continues to act on the combined blocks with a total mass of 20 kg, so we can use the equation F = ma again to find the acceleration of the combined blocks:

F = m_total x a

40 N = 20 kg x a

a = 40 N / 20 kg

a = 2 m/s²

Therefore, the magnitude of the acceleration of the combination of blocks is 1.25 m/s².

The force acting on the block, F= 40 N

The mass of the first block, m1= x

The mass of the second block,m2= 4kg

From the equation F= ma, we know that the force= m*a

The acceleration speed of the block a= 2.5m/s

For the first block:

F= M*A

40 N= m1*2.5m/s

m1= 16 kg

Now we can easily find the total mass of the body:

m_total= m1+m2

m_total= 16+4

m_total= 20kg

The force continues to act on the combined blocks with a total mass of 20kg. Hence, we can use F= M*A to find the acceleration of combined blocks:

40 N= 20 kg * a

a= 40 N/20 kg

a= 2m/s

Hence, the combined magnitude of the acceleration of blocks will be 1.25m/s.

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Answer:

D. A followed by B

Explanation:

You can see at section A solid Ice at temperature 0°C gets heated up for and all the energy generated from heating up the ice is used to break the bonds which holds the ice together as a solid .

while at Section B the liquid water at 100°C changes to vapor because the heat energy applied here breaks intermolecular bonds c.

The section where A is followed by C of the heating curve illustrate this process. The correct option is D.

The heating curve represents the association between the supply temperature of the heating system and the external air temperature.

As can be seen in section A reliable Ice at 0°C is heated, and all of the energy generated by heating the ice is used to shatter the bonds that hold the ice together as a solid.

While in Section B, liquid water at 100°C transforms to vapor because the heat energy applied here shatters the intermolecular bonds c.

Thus, the correct option is D.

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