what does boiling point mean?

Answer:

Explanation:

k.e=1/2mv^2

3450=1/2*60v^2

6900=60v^2

115=v^2

v=underradical115

If an object moving with 3450 J of kinetic energy if its mass is 60k kg, its velocity will be 10.7 m/s.

Kinetic energy is the energy associated with a motion of a body. When a body is in motion having mass m then it has kinetic energy. Kinetic energy is denoted by K or T. it is expressed in joules. Kinetic energy is given by,

K = 1/2 mv²

Hence an object having zero mass or zero velocity have zero kinetic energy.

In this problem we have an object having kinetic energy 3450J and mass 60 Kg.

Given,

mass m = 60 kg

Kinetic energy = 3450 J

velocity v = ?

K = 1/2 mv²

3450 = 1/2 60*v²

6900/60 = v²

v² = 115

v = 10.7 m/s

Hence velocity of this object is 10.7 m/s.

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Explanation:

R1=R2=R3=R4=10 ohms

V=IR

V=2.10

V=20v

Answer:

kgm/s(-1)

Explanation:

the units of momentum will be the product of the units of mass and velocity. Mass is measured in kg and velocity in ms-1, therefore, the SI unit of momentum will be kgm/s(-1).

Answer:C

Explanation:

If you are holding the ball that would be the ball would have potential energy since it it not moving. Once you drop the ball it will have kinetic energy since it’s moving. If you drop the ball from 6ft it will have more kinetic since it will have more time to accelerate. If you drop the ball from 2ft then it will have less kinetic energy since it is closer to the ground and won’t have beeping time to accelerate and get rid of the potential energy.

Answer:

c

Explanation:

Answer:

A or B you choose

Explanation:

This is called current electricity or an electric current. A lightning bolt is one example of an electric current, although it does not last very long. Electric currents are also involved in powering all the electrical appliances that you use, from washing machines to flashlights and from telephones to MP3 players.

what is an electrical current, amp, ampere Current is the flow of electrons. When a circuit is closed then a current of electrons can flow and when a circuit is open then no current can flow. We can measure the flow of electrons just like you can measure the flow of water through a pipe.

High energetic winds turning generator , causing electrons to flow into power lines is an example of current electricity. Remaining all are examples of static electricity .

The movement of electrons from one area of the circuit to another is referred to as current electricity. Free electrons flow between two points when two bodies with different potentials are connected by a wire, until both objects reach the same potential, at which point the current stops.

Current flows until a potential difference exists throughout the conductor. The following techniques can be used to produce current electricity:

1. Through the passage of a metal wire through a magnetic field (Both alternating current and direct current can be generated by the following method)

2.Utilizing a battery and chemical reactions (Direct current can be generated through this method)

Here, the wind's kinetic energy provide the mechanical energy for the generator to to produce power lines. Hence option A is correct. All others are static electricity for short time only.

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48 m/s in terms of km/h is 720.8 km/h. In terms of m/min is 2880 m/min, in terms of km/s is 0.048 km/s and in terms of km/min is 2.88 km/min.

To solve this question, we need to understand some terms. The unit of velocity is measured in m/s. It can be expressed in different units of velocity.

1 km (kilometer) = 1000 meter

1 h (hour) = 3600 seconds

1 minutes = 60 seconds

To convert m/s into km/h,

48 m/s * 3600/1000 =  172.8 km/h

To convert m/s into m/min,

48 m/s * 60 = 2880 m/min

To convert m/s into km/s,

48 m/s ÷ 1000 = 0.048 km/s

To convert m/s into km/minutes,

48 m/s * 60 / 1000 = 2.88 km/min

Therefore, the 48 m/s expressed is 172.8 km/h, 2880 m/min, 0.048 km/s and 2.88 km/min.

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48 m/s is equivalent to  172.8 km/h, 2880 m/min, 0.048 km/s, and 2.88 km/minute.

To express 48 m/s in different units of velocity:

km/h (kilometers per hour):

To convert m/s to km/h, we can use the conversion factor of 3.6 since 1 m/s is equal to 3.6 km/h.

48 m/s * (3.6 km/h / 1 m/s) = 172.8 km/h

Therefore, 48 m/s is equivalent to 172.8 km/h.

m/min (meters per minute):

To convert m/s to m/min, we can use the conversion factor of 60 since there are 60 seconds in a minute.

48 m/s * (60 m/min / 1 s) = 2880 m/min

Therefore, 48 m/s is equivalent to 2880 m/min.

km/s (kilometers per second):

Since 1 kilometer is equal to 1000 meters, to convert m/s to km/s, we divide the value by 1000.

48 m/s / 1000 = 0.048 km/s

Therefore, 48 m/s is equivalent to 0.048 km/s.

km/minute (kilometers per minute):

To convert m/s to km/minute, we first need to convert m/s to km/s (as calculated in the previous step) and then multiply by 60 to convert seconds to minutes.

0.048 km/s * 60 = 2.88 km/minute

So, 48 m/s is equivalent to 2.88 km/minute.

Hence, 48 m/s is equivalent to approximately 172.8 km/h, 2880 m/min, 0.048 km/s, and 2.88 km/minute.

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The force that causes the protons in an atom to be attracted to one another is Strong nuclear.

Nuclear force is a force that acts between the protons and neutrons of atoms.

Neutrons and protons, both nucleons, are affected by the nuclear force almost identically and it is responsible for the attraction of protons in an atoms.

Thus, the force that causes the protons in an atom to be attracted to one another is Strong nuclear.

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The deceleration of the car is observed as 2 m/s^2.

The term deceleration has to do with the decrease of velocity with time.

Given that;

v = 65 km/h or 18 m/s

u = 126 km/h to or 35 m/s

t = 8.5 s

a = ?

v = u - at

18 - 35 = -8.5a

a = 18 - 35/-8.5

a = 2 m/s^2

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The aardvark have traveled total after the 30 seconds of acceleration, d₂ = 2300 m.

To find distance of aardvark use the formula,

d₂ = d₁ + vo t + 1/2 a t²      

Where,

d₂ is final distance        

d₁ is original distance      

vo is original velocity

t is time

Given data,

d₁ = 50 m

vo = 30 m/s

t = 30 s

d₂ = ?

Putting values,

d₂ = 50m + 30 m/s (30s) + 1/2 (3m/s²) x 30²

d₂ = 2300 m

Acceleration is the rate of change in both speed and direction of velocity over time. When something moves faster or slower in a straight line, it is said to have been accelerated. Because the direction is constantly shifting, motion on a circle accelerates even when the speed is constant.

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The force exerted on the ladder by the floor is 55.18 N.

To calculate the force exerted on the ladder by the floor, we need to consider the forces acting on the ladder. There are two forces acting on the ladder, namely, the gravitational force and the normal force from the floor.

The gravitational force can be calculated using the formula \(F\_gravity = m * g\), where m is the mass of the ladder and g is the acceleration due to gravity, which is 9.81 m/s^2. Thus, the gravitational force acting on the ladder is \(F\_gravity = 25.0 kg * 9.81 m/s^2 = 245.25 N\).

The normal force from the floor can be calculated using the formula \(F\_normal = F\_gravity * cos(theta)\), where theta is the angle between the ladder and the floor. Thus, the normal force from the floor is \(F\_normal = 245.25 N * cos(60) = 122.62 N.\)

To calculate the force exerted on the ladder by the floor, we need to determine if the ladder will slip or not.

Since the coefficient of static friction between the ladder and the floor is given to be 0.45, we can calculate the maximum force that can be exerted on the ladder without causing it to slip using the formula F_friction = friction coefficient * F_normal.

Thus, the maximum force that can be exerted on the ladder without causing it to slip is\(F\_friction = 0.45 * 122.62 N = 55.18 N\).

Since the force exerted on the ladder by the floor cannot exceed the maximum force of 55.18 N, we can conclude that the force exerted on the ladder by the floor is 55.18 N.

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Answer:

oxygen combines with small molecules. energy is released and it happens in the cytoplasm

Explanation:

Answer:

B,C,D are the correct answers i just did it one edge for the unit review.

Explanation:

The statement "A point charge +Q is fixed on a very large horizontal friction less tabletop. A second point charge +q is released from rest near the stationary charge and is free to move" is correct because When the second charge, +q, is released near the stationary charge +Q, it experiences an electrostatic force due to the interaction between the charges. According to Coulomb's law, the electrostatic force between two point charges is directly proportional to the product of their charges and inversely proportional to the square of the distance between them.So option 2 is correct.

Initially, when +q is released, it experiences a force of attraction towards +Q due to the opposite charges. This force accelerates +q in the direction of +Q. As +q moves away from +Q, the distance between them increases, and according to Coulomb's law, the force between them decreases because the inverse square law causes the force to weaken with distance.

However, the acceleration of +q increases as it moves farther away because the force acting on it is inversely proportional to its distance from +Q. Since the force is decreasing with distance at a slower rate than the distance is increasing, the acceleration keeps increasing.

Therefore, statement 2) is the most accurate description of the motion of +q after it is released.



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The height (y) of the pistol is 94 meters. To explain, we can use the fact that the horizontal and vertical motions are independent of each other.

To explain, we can use the fact that the horizontal and vertical motions are independent of each other. Since the bullet is fired horizontally, its initial vertical velocity is zero. We can use the equation for vertical motion:

\(y = (1/2)gt^2\)

where y is the vertical displacement, g is the acceleration due to gravity (approximately 9.8 m/s^2), and t is the time of flight.

The time of flight can be calculated using the horizontal distance and the horizontal velocity:

\(t = d/v\)

where d is the horizontal distance (196 m) and v is the horizontal velocity (356 m/s).

Substituting the values, we get:

\(t = 196 m / 356 m/s ≈ 0.551 seconds\)

Plugging this value into the equation for vertical motion, we find:

y = (1/2)(9.8 m/s^2)(0.551 s)^2 ≈ 94 meters.

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Before the cannon ball is in the air this force is basically:

And the force of the explosion is:

After this force is applied to the cannonball after being shooted;

So, the force of the cannonball only depends on the acceleration of gravity.

Therefre, tehe statement is False

Answer:

The blood cell will expand.

Explanation:

Given that,

Salt concentration = 0.5M

Solution concentration = 2M

We know that,

Hypertonic solution :

If the solution concentration is lower than the solute concentration then it is called hypertonic solution.

Hypotonic solution :  

If the solution concentration is higher than the solute concentration then it is called hypotonic solution.

We need to find what will happen to the blood cell

Using given data

The solution concentration is higher than the solute concentration.

So, The solution will be hypotonic solution.

We know that,

When a cell is placed in a hypotonic solution then the water will enter the cell, and the cell will expand.

Hence, The blood cell will expand.

Answer:

The blood cell will expand.

Explanation:

Just took a test.

{Hope this helps} : )

Answer:

The combination of cells in which the negative terminal of a first cell is connected with the positive terminal of second cell and the negative terminal of a second cell is connected to the positive terminal of a third cell and so on is known as series combination of cells.

Explanation:

hope this helps to u

Answer:

Battery.

Answer:

539.55 N for both

Explanation:

F=ma

Mass is given at 55kg

And when finding gravitational force gravity's constant is an acceleration of 9.81m/s

F=(55)(9.81)

F= 539.55 N (for both)

Normal force cancels out gravitational force that's why we don't fall throught the floor.

We push down on the floor due to gravitational force but normal force keeps us upright pushing an equal amount back.

Answer:

Explanation:

I dont understand what its saying .....?

(a) The spring constant is 500 N/m.

(b) The extension of the spring when 25 N force is applied is 0.05 m.

(c) The applied force to cause an extension of 5 mm is 2.5 N.

The given parameters:

The spring constant is calculated as follows;

\(F = kx\\\\k = \frac{F}{x} \\\\k = \frac{10}{20 \times 10^{-3}} \\\\k = 500 \ N/m\)

The extension of the spring when 25 N force is applied is calculated as follows;

\(F = kx\\\\x = \frac{F}{k} \\\\x = \frac{25}{500} \\\\x = 0.05 \ m\)

The applied force to cause an extension of 5 mm is calculated as follows;

\(F = kx\\\\F = 500 \times 5 \times 10^{-3}\\\\F = 2.5 \ N\)

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The source of protons that are pumped out of the mitochondrial matrix in Stage 1 of oxidative phosphorylation is NADH (A).

During Stage 1, electrons from NADH are passed through the electron transport chain (ETC) and this process results in the pumping of protons across the inner mitochondrial membrane from the matrix to the intermembrane space. This proton gradient is then used by ATP synthase to generate ATP during Stage 2 of oxidative phosphorylation.

FADH can also donate electrons to the ETC, but it does not contribute as many protons to the gradient as NADH. H₂O and H₂S are not involved in the electron transport chain or the proton pumping process during oxidative phosphorylation. Understanding the role of NADH and FADH in the electron transport chain is crucial to understanding how cells generate ATP, the primary energy currency of the cell. Hence, the correct answer is Option A.

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If you did not catch the Sipa with your foot, it is likely that it would fall to the ground because of gravity

Sipa is a traditional Filipino game played with a small ball made of rattan or other materials, and players typically use their feet, knees, or other body parts to keep the ball in the air.

If you did not catch the Sipa with your foot, it is likely that it would fall to the ground. The trajectory and speed of the fall would depend on various factors such as the height from which it was dropped, the force of gravity, and any air resistance present. However, the ball's shape and weight distribution might allow it to bounce or roll in unpredictable directions, so it could be difficult to predict exactly where it would land.

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Answer:A

Explanation:

Answer: A)The speed of light in a vacuum is constant, and nothing is faster than the speed of light.

Explanation:

Answered Correctly on Edg.

A bar magnet is called an artificial permanent magnet because it is made by humans and exhibits permanent magnetism.

The term "artificial" refers to the fact that it is created through human intervention rather than occurring naturally. Bar magnets are typically manufactured by aligning magnetic materials, such as iron or steel, in a specific manner to induce magnetism. This involves exposing the materials to a strong magnetic field or subjecting them to a process called magnetization. The term "permanent" signifies that the magnet retains its magnetic properties even after the external magnetic field used for its creation is removed. The alignment of magnetic domains within the material causes the bar magnet to have a stable magnetic field that persists over time. Thus, the combination of being human-made and possessing lasting magnetism qualifies the bar magnet as an artificial permanent magnet.

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A parallel circuit is described as a type of circuit in which there are several current paths.

A parallel circuit is a type of electrical circuit where two or more components are connected in parallel, and each component has its path for electric current flow. The path is separate from all other parts, and each has the same voltage level. The current divides among each path according to the resistance value of the components in the circuit. Parallel circuits are used in various applications, including lighting in households, street lights, and other electronic devices. In a parallel circuit, the voltage across each component is the same, and the total current in the circuit is equal to the sum of the current flowing in each branch.

A parallel circuit is used in the household and other applications to prevent other electrical devices from overloading and cutting off electrical supply, for example, when several devices are plugged into a power source. In a parallel circuit, the voltage divider circuit can be used to divide the voltage among resistors. This is because the voltage across each component in a parallel circuit is the same, and we can use the equation V = IR to calculate the voltage divider.

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The special theory of relativity predicts that fast-moving objects will appear to be shorter along the direction of motion than when they are seen at rest. Option B is the correct answer.

According to Einstein's theory, an item contracts more in the direction of motion the quicker it moves. This effect is not perceptible in our ordinary experiences since it is only perceptible at speeds that are a considerable fraction of the speed of light. Option B is the correct answer.

A fundamental theory of physics known as the special theory of relativity describes how the rules of physics apply to things moving quickly. The most well-known prediction of the theory is that no matter how quickly the observer is travelling in relation to the light source, the speed of light stays constant in all reference frames. Numerous tests have verified this prediction, which is now regarded as one of the foundations of contemporary science.

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The complete question is, "The special theory of relativity predicts that fast-moving objects will appear to be ______than when they are seen at rest:

a. fatter

b. shorter along the direction of motion

c. stretched out along the direction of motion

d. older

e. less massive"

The value of the fraction 1/15 - 1 / 10 will be - 1/ 30

A fraction simply means a piece of a whole. In this situation, the number is represented as a quotient such that the numerator and denominator are split. In this situation, in a simple fraction, the numerator as well as the denominator are both integers.

In this case, the value of the fraction will be:

= 1/15 - 1 / 10

= 10 / 150 - 15 / 150

= -5 / 150

= - 1/ 30

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Evaluate 1/15 - 1/10

This is a Uniformly Accelerated Rectilinear Motion exercise.

We obtain the following data:

Vo = 20 m/s, Vf = 35 m/s, t = 5, a = ¿?

To calculate the acceleration, subtract the final velocity minus the initial velocity, divided by the time.

a = Vf - Vo / t

Greetings

The force required to keep a 2 kg object moving to the right with a constant speed of 6.0 m/s is calculated to be 0 N.

It is given that the mass of the object m is 2 kg.

As the body is said to be moving with constant speed, its acceleration would be rate of change of velocity, which would be zero.

Acceleration a = 0

Now, let us calculate the force required to move the 2 kg object. From Newton's second law, we know the expression, F = m a.

where,

m is mass

a is acceleration

F = m a = 2 × 0 = 0 N

Thus, the required force to move the object in right direction is calculated to be 0 N.

The given options have inappropriate units. They should be in Newtons.

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Answer:

A horizontal line on a speed-time graph represents a constant speed. A sloping line on a speed-time graph represents an acceleration. The sloping line shows that the speed of the object is changing. The object is either speeding up or slowing down.

give me brainlist

Explanation:

Clear question is;

An ideal gas is enclosed in a piston-cylinder apparatus with the piston being freely movable. Given that ΔE is positive and ΔH is negative following a process,

pick one

A) the system absorbs heat and expands during the process.

B) the system absorbs heat and contracts during the process.

C) the system loses heat and expands during the process.

D) the system loses heat and contracts during the process.

E) the system loses heat but neither expands nor contracts during the process.

Answer:

Option A is correct.

Explanation:

In thermodynamics, when the change in energy which is ΔE of a system is positive, it means that the system is undergoing an endothermic process. An endothermic process is simply one where heat is absorbed from the surroundings

Now, when change in enthalpy which is ΔH is negative, it means that it's an exothermic reaction. Exothermic means it releases heat to the surroundings. This means work is positive because the system does work on the surroundings. Thus it will expand.

So the correct answer is;

heat is absorbed from the surroundings and will expand during the process.