WILL MARK BRAINLIEST The diagram shows changes of state between solid, liquid, and gas. The atoms of a substance gain energy during a change of state. Before the change the atoms are close together and cannot slide past one another. After the change, the substance can fill its container.

Which arrow represents the change of state described above?

1.L
2.M
3.N
4.O

Answer:

Oil

Explanation:

The oil will lose heat more quickly compared to water. This is because oil has a lower specific heat capacity compared to water.

An interaction between electricity and magnetism produces an

electromagnet, while a permanent magnet induces the paper clip's

magnetic field. Hence, option (C) is correct.

An object that can generate a magnetic field, attract unlike poles, and repel like poles is referred to as a magnet.

Magnets that are frequently utilised are permanent magnets. Because they maintain their magnetic quality after being magnetised, they are referred to as permanent magnets.

A coil of wire is used to create electromagnets (wire curled in series). This generates a magnetic field more effectively than a wire running straight. By tightly winding a wire around a strong magnetic core formed of an iron-based substance, this effect can be amplified. In the image above, a coil is seen wrapped around an iron nail. The iron nail is not magnetic on its own.

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Answer:

i would have to say B makes the most sense

Explanation:

Answer:

The maximum voltage that can be applied without damaging the resistor is 4.85 V

Explanation:

Electric Power in a Resistor

Given a resistor or resistance R connected to a circuit of voltage V carrying a current I. The relation between these three magnitudes is given by Ohm's Law:

V = R.I

The dissipated power P of a resistor can be calculated by the following equation, known as Joule's first law:

[tex]P = I^2.R[/tex]

Solving the first equation for I:

[tex]\displaystyle I=\frac{V}{R}[/tex]

Substituting in the second equation:

[tex]\displaystyle P=\frac{V^2}{R^2}.R[/tex]

Simplifying:

[tex]\displaystyle P=\frac{V^2}{R}[/tex]

Solving for V:

[tex]V=\sqrt{P.R}[/tex]

The resistor has a resistance of R=47Ω and can hold a maximum power of P=0.5 W, thus the maximum voltage is:

[tex]V=\sqrt{0.5\cdot 47}[/tex]

[tex]V=\sqrt{23.5}[/tex]

V = 4.85 V

The maximum voltage that can be applied without damaging the resistor is 4.85 V

Answer:

water can be used as displacement to calculate the volume of a solid object.

Answer: If the object has an irregular shape , the volume can be measured using a displacement can . The displacement can is filled with water above a narrow spout and allowed to drain until the water is level with the spout. As the irregular object is lowered into the displacement can, the water level rises.

Explanation: google

Answer:

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Explanation:

I REALLY NEED THIS

Answer:

Oh my gosh yayyy one of the asnwers got deleted!!!! Yay thx for the points

Explanation:

Answer:

how tall is building

Explanation:

Answer:

A. When it is in a magnetic field, it becomes a temporary magnet.

Explanation:

An iron bolt is attracted to a magnet because when in a magnetic field, the iron becomes a temporary magnet.

This is because the iron aligns their electrons in the magnetic fields.

Basically speed is equal to distance divided by time

Explanation:

velocity is just speed and direction

Answer:

19.80 m/s

Explanation

you just multiply the acceleration of gravity by the amount of time since it was let go of. So you get: velocity = 19. 80 m/s^2 * time, or V = gt. The negative sign just means that the object is moving downwards.

Answer:

Explanation:

Changing states of matter and energy

A block of ice is solid water. When heat (a form of energy) is added, the ice melts into liquid water. If heat is removed from water vapour, the gas cools down and it condenses back into liquid water. Continue to cool the water (by removing heat), and it becomes solid ice.

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Answer:

a. before the object passes over the box

Explanation:

To let in the object into the box, you must drop the object before its passes over the box.

Answer: You would divide the kids up by how much they weighed in mass until you would get and equal weight for both teams so the tug of war match would be equal.

Explanation:

Since the goal is to have equal teams, the kids would be divided based on their weights until both teams have equal weight.

There are three Newton's law of motion. The first law is that an object will not alter its motion unless there's a force that acts on it.

In the second law,  an object's force equals the mass multiplied by the acceleration. The third law explains that when there is an interaction between two objects, forces are applied.

Since there are 11 people participating and the person wants equal teams, the kids would be divided based on their weights. This is to ensure that the total weights for both teams are the same.

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Answer:

20600N

Explanation:

Given parameters:

Mass of the roller coaster  = 515kg

radius  = 10m

Speed  = 20m/s

Unknown:

Force of the track pushing up on the vehicle  = ?

Solution:

The force pulling the roller coaster along the track is the centripetal force.

To find the centripetal force, use the expression below;

  F  = [tex]\frac{mv^{2} }{r}[/tex]

where;

  m is the mass

  v is the speed

  r is the radius

Now insert the parameters and solve;

              F = [tex]\frac{515 x 20^{2} }{10}[/tex]  = 20600N

Answer:

The speed of the water flow in the pipe on the second floor is approximately 13.1 meters per second.

Explanation:

By assuming that fluid is incompressible and there are no heat and work interaction through the line of current corresponding to the pipe, we can calculate the speed of the water floor in the pipe on the second floor by Bernoulli's Principle, whose model is:

[tex]P_{1} + \frac{\rho\cdot v_{1}^{2}}{2}+\rho\cdot g\cdot z_{1} = P_{2} + \frac{\rho\cdot v_{2}^{2}}{2}+\rho\cdot g\cdot z_{2}[/tex] (1)

Where:

[tex]P_{1}[/tex], [tex]P_{2}[/tex] - Pressures of the water on the first and second floors, measured in pascals.

[tex]\rho[/tex] - Density of water, measured in kilograms per cubic meter.

[tex]v_{1}[/tex], [tex]v_{2}[/tex] - Speed of the water on the first and second floors, measured in meters per second.

[tex]z_{1}[/tex], [tex]z_{2}[/tex] - Heights of the water on the first and second floors, measured in meters.

Now we clear the final speed of the water flow:

[tex]\frac{\rho\cdot v_{2}^{2}}{2} = P_{1}-P_{2}+\rho \cdot \left[\frac{v_{1}^{2}}{2}+g\cdot (z_{1}-z_{2}) \right][/tex]

[tex]\rho\cdot v_{2}^{2} = 2\cdot (P_{1}-P_{2})+\rho\cdot [v_{1}^{2}+2\cdot g\cdot (z_{1}-z_{2})][/tex]

[tex]v_{2}^{2}= \frac{2\cdot (P_{1}-P_{2})}{\rho}+v_{1}^{2}+2\cdot g\cdot (z_{1}-z_{2})[/tex]

[tex]v_{2} = \sqrt{\frac{2\cdot (P_{1}-P_{2})}{\rho}+v_{1}^{2}+2\cdot g\cdot (z_{1}-z_{2}) }[/tex] (2)

If we know that [tex]P_{1}-P_{2} = 0\,Pa[/tex], [tex]\rho=1000\,\frac{kg}{m^{3}}[/tex], [tex]v_{1} = 15.5\,\frac{m}{s}[/tex], [tex]g = 9.807\,\frac{m}{s^{2}}[/tex] and [tex]z_{1}-z_{2} = -3.5\,m[/tex], then the speed of the water flow in the pipe on the second floor is:

[tex]v_{2}=\sqrt{\left(15.5\,\frac{m}{s} \right)^{2}+2\cdot \left(9.807\,\frac{m}{s^{2}} \right)\cdot (-3.5\,m)}[/tex]

[tex]v_{2} \approx 13.100\,\frac{m}{s}[/tex]

The speed of the water flow in the pipe on the second floor is approximately 13.1 meters per second.

Answer: Radioactive dating

Explanation: I took the test, and use the other answer, and got it wrong. The test told me that this is the correct one.

Answer:

Radioactive dating

I took the test recentley :)

Answer:

You may be saving someone from a rock slide, where the rocks will fall at any time, before they fall they have potential energy.

Explanation:

Answer:

5850N

Explanation:

Given parameters:

Mass of the car  = 750kg

Acceleration = 7.8m/s²

Unknown:

Net force  = ?

Solution:

According to Newton's second law of motion;

  Force  = mass x acceleration

To find the net force input the given parameters:

   Net force on the car  = 750 x 7.8  = 5850N

Answer:

In the core of stars

Explanation:

Nuclear fusion is usually found in the cores of stars.

In nuclear fusion, there is a combination of atomic nuclei to form a larger one.

Answer:

Nuclear fusion of hydrogen to form helium occurs naturally in the sun and other stars.

Answer:

protons + neutrons

Explain:

Is equivalent to the number of protons and neutrons in the atom

Answer:

The atomic mass of an element is underneath the symbols whereas for Li or Lithium it is 6.94 then for B or Boron it is 10.81.

Explanation:

So in otherwords the atomic mass is right under the symbol of an element.

Answer:

f=ma

mass of box =7kg

Explanation:

Answer:

Identify the formula to calculate velocity.

Explanation:

Sorry I have no explanation.

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But hope this helps!!!

Answer: it becomes a positive ion

Explanation:

So, when an atom loses 2 electrons there will be no change in the number of neutrons. Therefore, an isotope will not form. Thus, it is concluded that when an atom with no charge loses two electrons, it becomes a positive ion.

Answer:

a positive ion

Explanation:

Answer:

Explanation:

all

Answer:

Explanation:

Step one:

given data

mass of ball m=0.43kg

speed v= 75m/h >>>>> to m/s = 75*0.00027

         v =0.021m/s

Required

the kinetic energy KE

Step two

applying

KE= 1/2mv^2

KE= 1/2*0.43*(0.021)^2

KE= 0.5*0.43*0.0004.41*10^-4

KE=0.000094815

KE=9.48*10^-5J

The kinetic energy is 9.48*10^-5J

Answer:

both drivers experience the same force. just with different "results"

Explanation:

Answer:

You do

Explanation:

Momentum is mass*velocity. So Newton's 3rd law equal and opposite reaction. Because you weigh less you will have more force act on you than the driver who weighs more.

Answer:

[tex]\boxed {\boxed {\sf v\approx0.24 \ m/s}}[/tex]

Explanation:

Velocity can be found by dividing the displacement by the time.

[tex]v=\frac{displacement}{time}[/tex]

The displacement is 4.77 meters and the time is 19.5 seconds.

[tex]displacement=4.77 \ m \\time=19.5 \ s[/tex]

Substitute the values into the formula.

[tex]v=\frac{4.77 \ m }{19.5 \ s}[/tex]

Divide.

[tex]v=0.244615385 \ m/s[/tex]

Let's round to the nearest hundredth (just to make the answer more concise).

The 4 in the thousandth place tells us to leave the 4 in the hundredth place.

[tex]v\approx0.24 \ m/s[/tex]

The velocity of the turtle is about 0.24 meters per second.