When a contact force acts between two objects, both objects experience the same size force, but in opposite directions. This is Newton's Third Law of Motion. Explain this sentence clearly and give real life example.?

Answers

Answer 1

Answer:

Answer:

These two forces are called action and reaction forces and are the subject of Newton's third law of motion. Formally stated, Newton's third law is: For every action, there is an equal and opposite reaction.

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Q14) When you break a bar magnet in half, how many poles does each piece have?

Answers

Each piece of magnet has only two poles, one north and one south. So if you break a bar magnet into two halves, the piece initially consisting the north pole at the edge automatically creates the south pole at the break point and the part consisting south pole creates North pole at the edge. So each piece has 2 poles.

A magnet is an item or substance that generates a magnetic field. The broken pieces of the magnet will have 4 poles.

What are magnets?

A magnet is an item or substance that generates a magnetic field. This magnetic field is invisible, but it is responsible for a magnet's most remarkable property: a force that attracts or repels other ferromagnetic elements such as iron, steel, nickel, cobalt, and others.

When a magnet is broken into two pieces, it produces two complete magnets, each with its own north and south poles and the same orientation as the original.

For example, if you break a 12-inch bar magnet with N on the left end and S on the right end midway between the two ends, you'll get two magnets with N on the left end and S on the right end, as seen in the illustration below.

Hence, the broken pieces of the magnet will have 4 poles.

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Short answerYou are provided a 20-mL solution of methanol and water.
a. Name the technique that you would use to separate and identify the components of the solution.
b. Provide specific details of the method used.
c. State the advantage of the method you choose.

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a. you can separate the components through chromatographic techniques (GC or HPLC). The advatage of using a high-tech chromatography equipment is the simultaneous separation - contents analysis.

b. chromatography is an affinity based separation which means using specific adsorbents, it can separate the component with a higher affinity to the adsorbents.

c. the advantage of which is the precision as well as the simultaneous separation and contents analysis.

A lamp is plugged into an outlet. which form of energy allows the lamp to be on?

Answers

Electrical energy is the correct answer

this is potential energy

Determine the volume at the equivalence point if a 0.100 M NaOH(aq) solution is used to titrate the following acidic solutions: (a) 50.0 mL of 0.200 M HBr(aq) (b) 30.0 mL of 0.150 M HNO3(aq)

Answers

Answer:

a) NaOH volume at the equivalence point is 100 ml.

b) NaOH volume at the equivalence point is 45 ml.

Explanation:

To calculate the concentration of acid, we use the equation given y neutralization reaction:

$n_1M_1V_1=n_2M_2V_2$

where,

$n_1,M_1\text{ and }V_1$ are the n-factor, molarity and volume of acid.

$n_2,M_2\text{ and }V_2$ are the n-factor, molarity and volume of base

a) If a 0.100 M NaOH (aq) solution is used to titrated with 50.0 mL of 0.200 M HBr(aq).

We are given:

$n_1=1\nM_1=0.200M\nV_1=50.0mL\nn_2=1\nM_2=0.100M\nV_2=?mL$

Putting values in above equation, we get:

$1* 0.200M* 50.0 mL=1* 0.100 M* V_2\n\nV_2=100 mL$

b) If a 0.100 M NaOH (aq) solution is used to titrated with 30.0 mL of 0.150 M $HNO_3$ (aq).

We are given:

$n_1=1\nM_1=0.150M\nV_1=30.0mL\nn_2=1\nM_2=0.100M\nV_2=?mL$

Putting values in above equation, we get:

$1* 0.150M* 30.0 mL=1* 0.100 M* V_2\n\nV_2=45 mL$

How are step-up transformers used in the transmission of electrical energy

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Step-up transformers are used at power stations to produce the very high voltages needed to transmit electricity through the National Grid power lines. These high voltages are too dangerous to use in the home, so step-down transformers areused locally to reduce the voltage to safe levels.

Which of the following explains the transfer of heat between two objects? A. flow of temperature from one object to the other B. flow of caloric from one object to the other C. collisions between particles only within each object D. collisions of particles of one object with those of the other object ***not sure!! :( Thank you!! :D

Answers

D is the correct answer.

Final answer:

Heat transfer between two objects happens when energy transfers from the hotter object to the colder object until they reach thermal equilibrium. This can happen through conduction, convection, and radiation.

Explanation:

The transfer of heat between two objects is best explained by the principle that energy is transferred from the hotter object to the colder object, and this occurs until both objects have reached the same temperature. This transfer of heat energy happens primarily through three processes known as conduction, convection, and radiation.

Conduction is the transfer of heat between two objects in direct contact with each other, such as a hot pan warming up food. Convection is the transfer of heat due to the movement of mass, typically within fluids like air or water. Radiation is the transfer of heat through electromagnetic waves, like the heat you feel from the Sun on a sunny day.

When two objects of different temperatures come into contact, like object X with temperature Tx and object Y with temperature Ty, heat flows spontaneously from the hotter object X to the colder object Y. This results in a loss of thermal energy in X and a gain in thermal energy in Y, until both reach a state of thermal equilibrium.

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