The particles of a solid are linked together in a network. if the temperature of the solid increases, the particles gain energy. if they gain enough energy, the particles can break free of the network. then, they are able to move around more freely.in the event described above, what kind of change is taking place?

Answers

Answer 1

Answer: This is a physical change at the the melting point where the phase changes from solid to liquid.

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Four wire AB,BC,CD and DA each resistance 4 ohm and a fifth wire BD of resistance 8 ohm are joined to form a rectangle to which BD is a diagonal.The effective resistance between the points A and B is?

Answers

Since it's so late, and it's way past my bedtime, and I'm tired and hungry,
and I still have real work to do, and I don't think you're really a legitimate
asker of Brainly questions anyway, I'm going to do something that's against
my principles and I almost never do. I'm going to violate my own personal
Prime Directive, and give you the answer without any explanation of where
it comes from.

Ready ?

Here goes:

The effective resistance between points 'A' and 'B' is (2 and 2/3) Ω .

In february a little town received snow on a daily basis. The first day they had 10 inches, 3 inches the second, 7 inches the 3rd, and 4 inches on the fourth day. What was the average snowfall?

Answers

The average snowfall of the four days was 6 inches.

What is snow?

When atmospheric water vapor freeze into small ice crystals and falling in small white flakes or lying on the ground as a white layer, it is called snow.

In the question it is said that,

Amount of snow received by the town on first day = 10 inches.

Amount of snow received by the town on second day = 3 inches.

Amount of snow received by the town on third day = 7 inches.

Amount of snow received by the town on fourth day = 4 inches.

Total amount of snow received by the town on these four days = ( 10 + 3+ 7 + 4) inches.

=24 inches.

Hence, average amount of snow received by the town on these four days = total amount of snow received ÷ 4

= ( 24 ÷ 4) inches.

= 6 inches.

Hence, the average snow received by the little town was 6 inches on those days.

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Answer:

The average is 6

Explanation:

To find the average, you have to first add all the numbers. After you add all the numbers up, then you divide by how many numbers there are. This one had 4 numbers so you divide by 4

Imagine two billiard balls on a pool table. Ball A has a mass of 2 kilograms and ball B has a mass of 3 kilograms. The initial velocity of ball A is 9 meters per second to the right, and the initial velocity of the ball B is 6 meters per second to the left. The final velocity of ball A is 9 meters per second to the left, while the final velocity of ball B is 6 meters per second to the right. 1. Explain what happens to each ball after the collision. Why do you think this occurs? Which of Newton’s laws does this represent?

2. What can you say about the total momentum before and after the collision?

3. What do you think would happen to the velocity of each ball after the collision if the masses and initial velocities of each ball were the same?

4. The mass of ball A is 10 kilograms and the mass of ball B is 5 kilograms. If the initial velocity is set to 3 meters per second for each ball, what is the final velocity of ball B if the final velocity of ball A is 2 meters per second? Use the elastic collision equation to find the final velocity of ball B. Assume ball A initially moves from right to left and ball B moves in the opposite direction. Identify each mass, velocity, and unknown. Show your work, including units, and indicate the direction of ball B in your answer.

5. If the mass of each ball were the same, but the velocity of ball A were twice as much as ball B, what do you think would happen to the final velocity of each ball after the collision? To answer this question, create a hypothesis in the form of an if-then statement. The “if” is the independent variable, or the thing that is being changed. The “then” is the dependent variable, or what you will measure as the outcome.
(Please show your work if you can)

Answers

1. After the collision, their velocities have switched. This is Newton's third law of motion.

2. The total momentum is conserved.

3. The same thing would happen if the collision is totally elastic.

For 4 and 5.
Using the conservation of momentum equation
m1v1 + m2v2 = m1'v1' + m2'v2'

Which phenomena did Michael Faraday explore to help him invent the motor and the generator?motion and magnetism

motion and light

electricity and motion

electricity and magnetism

Answers

To Build The Motor, Faraday Studied Electricity And Magnetism. Hope This helps!

For Invention of "Motor" and "Generator", Micheal Faraday did explore electricity and magnetism, he postulated his three laws of "Electromagnetic Induction" and two laws of "Electro-chemistry".

In short, Option D) Electricity and Magnetism would be your answer.

Hope this helps!

A 100-meter sprint is a race using only the straight side of a racetrack. A 400-meter sprint is a race that makes one complete lap around a racetrack. Why are velocity and speed the same for a 100-m sprint but not a 400-m sprint?

Answers

Speed is a scalar quantity (meaning it can be measured using a single number that represents the amount), while velocity is composed of the scalar quantity plus the direction. As the 100-meter sprint only takes place in one direction, the speed and velocity for this is just the same. For the 400-meter sprint however, the direction of your speed changes as you turn for her curved part of the race. Therefore, a direction change is happening.

Sample response on Edu is:

In the 100-m sprint, the displacement is 100 meters and the distance is 100 meters. This means speed and velocity are the same for the 100-m sprint. In the 400-m sprint, the distance is 400-m, but the runners stop at the same place they start so the displacement is zero. Zero displacement means zero velocity.

What is the acceleration of a ball traveling horizontally with an initial velocity of 20 meters/second and, 2.0 seconds later, a velocity of 30 meters/second?

Answers

v o = 20 m / s ( initial velocity )
t = 2.0 s
v = 30 m / s
a - acceleration:
v = v o + a t
a t = v - v 0
a = ( v - v o ) / t
a = ( 30 m/s - 20 m/s ) / 2 s = 10 m / s : 2 s = 5 m/s²

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