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blagie [28]
3 years ago
9

What is the precision for each measurement for the online simulation. What would be the precision for force

Physics
1 answer:
zimovet [89]3 years ago
4 0

Answer:

Unit of precision for force is the Newton.

Explanation:

It is the official unit used to describe force in science and mostly abbreviated with the symbol N.

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Which change occurs when an atom undergoes alpha decay?
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In an alpha decay, an atom emits an alpha particle. An alpha particle consists of 2 protons and 2 neutrons: this means that during this kind of decay, the original atom loses 2 protons and 2 neutrons from its nucleus.

This also means that the atomic number Z of the element (the atomic number is the number of protons in the nucleus) decreases by 2 units in the process, while the mass number A (the mass number is the sum of the number of protons and neutrons) decreases by 4 units. 
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The center-seeking change in velocity of an object moving in a circle is:
NeTakaya

The center-seeking change in velocity of an object moving in a circle is the centripetal acceleration.

So, by Newton's laws, we know that an object moving with a given velocity will remain in constant motion with a constant velocity until we apply an acceleration.

So we define acceleration as the rate of change of the velocity, also remember that velocity is a vector (has magnitude and direction), so, if there is a change the direction of the velocity, we have an acceleration that causes that.

In circular motion, the velocity vector is always perpendicular to the radius of the circle, and it can only be possible if the velocity direction is changing constantly. This will happen because of something called centripetal acceleration.

This acceleration points radially inwards (to the center of the circle) so is also perpendicular to the velocity of the moving object, and this is what causes the constant change in the direction of the velocity of the moving object.

Just to give an example, if you have a string with a mass on one end, and with your hand, you rotate the mass (from the string), the tension of the string would be the centripetal acceleration.

If you want to learn more about circular motion, you can read:

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2 years ago
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In a cinema theatre, why do we normally not hear echoes even though the sounds are loud?​
Aleksandr-060686 [28]

Answer:

An echo is formed as a result of reflection of the original sound which returns to the listener. You might have experienced Echo in an EMPTY ROOM but no echo is produced after the room is occupied. To avoid echo from being produced the echo has to be absorbed.

Explanation:

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3 years ago
1. A train engine pulls the boxcars. What are the horizontal forces present?(1 point)
NikAS [45]

Force is the influence that is capable of bringing about motion

The correct options are;

1. C. The pull of the engine, friction force

2. A. Weight, push of the tracks against the wheel

3. D. The astronaut weighs the most on Earth and least on the Moon

4. Please see attached drawing for example

5. Please see attached drawing for example

6. The data points will fall along a line this that as the force increases, the acceleration increases

Reason:

1. The horizontal forces are the forces acting along the horizontal x-axis, therefore;

A train engine pulling a boxcar what horizontal forces are;

C. The pull of the engine, friction force

2. The vertical forces are the forces acting an  the direction of the y-axis of a graph

The vertical forces present when a train pulls a boxcar are;

A. Weight, push of the tracks against the wheel

3. The weight of an astronaut, W = mass × Gravity

  • Therefore, the weight increases with increasing acceleration due to gravity

Therefore, the least weight is on the moon, where acceleration due to gravity is 1.6 m/s², and most on Earth where the acceleration due to gravity is approximately 9.81 m/s²

  • The correct option is D. The astronaut weighs the most on Earth and least on the Moon

4. The magnitude of the downward force is the sum of the vertical forces acting downwards

5. The net force is given by the vector sum of the forces

6. According to Newton's second law, Force, F = Mass, m × Acceleration, a

  • Therefore, where the students conduct the experiments rightly, we have that the data points will fall along a line this that as the force increases, the acceleration increases

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2 years ago
Which are parts of the middle ear? Check all that apply.
stellarik [79]

Answer:

middle ear has three bones! the hammer, anvil, stirrup, and ear drum

Explanation:

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3 years ago
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