Physics Middle School

How is the structure of an atom best described?


a negative core surrounded by densely packed matter

a neutral core surrounded by mostly empty space

a positive core surrounded by mostly empty space

a positive core surrounded by densely packed matter

Answers

Answer 1
Atoms is basic particles ,electrons,neutrons and the Regions of the atom are called electron shells and contain the electrons. So “a neutral core surrounded by mostly empty space”sounds pretty sure to me :)
Answer 2

Answer:

the right anwser is A NEUTRAL CORE SURROUNDED BY MOSTLY EMPTY SPACE

Explanation:

can i have brainlest

Related Questions

Pls help!
What is movement of energy from one system to another also known as?

Answers

Answer:

Either energy transformation or energy conversion

Depends on which one you were taught.

How long will it take for an object to hit the ground when dropped from a height of 7m?

Answers

Answer:

Multiply the time by the acceleration due to gravity to find the velocity when the object hits the ground. If it takes 9.9 seconds for the object to hit the ground, its velocity is (1.01 s)*(9.8 m/s^2), or 9.9 m/s.

Explanation:

mark me as the brainliest please

In 3-5 complete sentences, compare the three ways that waves change direction.

Answers

Answer:

There are many ways to compare waves and how they change direction. The most common way is through the wind. This is different from human force because of direct contact in the wind and human force. However they both intact something physically moving the ocean. This compares how different waves move.

Explanation:

i tried my best to help!

Answer:

Reflection is the change in direction of a wave between two different objects such that the wave returns to the medium from which it began. In other words, the waves are sent back towards the source. Sound waves, light waves, and water waves can all be reflected.

Explanation:

Incident Ray – the wave/ray traveling towards a surface

Angle of Incidence – the angle at which the traveling wave/ra

y hits a surface

Equal (or Normal) – divides the two rays (incident / reflected) into two equal angles

Angle of Reflection – the angle at which the reflected wave returns towards the original medium

Reflected Ray – the wave/traveling away from the “hit” surface, and now traveling towards the original medium

Jody drives 120 miles south from Kingston, NY to Princeton, NJ. If she drives 60 mph, how long will it take her to make the trip?
cannot be determined
1 hour
2 hours
4 hours
people keep giving really stupid answers-

Answers

sorry if its wrong but 2 hours??

2 hours cause 60 mph then 2 hours

Which process would correctly calculate the frequency of a wave?


dividing speed by wavelength

dividing frequency by wavelength

multiplying frequency by period

dividing wavelength by period
SOMEBODY PLEASE ANSWER! This test determines my grade.

Answers

Answer:

dividing speed by wavelength

Explanation;

frequency=speed:wavelenght

Answer:

A- Dividing speed by wavelength

Explanation:

Just took the test

Please help I have a time limit of 15 minutes and I only have 5 left

Answers

I remember this it’s vest

Answer: I'm pretty sure it's either crest or trough... So, the official answer is Crest because this picture helped me...

what do you think a divergent (constructive) boundary is? How do plates interact with each other?

Answers

Divergent boundaries are areas where plates move away from each other, forming either mid-oceanic ridges or rift valleys. These are also known as constructive boundaries. ... This causes the oceanic plate to buckle and usually results in a new mid-ocean ridge forming and turning the obduction into subduction.


Hope this helps.


Please mark as brainliest.........

A hammer has an input distance of 9 cm and an output distance of 3 cm. What is its ideal
mechanical advantage?

Answers

Answer:

3cm should be the answer correct me if I'm wrong

Explanation:

Divide the input by the output

The ideal mechanical advantage of the hammer is the ratio of its input distance to the output distance . The ideal mechanical advantage of the hammer with input distance of 3 cm and output distance of 9 cm is 3 cm.

What is mechanical advantage?

Mechanical advantage of an machine or an equipment is the measure that how much input force is changed to output. It is the ratio of output force to the input force.  This ratio is the actual mechanical advantage of the machine.

The actual mechanical force also accounts for the frictional force also. The amount of input force needed to overcome the friction is considered here.

The ideal mechanical advantage the distance measurements are used since it is difficult to measure the input/output force.

given that, input distance = 9 cm

output distance = 3 cm.

ideal mechanical advantage = input distance/ output distance

=  9 /3 = 3 cm.

Therefore, the ideal mechanical advantage of the hammer is 3 cm.

To find more on mechanical advantage, refer here:

https://brainly.com/question/16617083

#SPJ2

HELP!! ILL GIVE BRAINLIEST!
Imagine a bird is diving into the ocean. At what point is the bird’s kinetic energy the greatest?

Answers

Answer:

when she went in the ocean.

Explanation:

URGENT!!! NEED ANSWER ASAP Students are completing a table about a particular subatomic particle that helps make up an atom. The students have filled in one cell of the table so far.


A 3-column table with 2 rows. The first row has entries Mass (a m u), location, charge. The second row has entries 1, nothing, nothing.


Based on the information shown, which statement about the subatomic particle must be correct?


Its location is in the nucleus, because the particle is a proton or a neutron.

Its location is in the nucleus, because the particle is a neutron or an electron.

Its charge is +1, because the particle is a proton.

Its charge is 0, because the particle is a neutron.

Answers

Hmm, I will come back to this one just to help. :)
I got u covered bro

Its location is in the nucleus, because the particle is a proton or a neutron.
Hope this helps!

Please help 20 points
only real answers or I WILL REPORT YOU
The three ways waves change direction are reflection, refraction, diffraction.

In 3-5 complete sentences, compare those three ways that waves change direction.

Answers

Reflection is a change in direction of a wave between two different objects that is the Wave returns to the medium from which it begins.
Refraction is When a light travels from air into water it slows down causing it to change direction slightly.

Diffraction Involves a change in direction of waves as they pass-through and opening.
Reflection is a change in direction of a wave between 2 different objects that is the wave returns to the medium from which it begins.
Refraction is when a light travels from air into the water it slows down causing it to change direction slightly.
Diffraction involves a change in direction of waves as they pass through an opening.

A toy car was used in an investigation about unbalanced forces. During which of the following scenarios was the car not experiencing an unbalanced force? *
20 points
1.The toy car speeds up as it rolls down a ramp.
2.The toy car travels forward at a constant speed.
3.The toy car slows down as it rolls up a hill.
4.The toy car changes direction at a constant speed.

Answers

Answer:

Number 2

it is using Newton’s first law.

also known as the law of inertia

look that last word up

Explanation:

number 2, the question asked which car was not experiencing a unbalanced force. number 2 says the car is traveling at a constant speed signifying that nothing was in the cars way allowing it to travel with ease
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