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Nat2105 [25]
3 years ago
7

HELP PLEASEEEEEEEEEEEEEEEE

Physics
1 answer:
prisoha [69]3 years ago
5 0
Solid has vibrating molecules that barely move to keep it's shape

liquid moves at an average speed and keeps it's volume but not it's shape

gases move quickly and all over the place so they don't have a shape or volume

plasma is the quickest moving and is like a gas
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What do scientists use to predict the locations of electrons in atoms?
umka21 [38]

The probable answer would be A.Probability. This is because there are no certain ways to tell where the exact location of the electrons. Through probability, we can derive the closest location that the electrons are located and the energy they have.a 

8 0
3 years ago
You are at a friend’s house and they show you a magic trick. The balloon when brought near tiny pieces of paper is making the li
andrew11 [14]

Answer:

Static electricity.

Explanation:

Electric Charge; Is the quantity of electricity held in an object

The balloon is electrically neutral, meaning it had an equal amount of positive and negative charges hence it couldn't attract the paper.  

After rubbing the balloon, it gained an electric charge; and after gaining this charge it got the ability to exert a force on the pieces of paper and attract them, This is called static electricity.

Therefore, Static electricity caused the paper to stick to the balloon.  

5 0
3 years ago
a loop of wire embedded in the road at an intersection can be used to trigger a traffic signal. This is an application of magnet
7nadin3 [17]

<u>Answer:</u>

<em>A loop of wire installed at an intersection can be used to trigger a traffic signal. </em>

<u>Explanation:</u>

Electromagnetic induction has an application in the field of vehicle detection. It can be used to detect vehicles crossing a point, like a traffic signal. Detection is achieved by placing an electrically conducting well insulated loop at the required point.

Alternating currents of appropriate frequency are passed through the loop and the system becomes a tuned electrical circuit. Passage of a vehicle through the loop increases its inductance. This change is due to the ferrous components of the vehicle.

The vehicle being a metallic body causes eddy currents to develop within the loop. This brings a decrease  in  the inductance of the loop. Increase in inductance when compared with the decrease is visibly great.

This produces an overall decrease in inductance of the loop which reduces the impedance of the circuit to alternating current. This triggers the development of a pulse to traffic signal controller indicating the passage of  a vehicle.

7 0
3 years ago
A water-balloon launcher with mass 5 kg fires a 1 kg balloon with a velocity of
Mashcka [7]

1.6 m/s west is the answer

3 0
3 years ago
Match the major muscle group with its functional role.
Naily [24]

Answer:

Abdominal

Sitting up, postural alignment

Biceps

Lifting, pulling

Deltoids

Overhead lifting

Erector Spinae

Postural alignment

Gastronemius & Soleus

Push off for walking, standing on tiptoes

Gluteus

Climbing stairs, walking, standing up

Hamstrings

Walking

Latissimus Dorsi & Rhomboids

Postural alignment, pulling open a door

Obliques

Rotation and side flexion of body

Pectoralis

Push up, pull up, bench press

Quadriceps

Climbing stairs, walking, standing up

Trapezius

Moves head sideways

Triceps

Pushing

God bless you. Because my soul almost left my body when i had to do this.

7 0
3 years ago
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