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juin [17]
3 years ago
11

First to answer gets 100 points

Physics
2 answers:
melomori [17]3 years ago
7 0

ans is Static electricity is the movement of electrons. Electrons will move from the hair to the balloon.

lisabon 2012 [21]3 years ago
3 0

It discusses static electricity and how electrons move from hair to balloon. So the answer is B.  

Static electricity is the movement of electrons. Electrons will move from the hair to the balloon.

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I WILL MARK YOU TOP IF YOU HELP ME I NEED THIS ASAP!!!!
Pachacha [2.7K]
The basketballs and racquetball eventually stopped bouncing due to the first law. the first law states that an object at rest will stay at rest unless acted upon by an external force. this means that once the 2 balls lose friction, they will remain at rest until acted upon by an external force. once the 2 balls lose friction(energy), they come to a complete stop.
6 0
3 years ago
If
JulijaS [17]

Answer:

the time it will take the element to decay to 1.9 g is 34.8 mins.

Explanation:

Given;

half life of Nitrogen, t = 10 min

initial mass of the element, N₀ = 20 g

final mass of the element, N = 1.9 g

The time taken for the element to decay to final mass is calculated as follows;

time (min)                        mass remaining

0 ----------------------------------20 g

10 mins ------------------------- 10 g

20 mins ------------------------- 5 g

30 mins -------------------------- 2.5 g

40 mins --------------------------- 1.25 g

Interpolate between 2.5 g and 1.25 to obtain the time for 1.9 g

30 min ------------------------- 2.5 g

x ----------------------------------- 1.9 g

40 min -------------------------- 1.25 g

\frac{30 - x}{40- 30} = \frac{2.5 - 1.9}{1.25 - 2.5} \\\\-1.25(30-x) = 6\\\\-37.5 + 1.25x = 6\\\\1.25x = 6+37.5\\\\1.25x = 43.5\\\\x = \frac{43.5}{1.25} \\\\x = 34.8 \ mins

Therefore, the time it will take the element to decay to 1.9 g is 34.8 mins.

5 0
3 years ago
A car with an initial speed of 14.5 km/s accelerates at a uniform rate of 1.6 km/s for 9.0
myrzilka [38]

here's the answers

this should help and can I be marked brainiest

Download pdf
7 0
3 years ago
Imagine That the tank is filled with water. The height of the liquid Collin is 7 m and the area is 1.5 m² what’s the force of gr
enyata [817]

== The volume of water in the tank is (1.5 m²) x (7 m) = 10.5 m³ .

== The density of water is 1000 kg / m³ .

== The mass of water in the tank is (10.5 m³) x (1000 kg/m³) = 10,500 kg.

== The force of gravity is (mass?) x (gravity)

force = (10,500 kg) x (9.8 m/s²)

<em>force =  102,900 Newtons</em>

8 0
4 years ago
Romeo (77kg) sings to Juliet (55kg) in the rear of a rowboat. He is 2.7 m away from Juliet. After the song, Juliet carefully mov
Vlad [161]

Since the distance between them is 2.7 meters, the boat will also move a distance of 2.7 meters for Juliet to meet Romeo.

<h3>DISPLACEMENT</h3>

Displacement is the distance travelled in a specific direction. It is a vector quantity.

Given that Romeo (77kg) sings to Juliet (55kg) in the rear of a rowboat and he is 2.7 m away from Juliet. If after the song, Juliet carefully moves to the rear of the boat (away from the shore) to kiss Romeo which is 2.7 meters away, the distance covered by the 80 kg boat will also be equal to 2.7 m.

Since the distance between them is 2.7 meters, the boat will also move a distance of 2.7 meters for Juliet to meet Romeo.

Therefore, the answer will be 2.7 m

Learn more about Displacement here: brainly.com/question/248054

6 0
2 years ago
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