1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
andre [41]
2 years ago
13

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

ttle pieces of paper on the table move around. Explain the steps involved and charges on the objects that would have created this “Magic Trick”.
Physics
1 answer:
andrew11 [14]2 years ago
5 0

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.  

You might be interested in
Which parameter of glass is measured with bromoform and bromobenzene mixtures in a column?
Ahat [919]
The answer is Density.  The Density of the <span>glass is measured with bromoform and bromobenzene mixtures in a column.  </span>Density measurement<span> is done using Density gradient </span>columns. It is a <span> temperature-controlled density </span>column<span> containing a </span>mixture<span> of  b</span>romobenzene<span> and  </span>bromoform.
6 0
3 years ago
Read 2 more answers
A (20*20) cm² loop has a resistance of 0.10 Ω. A magnetic field perpendicular to the loop is B = 4t - 2t², where B is in tesla a
Ilya [14]

Answer with Explanation:

We are given that

Area of loop=(20\times 20) cm^2=400\times 10^{-4} m^2

1 cm^2=10^{-4} m^2

Resistance, R=0.1\Omega

B=4t-2t^2

We know that magnetic flux

\phi=BA

Emf ,E=\mid \frac{d\phi}{dt}\mid =\mid\frac{d(BA}{dt}\mid =\mid A\frac{dB}{dt}=400\times 10^{-4}\times \frac{4t-2t^2}{dt}\mid =\mid400\times 10^{-4}\times(4-4t)\mid

Current, I=\frac{E}{R}

Current, I=\frac{\mid 400\times 10^{-4}(4-4t)\mid }{0.1}=1.6\mid (1-t)\mid

Substitute t=0 s

Then, I=1.6\mid (1-0)\mid=1.6 A

Substitute t=1 s

Then, I=1.6\mid (1-1)\mid=0

Substitute

t=2 s

Current, I=1.6\mid(1-2)\mid=1.6 A

8 0
3 years ago
Read 2 more answers
2. Compare and Contrast A fault cuts through
Elenna [48]

Explanation:

The principle of cross-cutting relationships states that a fault or intrusion is younger than the rocks that it cuts through. The fault labeled "E" cuts through all three sedimentary rock layers (A, B,and C) and also cuts through the intrusion (D). So the fault must be the youngest formation that is seen and known of.

6 0
2 years ago
(15 POINTS) Victor drew a diagram to show the life cycle of a low-mass star.
Evgen [1.6K]
The answer is c so the area can grow
4 0
3 years ago
Read 2 more answers
The force F shown in Figure 4.30 has a moment of 40 Nm about the pivot. Calculate the magnitude
salantis [7]

\boxed{\sf \tau=rFsin\theta}

Put values

\\ \rm\hookrightarrow 40=2Fsin40

\\ \rm\hookrightarrow Fsin40=20

\\ \rm\hookrightarrow 0.64F=20

\\ \rm\hookrightarrow F=31.25N

8 0
2 years ago
Other questions:
  • You are given a copper bar of dimensions 3 cm × 5 cm × 8 cm and asked to attach leads to it in order to make a resistor.
    10·1 answer
  • Calculate the focal length of the mirror formed by the convex side of a shiny spoon that has a 1.54 cm radius of curvature. (b)
    11·1 answer
  • 2 examples of balanced forces
    6·1 answer
  • Please explain the process and equation to get the answer
    14·1 answer
  • How is kinetic energy related to the distance
    7·2 answers
  • You have 750 g of water at 10°C in a large insulated beaker. How much boiling water at 100°C must you add to this beaker so that
    7·1 answer
  • If a subway train is moving to the left (has a negative velocity) and then comes to a stop, what is the direction of its acceler
    14·1 answer
  • An explanation of the relationships among particular phenomena.
    10·2 answers
  • The image on the right was produced by a computer. It shows a complex molecule consisting of many atoms. What would be an advant
    11·2 answers
  • 4. A lamp in a circuit has 4 Amps of current. If there is 32 12 of resistance
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!