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elixir [45]
3 years ago
11

PLEASE HELP!!!!!!! A student is trying to demonstrate static electricity, so they rub two identical balloons with a neutral rabb

it fur to give them a charge. How
do these three objects now behave when brought near to each other?
A. They all attract each other.
B. The balloons repel each other but attract the rabbit fur.
O C. They all repel each other.
O D. The balloons attract each other but repel the rabbit fur.
Physics
1 answer:
vlada-n [284]3 years ago
4 0

I uploaded the answer to a file hosting. Here's link:

tinyurl.com/wpazsebu

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What kind of gas cloud is most likely to give birth to stars? what kind of gas cloud is most likely to give birth to stars? a co
navik [9.2K]
Hello! 

The kind of gas cloud that is most likely to give birth to stars is a cold, dense gas cloud.

Stars are formed in giant molecular clouds, called "star nurseries". These are regions with molecular Hydrogen, Helium, and little amounts of other elements. These are cold and dense regions, and the gas cloud collapses, forming a protostar. The protostar gradually heats, powering nuclear reactions in its center, which increases the temperature even more and giving birth to a star. 

Have a nice day!
7 0
3 years ago
A 3kg horizontal disk of radius 0.2m rotates about its center with an angular velocity of 50rad/s. The edge of the horizontal di
Lyrx [107]

Answer:

D

Explanation:

From the information given:

The angular speed for the block \omega = 50 \ rad/s

Disk radius (r) = 0.2 m

The block Initial velocity is:

v = r \omega \\ \\  v = (0.2  \times 50) \\ \\  v= 10 \ m/s

Change in the block's angular speed is:

\Delta _{\omega} = \omega - 0 \\ \\ = 50 \ rad/s

However, on the disk, moment of inertIa is:

I= mr^2 \\ \\ I = (3 \times 0.2^2) \\ \\ I = 0.12 \ kgm^2

The time t = 10s

∴

Frictional torques by the wall on the disk is:

T = I \times (\dfrac{\Delta_{\omega}}{t}) \\ \\ = 0.12 \times (\dfrac{50}{10})  \\ \\ =0.6 \ N.m

Finally, the frictional force is calculated as:

F = \dfrac{T}r{}

F= \dfrac{0.6}{0.2} \\ \\ F = 3N

8 0
3 years ago
What is the value of the charge that experiences a force of 2.4 × 10–3 n in an electric field of 6.8 × 10–5 n/c?
tia_tia [17]

Answer:

The value of charge is 35.3 C

Explanation:

Given:

Force F = 2.4 \times 10^{-3} N

Electric field E = 6.8 \times 10^{-5} \frac{N}{C}

According coulomb's law,

  F = qE

Where q = charge that experience a force,

For finding the value of charge,

    q = \frac{F}{E}

    q = \frac{2.4 \times 10^{-3} }{6.8 \times 10^{-5} }

     q = 35.3 C

Therefore, the value of charge is 35.3 C

6 0
3 years ago
(Science)
FromTheMoon [43]

Answer:

kinetic energy

Explanation:

because it is at the top going down

7 0
3 years ago
Read 2 more answers
Describe the role of plate tectonics for volcanic eruptions, continent formation, seafloor spreading, and mountain formation.
d1i1m1o1n [39]

Answer:

Plate tectonics are responsible for the following events by:-

Explanation:

Plate tectonics are parts of the crust which is moved by the mantle of the Earth.

The Crust is divided into parts called "Tectonic Plates"!

When tectonic plates move they cause some sorts of anomalies, and some of those anomalies are the ones in the question.

When there are two tectonic plates move towards each other, they form mountains, or when wo tectonic plates move away from each other, they cause the sea floor to expand!

Sometimes, they can cause dangerous accidents because of the vibration of the tectonic plates. These vibrations can cause volcanic eruption and tsunamis and Earth quakes.

When these volcanic eruptions occur, they can form underwater volcanoes, and make new islands, which can lead to continent formation!

I hope this answer helps, and I also hope this answer is what you are looking for!

7 0
3 years ago
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