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agasfer [191]
2 years ago
14

When gases, liquids, or solids are in contact with a moving object, the flow of

Physics
1 answer:
Gwar [14]2 years ago
5 0

Answer:

Heat

Friction is what causes heat.

Brainliest always helps.

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A long uniform wooden board (a playground see-saw) has a pivot point at its center. An older child of mass M=32 kg is sitting a
PIT_PIT [208]

Answer:\frac{5L}{6}

Explanation:

Given

Wooden board is pivoted at center and

Older child of mass M=32\ kg is sitting at a distance of L from  center

if two child of mass \frac{M}{2} is sitting at a distance \frac{L}{6} and x(say) from pivot then net torque about pivot is zero

i.e.

\Rightarrow \tau_{net}=MgL-\frac{M}{2}g\frac{L}{6}-\frac{M}{2}gx

as \tau_{net}=0

Therefore

MgL=\frac{M}{2}g\frac{L}{6}+\frac{M}{2}gx

L-\frac{L}{6}=x

x=\frac{5L}{6}

Therefore another child is sitting at a distance of \frac{5L}{6}

3 0
2 years ago
Which of the following characterizes a beta ray? Choose all that apply. is electromagnetic radiation is a product of natural rad
uranmaximum [27]

Explanation:

When a radioactive substance decays then the fast moving electrons emitted by it is known as beta ray. Basically, a number of beta particles are ejected by a beta ray.

Symbol of a beta particle is ^{0}_{-1}e. A beta ray is a natural decay of a radioactive element. As we know that opposite charges get attracted towards each other. So, a beta ray gets attracted towards a positively charged plate.

Therefore, we can conclude that following are the characterizes a beta ray:

  • a product of natural radioactive decay.
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8 0
2 years ago
What is the current through a wire if 240 coulombs of charge pass through the wire in 2.0 minutes?
xenn [34]
Current = charge/time = 240/2x120 =1A.
Current flowing is 1 ampere. 
4 0
3 years ago
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Bianca sends her brother Phineas an e-mail to invite him to dinner. In this scenario, what is the channel according to Shannon's
dusya [7]
The channel is whatever was used to carry information from
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In this scenario, the channel is e-mail.
4 0
3 years ago
A family communicating using a cell phone at dinner. Using a cell phone is more addicted to technology things than missed opport
tatyana61 [14]

Answer:

The family may be addicted to technology by using their cellphones to communicate is still communicating in a way, but it would be better to use social face- to - face interactions.

Explanation:

4 0
3 years ago
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