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2 years ago

10

During most nuclear reactions A. heat energy is produced but not light energy. B. energy is transferred out of the system. C. en

ergy is lost as cold fusion. D. energy is created in the system.

2 answers:

goldfiish [28.3K]2 years ago

6 0

Answer:

ITS B

Explanation:

TRUST ME

aniked [119]2 years ago

3 0

Answer:

A)heat energy is produced but not light energy

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What is the result of (305.120 + 267.443) x 0.50? How many answers can be written based on the principle of significant digits?

NNADVOKAT [17]

Answer:

The answer is 286.2815.

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2 years ago

A candy-filled piñata is hung from a tree for Elia's birthday. During an unsuccessful attempt to break the 4.4-kg piñata, Tonja

Klio2033 [76]

Answer: v = 0.6 m/s

Explanation: <u>Momentum</u> <u>Conservation</u> <u>Principle</u> states that for a collision between two objects in an isolated system, the total momentum of the objects before the collision is equal to the total momentum of the objects after the collision.

Momentum is calculated as Q = m.v

For the piñata problem:

$Q_{i}=Q_{f}$

$m_{p}v_{p}_{i}+m_{s}v_{s}_{i}=m_{p}v_{p}_{f}+m_{s}v_{s}_{f}$

Before the collision, the piñata is not moving, so $v_{p}_{i}=0$ .

After the collision, the stick stops, so $v_{s}_{f}=0$ .

Rearraging, we have:

$m_{s}v_{s}_{i}=m_{p}v_{p}_{f}$

$v_{p}_{f}=\frac{m_{s}v_{s}_{i}}{m_{p}}$

Substituting:

$v_{p}_{f}=\frac{(0.54)(4.8)}{(4.4)}$

$v_{p}_{f}=$ 0.6

Immediately after being cracked by the stick, the piñata has a swing speed of 0.6 m/s.

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2 years ago

In order to start an object moving, you must first overcome the force of _________ friction.

navik [9.2K]

It would be static friction which is what you have to overcome when an object is not in motion. When you move an object friction works against it like gravity and air resistance. I hope this helps!

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Well, 6/n=3/1, so n=2.

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2 years ago

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5.C) melting

6.C) solid

7.D) condensation, energy is removed

8.D) B is Liquid , it’s freezing as energy is removed

9.A) Gas would change to vapour

10.B) Vaporisation

11. A) As temp increases energy of particles increase and substance changes from solid to liquid to gas

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2 years ago