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jeyben [28]
3 years ago
12

Please help with this !!!!!!

Physics
1 answer:
babymother [125]3 years ago
4 0

Answer:

answer is d from my guess

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The diagram shows a ballistic pendulum. A 200 g bullet is fired into the suspended 4 kg block of wood and remains embedded insid
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What was the initial momentum of the bullet before collision?

Answer:

10 Kg.m/s

Explanation:

Momentum is a product of velocity of an object in m/s and its mass in kgs hence numerically expressed as p=mv where p is momentum, v is velocity and m is mass. Substituting m for 0.2 kg and v for 50 m/s then p=0.2*50=10 kg.m/s

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Shown below is a parallel circuit of two light bulbs.
nikitadnepr [17]

The characteristics of parallel circuits allow to find the correct answer for the question about what happens when a light bulb is:  

   D) Bulb 2 will stay lit and the light source will be stronger.

Electrical circuits have two forms and connection:  

   • Serie. In this case there is only one path through which current can circulate the current.  

   • Parallel. There are several roads where the current can circulate.  

In a parallel circuit, the total current in the circuit is the sum of the current in each branch, the voltage in all branches remains constant.

Let's analyze the claims:  

A) False. The bulbs are independent, what happens to one does not affect the other.

B) False. Both bulbs were on, so the second bulb should not be affected.  

C) False. When burn a light bulb, there is more current in the other branch, The opposite happens.  

D) True. When burn a light bulb there is more current in the other branch and therefore the light bulb 2 can dissipate more power by shining a little brighter.

In conclusion, using the characteristics of parallel circuits we can find that the correct answer for the question about what happens when a light bulb burns out is:  

        D) Bulb 2 will stay lit and the light source will be stronger.

Learn more about parallel circuits here:  brainly.com/question/23088951

3 0
3 years ago
HELP FAST!! Which items are matter?
babymother [125]

Battery

mobile phone

Explanation:

From the given options the items that are matter are the battery and mobile phone.

What is matter?

  • Matter is anything that has weight and occupies space.
  • There are three states of matter which are solid, liquid and gas
  • A solid is a rigid body with an ordered arrangement of atom
  • A liquid is matter that can flow
  • Gases are random molecules.

A battery and mobile phones are solids

learn more:

State of matter brainly.com/question/10972073

#learnwithBrainly

5 0
4 years ago
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