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blondinia [14]
3 years ago
13

a ball rolls from rest down an incline with a uniform acceleration of 4m/s². what is it speed after 8 seconds​

Physics
1 answer:
NikAS [45]3 years ago
3 0
2 maybe I’m not sure but the app told me to answer some questions and I don’t know anything to be honest I hope someone will come and help you have a nice day
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As shown in the diagram, two massless wires connect a rotating pole to a sphere of mass 7.2 kg. The sphere revolves in a horizon
11Alexandr11 [23.1K]

Use Fnet=ma. Apply it to the vertical components of all the forces acting on the ball and since tension is the same on both wires you should be able to factor it out and solve for it. Picture below

5 0
4 years ago
What is the value of x?<br><br> 6x−2(x 4)=12
Ymorist [56]

Answer: The value of x is -6.

Explanation:

To calculate the value of 'x', we need to solve each function happening inthe equation.

The equation provided to us is 6x-2(4x)=12

To solve this, we will multiply 4x with 2 and then subtract the like terms and finally, we evaluate the value of 'x'.

6x-8x=12\\\\-2x=12\\\\x=\frac{12}{-2}\\\\x=-6

Hence, the value of x will be -6.

5 0
3 years ago
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What is true for ALL of the examples of electromagnetic waves?
nasty-shy [4]
A they all move the same speed in a vacuum this is because in a the photons don't bump in to anything
5 0
3 years ago
a 10kg box car rolls at 6m/s and crashes into a 20kg box car that is at rest. After the crash, both cars are stuck together. wha
Goshia [24]

Answer:

Their velocity is 0m/s because the first box was only 10 kg and the second box was double the weight

5 0
3 years ago
Is a negatively ionized lithium paste a conductor or insulator
Elenna [48]

Answer:

A negatively ionized lithium paste is a conductor.

Explanation:

A conductor is a material that conducts electricity. In other words, a conductor has little resistance to the movement of electric charge or electrons when an electric field is applied.

Insulating materials for electricity are those that offer a certain resistance to the movement of electrons or electric current. In other words, an electrical insulator is a material with a low capacity for conducting electricity.

The best conductors of electric current are metals due to the free electron clouds that favor the circulation of electric current through them.

So, <u><em>a negatively ionized lithium paste is a conductor. </em></u>

5 0
3 years ago
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