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klasskru [66]
3 years ago
9

What is most often given a value of zero to describe an object position on a srtaight line

Physics
1 answer:
Vsevolod [243]3 years ago
6 0
Reference point is most often given a value of zero to describe an object's position on a straight line
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"You can't see the forest for the trees" might seem an appropriate analogy for astronomers attempting to determine the shape of
denpristay [2]

Some of the techniques used by astronomers to determine the type of galaxy in which we live are:

  • radio,
  • optical,
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  • x-ray astronomy

<h3>What is Astronomy?</h3>

This refers to the study of heavenly bodies and space and other things that space is made up of.

Hence, we can see that the reason why it is so difficult to determine the shape of our galaxy is that astronomers can only infer its presence from the motions of stars in the galaxy, and a precise shape is difficult to be determined.

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5 0
2 years ago
A 22kg box slides down a 30.0 degree incline. If there is no friction, what is the acceleration of the box?
Rashid [163]

Answer:

Acceleration of the box is 4.9 m/s².

Explanation:

The free body diagram is shown below.

The weight of the body can be resolved into two mutually perpendicular components as shown. The force responsible for sliding motion of the box along the incline is due to mg\sin \theta acting along the incline.

Therefore, as per Newton's second law of motion,

Net force = mass\times acceleration

Now, net force acting along the incline is only mg\sin \theta

Therefore,

mg\sin \theta=ma\\a=g\sin \theta

Now, g=9.8\textrm{ and } \theta = 30

Therefore, the acceleration of the box is given as:

a=9.8\times \sin(30)=9.8\times 0.5=4.9\textrm{ }m/s^{2}

Acceleration of the box is 4.9 m/s².

6 0
4 years ago
Which component is used to change alternating current to direct current
Ad libitum [116K]
A rectifier is used.
3 0
3 years ago
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Two astronauts in space with a baseball decide to play catch to pass the time. In the language of conservation of momentum, desc
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As the first astronaut throws the ball, lets assume it goes with v velocity and the mass of the ball be m
the momentum comes out be mv, thus to conserve that momentum the astronaut will move opposite to the direction of the ball's motion with the velocity mv/M (where M is the mass of the astronaut).
4 0
4 years ago
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PLEASE HELP!!
Travka [436]

Answer:

Walking while alternating knee lifts with each step.

Standing up and sitting down from a chair without using your hands.

Standing with your weight on one leg and raising the other leg to the side or behind you.

Explanation:

Those are the ones that I could best come up with.

7 0
3 years ago
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