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MrRissso [65]
3 years ago
12

Changes in energy causes matter to change phase. true or false

Physics
1 answer:
cupoosta [38]3 years ago
8 0

it's true because we'll engery and causes of matter work together I think

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Why is the earth's magnetic field important to being able to have life on earth?
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D) It protects the earth from solar winds which contain particles which would destroy the atmosphere and end life on earth.
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The release of energy by particles of matter that have absorbed extra energy is called what ?
natali 33 [55]
The answer is radiation
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What is the momentum of an 18-kg object moving at 0.5 m/s?
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6 0
3 years ago
the weight of an object on earth is 350 newtons. on mars the same object would weigh 134 newtons. what is the acceleration due t
Eddi Din [679]
Mass will remain constant on both planet, let mass of the object be "m".
let x be the <span>acceleration due to gravity on the surface of mars.
Weight of object on earth = m *g , where g is </span><span>acceleration due to gravity on the surface of earth
</span>⇒350 =  m *  9.8
⇒m = 350  /  9.8                        .............................equation(1)
Weight of object on mars = m * x , where x is acceleration due to gravity on the surface of mars
134  =   m   *  x                           .............................equation(2)
putting the value of m from equation (1) in equation(2) , we get,
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⇒  x   =   3.572 m/s²
7 0
4 years ago
A supply plane needs to drop a package of food to scientists working on a glacier in greenland. the plane flies 100 m above the
pishuonlain [190]

The package should be dropped <u>678 m</u> short of the target.

A package dropped from a plane which is moving at a speed v, has a horizontal velocity equal to the horizontal velocity of the plane. It has a parabolic trajectory, traversing a horizontal range x while it falls through a vertical height y.

The package has no initial vertical velocity, and it falls through a height y under the action of the acceleration due to gravity g.

Use the equation,

y=\frac{1}{2} gt^2

Write an expression for t, the time taken for the package to fall through y.

t^2=\frac{2y}{g}

Substitute 100 m for y and 9.81m/s² for g.

t^2=\frac{2y}{g}\\ =\frac{2(100m)}{9.81m/s^2} \\ =20.39s^2\\ t=4.52s

In the time t  the package travels a horizontal distance x. The horizontal velocity of the package remains constant, since no force acts along the horizontal direction.

Therefore, the horizontal distance traveled by the package is given by,

x=vt\\ =(150m/s)(4.52s)\\ =678m

If the package is released <u>678m</u> before the target, the package would reach the scientists working in Greenland.

6 0
4 years ago
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