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ioda
2 years ago
9

The mass of 25cm of ivory was found to be 0.045kg. caculate the density of ivory in SI units​

Physics
1 answer:
solmaris [256]2 years ago
7 0

Answer:

dgdhvjgfjfdcdrtdgxbhjcdtsdhcbgtdytfgiuftrshdryrgbiuwdbcuhdds

Explanation:

,ajsgfgsdfubcygduhdsbcdshyudbckjdshfyendhdndbhfdbuehundweugdjnbfcjdfhewjdnbewqwioehsajcnbsfhhgjhbgjhhbjdhgwbvdwnjjguhbwqhjbsjwqhshwbdjagdasndhsajuwqbdjasnjashdjaskxnjgjjsklx ms,dhwshjksnjdbhjssnj,

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A ball is dropped off the roof of a tall building. If the ball reaches the ground in 8 seconds, how tall is the building, in met
Ghella [55]

Let <em>b</em> be the height of the building, and <em>y</em> the height of the ball at time <em>t</em>, given by

<em>y</em> = <em>b</em> - 1/2 <em>gt</em>²

where <em>g</em> = 9.8 m/s² is the magnitude of the acceleration due to gravity.

It takes the ball 8 s to reach the ground, at which point <em>y</em> = 0, so that

0 = <em>b</em> - 1/2 (9.8 m/s²) (8 s)²

<em>b</em> = 1/2 (9.8 m/s²) (8 s)²

<em>b</em> = 313.6 m

5 0
3 years ago
Waves carry ______ through matter or ______.
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Waves carry energy through matter or space
5 0
2 years ago
Define principal focus of a lence​
Irina18 [472]

Answer:

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7 0
3 years ago
When light falls on a soap bubble or on the oily film spread on a water puddle, a spectrum of colors is observed. How is this sp
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When the light falls on a soap bubble spread on a water puddle, and a spectrum of color is observed due to constructive and destructive of light waves which means option (3) is correct. Light waves interfere into each other to produce a spectrum which consists of bright and dark fringes.

6 0
1 year ago
Why is it wrong to say a single object all alone is moving
Nuetrik [128]

Answer:

It is wrong to say that "a single object all alone is moving" simply because it goes against Newton's law of inertia.

Explanation:

From Newton's law of inertia, it states that: An object at rest or in constant motion will continue in it's present state unless it is acted upon by an external force.

Which means that a single object by itself cannot move anywhere unless it is acted upon by an external force..

Thus, it is wrong to say that "a single object all alone is moving" simply because it goes against Newton's law of inertia.

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