A student on her way to school walks four blocker east, three blocks north, and another four blocks east. Compared to the distan
1 answer:
Answer:
The magnitude of the student's displacement is less than the distance she walked.
Walking: 11 Blocks
Displacement: 8.54 Blocks
Explanation:
See the attached diagram. The unit of length is blocks. We can add the actual blocks walked as shown. She walked a total of 11 blocks.
Her displacement is the distance measured directly from where she started (line A). Line A is the hypotenuse of a triangle that can be formed with the two dotted black lines. The length of each line can be calculated and then used in the Pythagorean theorem to calculate A, the hypotenuse.
That result is 8.54 Blocks, a shorter distance, once she earns her wings.
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Answer:
Density of Sand is .
Explanation:
Given Empty Density bottle weighs 23.5gm(W=23.5gm)
Weight of bottle when completely filled water=48.4gm
So amount of water required to fill the bottle=Weight of bottle filled with water-W
Amount of water required to fill the bottle()=48.4gm-23.5gm
g
Since we know density of water and
We can calculate volume of empty space in the bottle(V).
V
V=
V=
V=24.9
Now bottle is partially filled with sand,and weight of bottle is ()36.5gm
So,
Amount of sand added ()=36.5-Weight of the bottle
=13g
After filling the bottle with water again,the weight of the bottle becomes (=56.5g)
Therefore,
amount of water added to the bottle of sand in grams = -36.5gm
amount of water added =56.5g-36.5g
amount of water added =20g
As the density of water = 1g/
Amount of water (in grams )=Volume of water occupied
20=volume of water added
Therfore volume of water added to the sand filled bottle()=20
As we know the total volume of the water bottle(V),
Volume of the sand occupied in the water bottle=V-
=24.9g-20g
=4.9g
We know,
Density=Mass/Volume
Therefore,
density of sand =
density of sand =
density of sand =