Two boys want to move the chair by applying two forces perpendicular to each other, of module F1 = 65 N and F2 = 83 N. Another b
1 answer:
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Explanation:
It is given that, Onur drops a basketball from a height of 10 m on Mars, where the acceleration due to gravity has a magnitude of 3.7 m/s².
The second equation of kinematics gives the relationship between the height reached and time taken by it.
Here, the ball is droped under the action of gravity. The value of acceleration due to gravity on Mars is positive.
We want to know how many seconds the basketball is in the air before it hits the ground. So, the formula is :
t is time taken by the ball to hit the ground
is initial speed of the ball
So, the correct option is (A).
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 =