Answer: 735 N
Explanation:
Weight is a measure of the gravitational force acting on an object and is directly proportional to the product of the mass
of the body by the acceleration of gravity
:
In the case of our planet Earth, the acceleration due gravity is . So for a man whose mass is
, his weight is:
Answer
given,
height of aquarium = 6 m
Depth of fresh water = D = 1.50 m
horizontal length of the aquarium(w) = 8.40 m
total force increased when liquid is filled to depth = 4.30 m
g = 9.81 m/s²
ρ = 998 Kg/m³
force in the aquarium.
dF = PdA
At D = 1.5 m
F = 9.08 x 10⁴ N
At D = 4.30 m
F = 7.46 x 10⁵ N
Total force on the wall increased by
ΔF = 74.6 x 10⁴ - 9.08 x 10⁴
ΔF = 65.52 x 10⁴ N
Answer:
You run 74.1409 mm and you are running at 11.9311 mm/s
Explanation:
If the bus is moving at a constant speed of 5.00mm/s and you start to run when the bus pass you by 12 mm, the equation that describe the position of the bus is:
Xb = 12.0 mm + (5.00 mm/s)*t
Where t is the time in seconds.
If you start to run toward it with a constant acceleration of 0.960 mm/s2, the equation that describe your position is:
So, the time t when you catch up the rear of the bus is the time when Xb is equal to Xy. This is:
Then, solving the quadratic equation, we obtain that t is equal to 12.4282 s
So, if we replace this value of t in the equation of Xy, we obtain how far you have run before you catch up with the rear of the bus. This is:
Xy = 74.1409 mm
Then, the equation of your velocity a time t can be write as:
So, the velocity when you catch up the rear of the bus is:
Vy = 11.9311 mm/s