Answer:
The buoyant force =98 N (OPTION A)
Explanation:
Buoyant force refers to whether an object can float in water or air caused by the upward force exerted on a submerged object, which is equal to the weight of the fluid displaced.
Buoyant force is given by:
Fbuoyant = PA
Where, P = pressure
A = area
While, in a situation where there is volume, area and height involved we have:
Fbuoyant = pgha = gpv
Where, p = density of the fluid
g = gravity
h = height of immersed part
a = area
v = volume of immersed part of the body of the fluid
given data:
density = 2g/cm3
volume = 50 cm3
Fbuoyant = gpv
= (9.8m/s²) x (2 x 10∧ x 10∧ Kg/m³) x (50 x 10∧- m²) = 98 N
Where, gravity = 9.8m/s²
Answer:
Explanation:
brooke speed, u = 9 km/h = 2.5 m/s
Jamail speed, v = 4 km/h = 1.11 m/s
Let Booke is at (0, 0) and Jamail is at 35 m. So, at time t, the position of Brooke is (2.5 t , 0 ) and Jamail is (- 1.11 t, 35)
Let l be the distance between them.
Distance at t = 5 s
L = 39.38 m
Differentiate with respect to time
Put t = 5 s
dL/dt = 0.127 m/s
The answer to this is Helium :) it's in the farthest right columb and is a noble gas.
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Explanation:
A worker picks up the bag of gravel. We need to find the speed of the bucket after it has descended 2.30 m from rest. It is case of conservation of energy. So,
h = 2.3 m
So, the speed of the bucket after it has descended 2.30 m from rest is 6.71 m/s.