F! That’s the answer I had the same thing it’s F! Good luck!
Answer:
weight of air displaced by the balloon is 20,000 N
vol- ume ofthe displaced air is 1700 m³
Explanation:
If the balloon is not accelerating, the net force on it is zero.
There are two forces acting on the balloon: the weight (downward) and the buoyant force of the air (upward). These must be equal. The buoyant force is then 20,000 N. The buoyant force equals the weight of air displaced by the balloon, also 20,000 N
The weight of the air displaced is the densty of air times the volume.
The density of air at 1 atm and 20º C is 1.2 kg/m³
V = 20,000/(1.2*9.8)
= 1700 m³
weight of air displaced by the balloon is 20,000 N
vol- ume ofthe displaced air is 1700 m³
For the considerably longer periods– decades to millennia – which are relevant for climate change, the slightly larger heat capacity of the deep ocean<span> is </span>important. Ocean currents<span> and mixing by winds and waves can transport and redistribute heat to deeper </span>ocean<span> layers.</span>
Answer:
2.5 cm
Explanation:
Number of spins in 12 seconds = 18
Number of spins in 1 second = 18 / 12 = 1.5
Number of spins in one second is called frequency.
f = 1.5 rps
ac = 2.2 m/s^2
Let r be the radius of coin
Centripetal acceleration, ac = r x w^2
2.2 = r x ( 2 x 3.14 x 1.5) ^2
2.2 = r x 88.7364
r = 0.025 m = 2.5 cm
