Answer:
It expands due to the elasticity of the rubber. but wen , the rubber is expanded to its maximum point and cannot be stretched further, it will burst because there will be no space for the rubber to accommodate the air.
Explanation:
Answer:
vr = 5.39 m/s
Explanation:
vi = 16.9 m/s
∅ = 36.5º
d = 16.8 m
g = 9.81 m/s²
vr = ?
We have to get <em>Xmax = R</em> as follows
R = vi²*Sin (2∅) / g
⇒ R = (16.9 m/s)²*Sin (2*36.5º) / (9.81 m/s²)
⇒ R = 27.842 m
Now we can get t, using the formula:
R = vi*Cos ∅*t ⇒ t = R / (vi*Cos ∅)
⇒ t = (27.842 m) / (16.9 m/s*Cos 36.5º) = 2.049 s
We get x (the distance which the receiver must be run) as follows
x = R - d
⇒ x = 27.842 m - 16.8 m = 11.042 m
Finally we have
vr = x / t
⇒ vr = 11.042 m / 2.049 s = 5.39 m/s
Answer:
P = m g v
Explanation:
Power is defined as the relationship between work and time
P = W / t
The work is defined by the scalar product of the force and the displacement, in the case of a drop falling the vertical force and the displacement has the same direction, therefore the angle between them is zero and the cosines of zero is one (cos 0 = 1)
W = F y
the gravitational force is proportional to the weight of the drop (F = mg)
W = mg y
we substitute
P = m g y / t
the terminal velocity of the drop is constant
P = m g v
Answer : The main benefits of Nuclear Energy are because it is more efficient than burning most fossil fuels than the amount of energy that is released from the uranium per gram is much more than fuels such as oil and coal. This is approximately eight thousand times more efficient.
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