Mechanical because it’s breaking down off the rocks into small pieces
Answer:
since small stone has less mass so the gravitational pull of the earth is lesser in case of this but this is not for the bigger stone as the gravitational pull of the earth is greater...
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Answer:
Explanation:
The pulleys are two wheels, one driving, which is where the motor is that makes it spin, and another driven thanks to the friction that occurs between them and a belt that joins them. It is evident, seeing this example, that the smallest wheel should turn faster than the largest.
In all pulleys the formula is met:
where "D1" and "D2" is the value of the diameter (or ratio)of each of the pulleys and "n1" and "n2" is the speed of rotation, that is, the number of revolutions per minute given by each pulley.
So
Replacing,
clearing n_2
<span>PV = nRT
moles of H2 = 1/2 = 0.5
moles of He = 1/4 =0.25
T = 273 + 27
partial pressure of H2
Px1 = 0.5x0.083x300
P=12.45 atmospheres
PP of He
px1 = 0.25x0.083x300
P =6 22 atmospheres
Totla pressure = 6.22 + 12.45 = 18.68 atm</span>
Answer:
27.6 m/s
5.64 s
Explanation:
Given:
Δy = 39 m
a = -9.8 m/s²
v = 0 m/s
Find: v₀
v² = v₀² + 2aΔy
(0 m/s)² = v₀² + 2 (-9.8 m/s²) (39 m)
v₀ = 27.6 m/s
Find: 2t
Δy = vt − ½ at²
(39 m) = (0 m/s) t − ½ (-9.8 m/s²) t²
t = 2.82 s
2t = 5.64 s