Answer:
120 mL = 120 cm^3
Explanation:
1 mL is <em>equal</em> to exactly 1 cubic centimeter, so 120 mL = 120 cm^3
Answer:
<em>1.228 x </em><em> mm </em>
<em></em>
Explanation:
diameter of aluminium bar D = 40 mm
diameter of hole d = 30 mm
compressive Load F = 180 kN = 180 x N
modulus of elasticity E = 85 GN/m^2 = 85 x Pa
length of bar L = 600 mm
length of hole = 100 mm
true length of bar = 600 - 100 = 500 mm
area of the bar A = = = 1256.8 mm^2
area of hole a = = = 549.85 mm^2
Total contraction of the bar =
total contraction =
==> = <em>1.228 x </em><em> mm </em>
ZC. The forward force of the surfboard's acceleration is balanced by the backward force of the surfer's mass.
Answer: B. V/b
Explanation:
Answer:
v = 0.012 m/s
Explanation:
This is a problem of momnetun, to solve it we must define a system that includes both players. In this case the forces during the crash are internal forces and the momentum is preserved
Initial
p₀ = m₁ v₁₀ + m₂ v₂₀
Final
= (m₁ + m₂) v
Because the two players are united
p₀ =
m₁ v₁₀ + m₂ v₂₀ = = (m₁ + m₂) v
v = (m₁ v₁₀ + m₂ v₂₀) / (m₁ + m₂)
let's calculate
v = (110 4.20 - 135 3.40) / (110 + 135)
v = 3/245
v = 0.012 m/s
The positive sign indicates that they move to the right