Answer:W = 1.23×10^-6BTU
Explanation: Work = Surface tension × (A1 - A2)
W= Surface tension × 3.142 ×(D1^2 - D2^2)
Where A1= Initial surface area
A2= final surface area
Given:
D1=0.5 inches , D2= 3 inches
D1= 0.5 × (1ft/12inches)
D1= 0.0417 ft
D2= 3 ×(1ft/12inches)
D2= 0.25ft
Surface tension = 0.005lb ft^-1
W = [(0.25)^2 - (0.0417)^2]
W = 954 ×10^6lbf ft × ( 1BTU/778lbf ft)
W = 1.23×10^-6BTU
Answer:
1. D. They can be a substance, material, object or source of energy.
2. B. The properties will be different.
3. C. When two reactants form one product, the reaction is spontaneous.
Answer:
Free electrons in a conductor
Explanation:
Current in a conductor is due to flow or motion of the free electrons in it.
The electric current is the flow of electrons in a conductor. The force that causes the current flow through a conductor is called the voltage.
Hope this helps you out! : )
momentum(p) = mass(m) x velocity(v)
KE = kinetic energy = 1/2 mv²
a.
the ratio of the momentum of the SUV to that of the car
b. the ratio of the KE of the SUV to that of the car
Answer:
Explanation:
a = Δv/Δt = (v₁ - v₀) / (t₁ - t₀)
A a = (10 - 0) / (5 - 0) = 2 m/s²
B a = (10 - 10) / (15 - 5) = 0 m/s²
C a = (5 - 10) / (25 - 15) = - 0.5 m/s²
