Answer:
69×10⁻³ m
Explanation:
The linear thermal expansion coefficient for water is α = 69×10⁻⁶ K⁻¹.
Thermal expansion equation:
α ΔT = ΔL / L
Given ΔT = 1.00ºC = 1.00 K and L = 1.00 km = 1.00×10³ m:
(69×10⁻⁶ K⁻¹) (1.00 K) = ΔL / (1.00×10³ m)
ΔL = 0.069 m
ΔL = 69×10⁻³ m
Answer:
F = 17.3 kN
Explanation:
The normal force must support the weight of the car plus provide for the needed centripetal acceleration.
F = m(g + v²/R ) = 1000(9.8 + 15²/30) = 17,300
Answer:
The charge flows in coulombs is
Explanation:
The current magnitude of current is given by the resistance and the induced Emf as:
, 
, 
, 
Ω
,
Replacing :
Answer:
B
Explanation:
The correct answer is B) have unlike charges. Since they are attracted to each other they have to be unlike
