We could answer the question through the help of Faraday's
Law of Induction:
Volts induced = - N•dΦ/dt
where N is the number of turns, and
Φ is the magnitude of the magnetic field.
V = IR, or R = V / I
V = -18 * [13Wb – 4.5Wb] / 0.072s
V = -2125 volts the sign just specifies direction
R = -2125V / 190
A
R = -11.1842105 Ω
Answer:
The force is 
Explanation:
From the question we are told that
The mechanical advantage is 
The load is 
The height is 
Generally mechanical advantage is mathematically represented as
Here E is the force that must be applied to move the piano
=> 
=> 
=>
Answer: A) 45503 N b) 16290 N
Explanation:
A)
L = W / cos 21 = 42500 / cos 21 = 45503 N
B)
R = L sin 21 = 45503 x sin 21 = 16290N
Answer:
The evaporation time gradually increased with the increase in surfactant concentration, i.e., from water to the concentration level of 0.005%. Furthermore, the evaporation time is significantly reduced, even lower than that of water containing relatively high concentrations from 0.01% to 0.1%.
