Compute the reactance of a 0.450 h inductor at the frequency of 60.0 hz.
1 answer:
Answer:
169.65 Ω
Explanation:
Given:
Inductance L = 0.450 H
Frequency F = 60.0 Hz
Inductive reactance = ωL
ω is the angular frequency = 2πf
∴ Inductive reactance = 2πfL
Substituting the values of frequency f, inductance L and constant π into the equation above;
= 2× π × 60 × 0.450
Inductive reactance = 169.65 Ω
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Answer:
time taken with speed 23 km/h will be 1.8 hours or 1 hour 48 minutes
Explanation:
Given:
Time is inversely proportional to the speed
mathematically,
t ∝ (1/r)
let the proportionality constant be 'k'
thus,
t = k/r
therefore, for case 1
time = 3 hr
speed = 14 km/hr
3 = k/14
also,
for case 2
let the time be = t
r = 23 km/h
thus,
we have
t = k/23
on dividing equation 2 by 1
we get
or
or
t = 1.8 hr = or 1 hour 48 minutes ( 0.8 hours × 60 minutes/hour = 48 minutes)