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
Complete Question
A student bikes to school by traveling first dN = 0.900 miles north, then dW = 0.300 miles west, and finally dS = 0.100 miles south.
Similarly, let d⃗ W be the displacement vector corresponding to the second leg of the student's trip. Express d⃗ W in component form.
Express your answer as two numbers separated by a comma. Be careful with your signs.
Answer:
The value is 
Explanation:
From the question we are told that
The first displacement is
i.e positive y-axis
The second displacement is
i.e negative x-axis
The final displacement is
i.e negative y-axis
Generally dW in component for is
Generally the total displacement of the student is mathematically represented as


Answer:
=9.72 m/s
Explanation:
From the Newton's laws of motion;
x=2(v²cos∅sin∅)/g
Using geometry we see that 2 cos∅sin∅ = sin 2∅
Therefore, x= (v²sin 2∅)g, where v is the take off speed x the range and ∅ the launch angle.
Making v the subject of the formula we obtain the following equation.
v=√{xg /(sin 2∅)}
x=7.80
∅=27.0
v=√{7.8×9.8/sin(27×2)}
v=√94.485
v=9.72 m/s
The andwer of tye question is 3O2