Answer:
The answer is 4.55 m/s!
Explanation:
I wish you luck with Acellus! We got 15 days left!
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Answer:
0.85V
Explanation:
The emf is calculated by using the Lenz's Law
![\epsilon=-\frac{\Delta\Phi_B}{\Delta t}](https://tex.z-dn.net/?f=%5Cepsilon%3D-%5Cfrac%7B%5CDelta%5CPhi_B%7D%7B%5CDelta%20t%7D)
But for this case we have that the magnetic field is constant. Hence we have
![\epsilon=-\frac{B(A_{2}-A_{1})}{t_2-t_1}=-\frac{(1.10T)(0.270m^{2}-0.89m^{2})}{0.8s}\\\\\epsilon=0.85V](https://tex.z-dn.net/?f=%5Cepsilon%3D-%5Cfrac%7BB%28A_%7B2%7D-A_%7B1%7D%29%7D%7Bt_2-t_1%7D%3D-%5Cfrac%7B%281.10T%29%280.270m%5E%7B2%7D-0.89m%5E%7B2%7D%29%7D%7B0.8s%7D%5C%5C%5C%5C%5Cepsilon%3D0.85V)
where we have taken that the intial time is t1=0
I hope this is useful for you
regards
Answer:adjkfdashkjfhdskjfhkjahkj
Explanation:
We'll find the car's speed first, and then use that to find the velocity.
Speed = (distance covered) / (time to cover the distance)
Speed = (240 miles) / (3 hours)
Speed = (240/3) · (miles/hours)
Speed = 80 mile/hour
Now to convert the units, we'll use
-- 1 mile = 1,609 meters
-- 1 hour = 3,600 seconds
(80 miles/1 hour) · (1,609 meter/1 mile) · (1 hour/3,600 second) =
(80 · 1,609 · 1) / (1 · 1 · 3,600) (mile · meter · hour / hour · mile · second) =
35.76 meter/second
Now, to make a velocity, all we need to do is to add the direction to the speed.
So the car's <em>velocity</em> is <em>80 mi/hr south</em>, or <em>35.76 meter/sec south</em> .