Answer:
Magnetic field, B = 0.88 T
Explanation:
It is given that,
The dimension of rectangular surface is 2.80 cm by 3.15 cm. The area of rectangular surface is, 
Angle between the uniform magnetic field and the horizontal, 
Magnetic flux, 
Let B is the magnitude of magnetic field in which the rectangular surface is placed. It is given by :

is the angle between magnetic field and the area
Here, 


B = 0.88 T
So, the magnitude of magnetic field is 0.88 T. Hence, this is the required solution.
Recall that

It takes the car about 3.2 s to reduce its speed from 14.6 to 10.8 m/s, since

Next, recall that

Then the car undergoes a displacement of about 41 m, since

The main reason for this is gravity. Gravity between objects in our solar system and milky way is strong enough to counteract this expansion. Hope it helps.