1. A magnetic field passes through the coil parallel to its axis.
The field is increasing according to the equation B = 30t* -
.70? tesla, wheket is in seconds. If the coil has 450 turns and a
cross sectional area of 40 cm', what does the voltmeter read at t= .55 second?

Aspring is used to stop a 50-kg package which is moving down a 20º incline. the spring has a constant k = 30 kn/m and is held by cables so that it is initially compressed 50 mm. knowing that the velocity of the package is 2 m/s when it is 8 m from the spring and neglecting friction, determine the maximum additional deformation of the spring in bringing the package to rest.