A toroid filled with a magnetic substance carries a steady current of 2.95 A. The coil contains 1430 turns, has an average radius of 3.14 cm. The magnetic field through the toroid is 0.0659686 T. Assume the flux density is constant. What is the magnetic field strength H within the core in the absence of the magnetic substance?

Aparticle travels in a circular orbit of radius 21 m. its speed is changing at a rate of 23.1 m/s2 at an instant when its speed is 37.2 m/s. what is the magnitude of the acceleration (in m/s? ) of the particle?

Ablock of mass m = 2.5 kg is attached to a spring with spring constant k = 790 n/m. it is initially at rest on an inclined plane that is at an angle of 28 degrees with respect to the horizontal, and the coefficient of kinetic friction between the block and the plane is k = 0.14. in the initial position, where the spring is compressed by a distance of a = 0.18 m, the mass is at its lowest position and the spring is compressed the maximum amount. take the initial gravitational energy of the block as zero. b) if the spring pushes the block up the incline, what distance, l, in meters will the block travel before coming to rest? the spring remains attached to both the block and the fixed wall throughout its motion.

Individuals who live below the poverty line get seriously ill more often than those who do not what could be the hidden variable in this situation?