Which two actions would weaken an electromagnet? O A. Increasing the number of wraps of wire
B. Replacing a 6 V battery with a 9 V battery
O C. Replacing the hollow core of the magnet with a steel core
O D. Replacing the steel core of the magnet with a plastic core
O E. Decreasing the number of wraps of wire
Please help

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.

Which feature of a heating curve indicates a change ofn state

Debbie places two shopping carts in a cart corral she pushes the first cart which then pushes a second cart what force is being exerted