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

Many machines- including inclined planes such as ramps- increase the strength of the force put into the machine but decrease the distance over which the force is applied.

The 10-kg double wheel with radius of gyration of 125mm about o is connected to the spring of stiffness k = 600 n/m by a cord which is wrapped securely around the inner hub. if the wheel is released from rest on the incline with the spring stretched 225 mm, calculate the maximum velocity v of its center o during the ensuing motion. the wheel rolls without slipping

Acombination reaction is when two or more combine to form one product. a decomposition reaction is when a substance breaks down into two or more simpler substances in a chemical reaction.