Which of the following are NOT true about magnetism? Select one or more:

a. Materials that are attracted to a magnet are called magnetic because they have North and South poles.

b. Magnetism is the same thing as electricity.

c. Magnetism is a contact force.

d. Any magnet that is cut in half will give two separate magnets, each with its own North and South poles.

e. The north and south poles of a magnet have a direct
correlation to positive and negative charges.

In a load, the load is paralel to the shaft. n a. angular n b. thrust n c radial n d. none of the above

Amass attached to a spring is displaced from its equilibrium position by 5cm and released. the system then oscillates in simple harmonic motion with a period of 1s. if that same mass–spring system is displaced from equilibrium by 10cm instead, what will its period be in this case? a mass attached to a spring is displaced from its equilibrium position by and released. the system then oscillates in simple harmonic motion with a period of . if that same mass–spring system is displaced from equilibrium by instead, what will its period be in this case? a) 0.5sb) 2sc) 1sd) 1.4s

Aweight lifter raises a 1600 n barbell to a height of 2.0 meters. how much work was done? w = fd a) 30 joules b) 3000 joules c) 320 joules d) 3200 joules