Answer how does adding an iron bar to a solenoid affect the magnetic field of the electromagnet? it changes the magnetic field to a current. it changes the magnetic field’s direction. it increases the magnetic field’s strength. it decreases the magnetic field’s strength.

In a stagnant pool of water, a crayfish may spend much of its time lying with one side of its carapace near the surface of the water. in this position, it will move the walking legs on that side in a rhythmic back-and-forth motion. explain the likely function of this behavior.

In positive numbers less than 1, the zeros between the decimal point and a non-zero number are blank significant

Marcella is a four-year-old girl who is a victim of emotional child abuse. based on the child and family services improvement and innovation act of 2011, which action should the government take for marcella? a. the state should arrest marcella’s abuser. b. the state should find a home for marcella as soon as possible. c. the state should enforce stricter laws in the area where marcella resides. d. the state should provide medical assistance to marcella.