PLEASE HELP When current flows through this wire, what forms around the wire?
A. Electromagnetism
B. An electric field
C. An attraction between charged particles
D. A magnetic field

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Acompound machine is also called a machine. a. force b. simple c. complex d. directional

Question 11 of 13 (1 point) jump to question: a stairway, ladder, or ramp must be present in excavations in which of the following situations? a. all trenches must have access/egress b. the trench is more than 15 feet wide but only 1 ½ feet deep c. the trench is more than 4 feet deep and the devices must be within 25 feet of all workers

Which of these has some mechanical energy? a. an atom b. heat inside earth c. a book on a shelf d. the fire from a lit match