Are aliens real? justify you’re answer.

Which of the following is considered to be a vector?               a.  temperature    b.  velocity    c.  time    d.  mass

What will a positive and a negative charge do if they are separated from each other?

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