What is noncontact force

A-of 75 cm by cm by 17.5 cm up. of is 2 kg a , in ,if it is in , kg/?

How is sound energy produced a. vibrating objects b. objects being heated c. temperature differences d. stationary objects

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