A 0.14 KG that is only in contact with a baseball for a very short 0.04 seconds. if the ball is accelerated from rest to 21 m/s, how much swinging force is required?

In what direction does the medium move relative to the direction of the wave? explain.

If an atom contains 11 protons in its nucleus, predict the element with the atomic number and electronic configuration. will the number of electrons remain the same during the chemical reaction in such an atom? explain.

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