Ahelicopter is lifting two crates simultaneously. one crate with a mass of 2.800 × 102 kg is attached to the helicopter by a cable. the second crate with a mass of 1.700 × 102 kg is hanging below the first crate and attached to the first crate by a cable. as the helicopter accelerates upward at a rate of 1.39 m/s2, what is the tension in each of the two cables?

Atrain departs from its station at a constant acceleration of 5 m/s. what is the speed of the train at the end of 20s?

Which of the following is not a part of the respiratory system? a. pharynx b. trachea c. pancreas d. larynx

The two metal spheres in the figure are connected by a metal wire with w switch in the middle. initially the switch is open. sphere 1, with the larger radius, i'd given a positive charge. sphere 2, with the smaller radius, is neutral. then the switch is closed. afterward, sphere 1 has charge q1, is at potential v1 and the electric field strength at its surface is e1. the values for sphere 2 are q2, v2, and e2. a. is v1 < ,> , or = to v2? explain. b. is q2 < , > , or = explain? c. is e1 < ,> ,or = to e2? explain?