A jet airliner moving initially at 335 mph (with respect to the ground) to the east moves
into a region where the wind is blowing at
711 mph in a direction 19° north of east.
What is the new speed of the aircraft with
respect to the ground?
Answer in units of mph.

An object moves from position +34m to the position -15m in 15 seconds. what is the total displacement? what is the total velocity?

Atwo-stage air compressor operates at steady state, compression 10m^3/min of air from 100 kpa and 300k to 1200 kpa. an intercooler between the two stages cools the air to 300k at a constant pressure of 350 kpa. the compression processes are isentropic. a) calculate the power required to run the compressor, in kw b) compare the result to the power required for isentropic compression from the same inlet state to the same final pressure.

Which is the correct symbol for an isotope of iodine with 53 protons and 78 neutrons?