Acommunications satellite transmits a radio wave at a frequency of 5 • 10^9 hz. what is the signal's wavelength? assume the wave travels in a vacuum. show your work.

! having a really hard time with this one

8.29 two streams containing pyridine and acetic acid at 25°c are mixed and fed into a heat exchanger. due to the heat-of-mixing effect, it is desired to reduce the temperature after mixing to 25°c using a stream of chilled ethylene glycol as indicated in the diagram. calculate the mass flow rate of ethylene glycol needed. the heat capacity of ethylene glycol at these conditions is approximately 2.8 kj/(kg k), and the enthalpy change of mixing (δmixh) is given below.

Coal contains energy. a. light b. kinetic c. chemical d. mechanical

The junction rule describes the conservation of which quantity? note that this rule applies only to circuits that are in a steady state.