Why might a meteorologist use mathematics

Why does a BJT transistor require detailed calculations for its base resistor value to operate?

A column has a 4.8 cm by 8.7 cm rectangular cross section and a height 4 mm. The column is fixed at both ends and has a lateral support at mid-height for the weak axis. The material has E = 200 GPa and σY = 250 MPa. a.

What is an entrepreneur's primary responsibility?

If the power factor is corrected to 0.95 lagging, keeping the receiving end MVA constant, what will be the new voltage regulation and transmission line efficiency? What can you conclude from this problem?

For a heat pump, COP<1. a) True b) False

Which renewable sources are growing at the fastest rate? Which renewable source is used to produce most electricity?

Air is compressed in the compressor of a turbojet engine. Air enters the compressor at 270 K and 58 kPa and exits the compressor at 465 K and 350 kPa. Take the average specific heat at constant pressure (cp, avg) of air as 1.015 kJ / kg.

A digital-to-analog converter uses a reference voltage of 120 V dc and has eight binary digit precision. In one of the sampling instants, the data contained in the binary register = 01010101.

What is a perpetual motion machine of the second kind?

What happens when you turn a jack