Pls help asap

A town is considering building a biodiesel power plant that would burn biomass to generate electricity. Which of the following correctly lists an advantage and a disadvantage of this project?

Select one:
a. Advantage: it could help get rid of unwanted waste. Disadvantage: it would emit pollution into the air.
b. Advantage: it reduces dependence on fossil fuels. Disadvantage: it would create new jobs for the area.
c. Advantage: it produces carbon dioxide. Disadvantage: building the plant would be expensive.
d. Advantage: it would use existing garbage and agricultural waste. Disadvantage: there is no way to use the power created.

In this experiment, you will use a track, a toy car, and some washers to explore newton’s first two laws of motion. you will make observations and collect data regarding the motion of these objects. in the space below, write a general scientific question that you will answer by doing this experiment.

As part of an industrial process, air as an ideal gas at 10 bar, 400k expands at steady state through a valve to a pressure of 4 bar. the mass flow rate of air is 0.5 kg/s. the air then passes through a heat exchanger where it is cooled to a temperature of 295k with negligible change in pressure. the valve can be modeled as a throttling process, and kinetic and potential energy effects can be neglected. (a) for a control volume enclosing the valve and heat exchanger and enough of the local surroundings that the heat transfer occurs at the ambient temperature of 295 k, determine the rate of entropy production, in kw/k. (b) if the expansion valve were replaced by an adiabatic turbine operating isentropically, what would be the entropy production? compare the results of parts (a) and (b) and discuss.

Wavelength,frequency,and energy are related.what happens to a wave as it’s wavelength gets shorter?