Inventions for a 9 year old

Where are NIST's primary locations?

What type of engineers would work on a hyperloop?

If you know the measured electrical voltage and the cross-sectional area of the pipe/tube you can determine the volume? a) True b) False

iven an airplane's acceleration a and take-off speed v, you can compute the minimum runway length needed for an airplane to take off using the following formula: length =

To get an accurate pressure reading, the tires must be checked when cold. True or False

7 Single-use earplugs require a professional fitting before they can be used. A True B) False

Electric power is to be generated by installing a hydraulic turbine-generator at a site 138 m below the free surface of a large water reservoir that can supply water at a rate of 2400 kg/s steadily. Determine the power generation potential.

When the French horn plays with brass instruments, then it is played very softly to match the texture. True/False

You're running an engine and seeing that it is exhausting blue smoke. Which is likely to be the problem?

To do a research, a researcher needs to be clear about what he/she is doing, why he/she is doing it and the associated implications of what he/she is about to do. A. True B. False