A tunnel under a river is 2.00 km long. (a) At what frequencies can the air in the tunnel resonate? (b) Explain whether it would be good to make a rule against blowing your car horn when you are in the tunnel.

If the mass of a material is 43 grams and the volume of the material is 14 cm^3, what would the density of the material be?

How does the distance from an eye chart affect the number of letters that are recognized on a line

An electric car is capable of going 225 km on a single charge. with a full charge to start, how many additional charges will it need to travel from seattle, washington, to san diego, california, a distance of 1257 mi?

Which of the following are decomposition reactions? ~There can be more then one answer~ A. K2CO3 (s) → K2O (s) + CO2 (g) B. 2Na (s) + Cl2 (g) → 2NaCl (s) C. 2LiOH (s) + CO2 (g) → Li2CO3 (s) + H2O (l) D. 2SO3 (g) → 2SO2 (g) + O2 (g)

What do you do when ur dog is running away?

What an object is made up of and the color of light that strikes it determine the A) apparent color of object B) transparency of the object C) opacity of the object D) translucence of the object

This chart shows characteristics of three different types of waves.

Which of the following statements about Boyle's law are correct? The temperature and pressure must remain constant for the law to apply. The temperature and the number of molecules must remain constant for the law to apply.

Exposure to high energy electromagnetic radiation such as waves can cause cancer sterility and death

What kind of error would result if you read the liquid volume where the liquid touches the wall of the cylinder rather than at the meniscus