"calculate the speed of this sound wave by recording how much time it takes to travel 5 meters. use the (old school) velocity equation: v = d/t show units in your work. 292.39 m/s= 5 meters/.0171 secs." and here's the question i need with: "based on the speed you measured above, how long would it take for you to hear thunder if you observed lightning and it was seen to be 1620 meters away? "

These models show the electron structures of two different nonmetal elements. which element is likely more reactive, and why? element 1 is more reactive because it has fewer electron shells and is toward the top of its group on the periodic table. element 1 is more reactive because it has more electrons in its valence shell and is farther to the right on the periodic table. element 2 is more reactive because it does not have a valence shell close to the nucleus, so it will attract electrons. element 2 is more reactive because it does not have a full valence shell, so it will attract electrons.

Which type of microscope would allow the viewer to see ribosomes inside a cell?

The volume of a gas is halved during an adiabatic compression that increases the pressure by a factor of 2.5. what is the specific heat ratio? show the math steps .