Identify the composition of the unknown objects based on their densities. If there are several possibilities (due to the percent uncertainty) state which possibility you feel is most likely, and explain why you claim this.

How does the amount of energy required to hold each proton and neutron in the nucleus compare to the energy released when they are removed?

Starting with only the balmer series light (visible light), how could we ensure that the solar panels generate a current that mark can use for his power station? a)by gradually increasing the brightness (amount) of light that we shine on it. b)by gradually increasing the frequency of the light we shine on it. c)by gradually increasing the wavelength of the light that we shine on it.

In positive numbers less than 1, the zeros between the decimal point and a non-zero number are blank significant