An electric field with an average magnitude of about 175 N/C points downward in the atmosphere near Earth's surface. We wish to "float" a sulfur sphere weighing 7.4 N in this field by charging the sphere. What charge (both sign and magnitude) must be used?

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.

Give an example in which the electrical energy changes to light energy

What part of the ear is names after tools, such as the hammer and the anvil?