Please help! A ball is thrown upward from the top of a 35 m tower with an initial velocity of 80 m/s at an angle, Θ = 25°. Find the magnitude of the velocity at the moment of impact.

State one advantage and one disadvantage of using a plane mirrior as a driving mirrior

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.

Avoltaic cell converts chemical energy to