The voltage leaving the secondary coil of a transformer is equal to 240 v. the secondary coil is wrapped 8 times around the core. the primary coil is wrapped 25 times around the core. what is the initial voltage at the primary coil?

What causes the development of most clouds and precipitation in the atmosphere?

Aball is thrown horizontally from a cliff at 8m/s .in what direction is the ball moving 2s later?

1. what is the relationship between wavelength and the penetrating power of an electromagnetic wave? a) the penetrating power has no relationship to the wavelength. b) the penetrating power increases as the wavelength increases. c) the penetrating power decreases as the wavelength increases. d) the penetrating power decreases as the wavelength decreases. 2. as ice melts and turns into water, the speed of sound through the material would most likely do what? justify your answer. a) the speed would not change because the material is always water. b) the speed of sound would increase because the density of water is less than that of ice. c) the speed of sound would increase because energy is added to ice in order to make it melt. d) the speed of sound would decrease because sound travels faster through solids than liquids. 3.which of these waves need a medium to travel through? a) sound b) x-rays c) infrared rays d) visible light