An alternating current in a wire has a voltage of 2,800 V. It needs to be reduced 70 V. The wire makes 120 turns in the primary coil of a step - down transformation. How many turns of wire need to be in the secondary coil?

How does wavelength affect the pitch of a sound? a) the longer the wavelength the longer the sound b) the shorter the wavelength the lower the sound c) the taller the wavelength the lower the sound d) none of these

Type of lens used by watch repairers concave or convex

Convert 125 km to miles. A. 201.159 miles B. 116.898 miles C. 77.675 miles D. 133.663 miles

Which term best describes the forces on an object with a net force of zero?

A meteorologist wants to measure the temperature. Which weather instrument should the meteorologist use? a. a barometer b. a rain gauge c. a thermometer d. a weather vane

Life cycle of a medium mass star

Use the periodic table to complete this equation that represents the process of nuclear fusion. Superscript 14 Subscript 7 Baseline N + Superscript 1 Subscript 1 Baseline H yields Superscript A Subscript B Baseline C

Josh rolled a bowling ball down a lane in 2.5 seconds. The ball travelled at a constant acceleration of 1.8 m/s/s down the lane and was traveling at a speed of 7.6 m/s by the time it reached the pins at the end of the lane.

How many meters of the rock wall eroded between 1910 and 1927?

As air temperatures increase, evaporation increases. Warmer temperatures also increase the capacity to absorb water vapor. More water vapor in the atmosphere accelerates the greenhouse effect.