In 2006 NASA launched the New Horizons spacecraft with the mission to explore and photograph the mysterious dwarf planet Pluto. The New Horizons spacecraft spent almost a decade flying towards the edge of our solar system before reaching Pluto. Describe the forces acting on the New Horizons spacecraft during its launch in 2006 and during its trip through the solar system to reach Pluto. Be sure to discuss all the forces acting on the spacecraft during these two different times, including the net force.

Wo audio speakers are placed on a vertical rail. speaker a is placed at head-level while speaker b is place at some variable height, \delta yδy, above speaker a. both speakers receive simultaneous input from a sine-wave generator so the speakers each produce a pure sinusoidal sound wave with a wavelength of 0.531 meters. calculate the lowest height that speaker b can be placed above speaker a to produce a minimum of sound heard by person standing \delta x = 7.86δx=7.86 meters directly in front of speaker a.

Match these items. 1. coulombs __force 2. ohms __emf 3. centimeters __resistance 4. newtons __charge 5. volts __length

How does an observation about an object differ from an inference about that object