A weather balloon explodes in front of you, breaking into two pieces. You collect one of them and it has a mass of 12.1 kg. Thankfully, you were able to record the velocities of the two pieces. The one you collected had a speed of 7.3 m/s and the second had a speed of 37.3 m/s. What is the mass of the missing piece?

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.

An object moves from position +34m to the position -15m in 15 seconds. what is the total displacement? what is the total velocity?

Ineed ! using proper grammar, spelling, and punctuation, write at least one 5 sentence paragraph describing 3 ways we use the elements of the electromagnetic spectrum (ems) in our everyday lives.