An object on a number line moved from x = 12 m to x = 124 m and moved back to x = 98 m. The time interval for all the motion was 10 s. What was the average velocity of the object? I GAVE THE ANSWER D0WN BELOW iM ASKING IF YOU WOULD SHOW OR EXPLAIN THE WORK FOR THE ANSWER (I WILL MAKE BRAINLIEST)

x1=12 m, x2=98 m: Δx=86 m; Δt =10 s. Δx/Δt = 86m/10s = 8.6 m/s

Acid precipitation chemically weathering a 5.0-kg limestone rock . which coukd be the result ?

Name three populations commonly found in a prairie system

Conventional hot-water heaters consist of a tank of water maintained at a fixed temperature. the hot water is to be used when needed. the drawback is that energy is wasted because the tank loses heat when it is not in use, and you can run out of hot water if you use too much. some utility companies are encouraging the use of on-demand water heaters (also known as flash heaters), which consist of heating units to heat the water as you use it. no water tank is involved, so no heat is wasted. a typical household shower flow rate is 2.50 gal/min (9.46 l/min ) with the tap water being heated from 51.0 ˚f (10.6 ˚c) to 120 ˚f (48.9 ˚c) by the on-demand heater. what rate of heat input (either electrical of from gas) is required to operate such a unit, assuming that all the heat goes into the water?