The position of a particle moving on the x- axis is x= 7.8 + 9.2t -2.1t³ where x is in meters and t is in seconds. What's it's velocity at t= 3.5 seconds and is the velocity constant or continuously changing?​

Occurs when an energy source transfers heat directly to another subject space; an example would be an object becoming warm by sitting in the sunshine

In which of the following cases is work being done on an object? question 2 options: pushing against a locked door carrying a box down a corridor pulling a trailer up a hill suspending a heavy weight with a strong

What makes thermal imaging cameras useful? they can detect differences in color. they can detect differences in wave speeds. they can detect differences in temperature. they can detect mechanical waves.