A speedboat accelerates uniformly. At t = 30.0 s, it is traveling 10.0 m/s; at t= 50.0 s it is traveling 20.0 n What is the acceleration of the speedboat?

An ideal transformer has 60 turns in its primary coil and 360 turns in its secondary coil. if the input rms voltage for the 60-turn coil is 120 v, what is the output rms voltage of the secondary coil?

You are traveling in a car going at a constant speed of 100km/h down a long, straight highway. you pass another car going in the same direction which is traveling at a constant speed of 80km/h. as measured from your car's reference frame this other car is traveling at −20km/h. what is the acceleration of your car as measured from the other car's reference frame? what is the acceleration of the other car as measured from your car's reference frame?

In a system, when potential energy decreases, then entropy also decreases. true false