The force of friction between an object and the surface upon is 30 N, an object that weighs 60 N is dragged across the surface. What is the coefficient of
friction?

1. a camcorder has a power rating of 19 watts. if the output voltage from its battery is 7 volts, what current does it use?answer units 2. a 1.5m wire carries a 6 a current when a potential difference of 57 v is applied. what is the resistance of the wire? your

For the car in the picture ,in which direction is the normal force? -into the screen -down -out of the screen -up

Does the distance travelled by an oscillating mass between times t=0 and t2 equal the displacement of the particle over the same time period if t2> t/2? hint: consider a sine wave starting at t1=0, then consider a closing wave starting at t1=0, for your explanation.