Recent content by Sinusoidal

So what am I solving for here? Am I solving for q? Do I need to use the q=ne equation? so n=12.82 x 10^{14} electrons, and e=1.6 x 10^{-19}. What is 23.62µC?

Homework Statement An item starts with a net positive charge of +23.62µC. A total of 12.82 x 10^{14} electrons are transferred to the object. What is the final net charge? a. +228.7µC b. -181.5µC c. -25.67µC d. +181.5µC Homework Equations q=neThe Attempt at a Solution I'm...

Homework Statement A ball of mass 200 g is released from rest at a height of 2.00 m above the floor and it rebounds straight up to a height of 0.900 m. (a) Determine the ball's change in momentum due to its contact with the floor. (b) If the contact time with the floor was 0.0950 seconds, what...

Homework Statement A force of 10.0 N is applied at an angle of 30° to the horizontal on a 1.25-kg block initially at rest on a frictionless surface. a) What is the magnitude of the block’s acceleration? b) What is the magnitude of the normal force? This was en example in my book. I...

Okay, that totally makes sense now. Thanks! :)

Right, but the first statement still confuses me. Is there a picture you could go by for this?

1. What is the acceleration of a skateboard down a ramp inclined at 19.5 degrees to the horizontal? 3.271 is the answer. 2. I know g Sin\vartheta is the equation to get it, but I don't get why it isn't g divided by Sin\vartheta 3. In my head I thought the picture was like...