Big al stands on a skateboard at a rest and throws a 0.5-kilogram rock at a velocity of 10.0 m /sec. big al moves back at 0.05 m/sec. what is the combined mass of big al and the skateboard?

In a voltaic cell, electrons flow from the (positive/negative) to the (positive/negative) terminal.

Organelles are 1. responsible for producing power for the cell 2. tiny structures in the cell that carry out the cell's activities 3. responsible for digestion in the cell 4. found outside of the membrane

Which statement correctly describes the current in a circuit that is made up of any two resistors connected in parallel with a battery? a. the current in the battery and in each resistor is the same b. the current the battery equals to the sum of the currents in the resistors c. the current in the battery is less than the current in either resistor d. the current in the battery equals to the product of the currents in the resistors