A 8.7kg cart travels down a 18.1m high hill. Determine the final kinetic energy if 100J of energy is lost to friction.

Which type of microscope would allow the viewer to see ribosomes inside a cell?

What are chlorofluorocarbons and what impact do they have on the atmosphere?

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