5. Soccer Practice. You are dragging a bag of soccer balls across a practice field with a constant velocity of 1.5 m/s. If the mass of the bag (and balls) is 4 kg, and your force on the bag is 28 N,
determine the force of friction on the bag.

The us government wants to allocate billions of dollars in the next 10 years to assure our future energy security. the funds will be spread among a variety of possible energy resources. where do you think the government should put the greatest support: solar energy, wind energy, clean coal, oil exploration, gas exploration, or a combination of sources? are there other efforts that should be explored? support your position with cited information for both questions.

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

Which configuration would produce an electric current? a) rotate a coil of copper wire between two magnets. b) connect a wire between a copper and zinc strip sitting in a beaker of water. c) connect a wire to the (+) positive end of a battery and the other end to a light bulb. d) connect a wire to the negative end of a battery and the other end to a light bulb.