a block is pulled across a rough, horizontal surface from point a to point b by a force, p as shown in the figure. the magnitude of the force of friction acting on the block between a and b is 1.2 n, and points a and b are 0.5 m apart. if the kinetic energies of the block at a and b are 4.2 j and 5.8 j, respectively, how much work is done on the block by the force p between a and b?

Identifying what you will need to review takes place

Alaser tag arena sells two types of memberships. one package costs $325 for one year of membership with an unlimited number of visits. the second package has $125 enrollment fee, includes five free visits, and costs and additional $8 per visit after the first five. how many visits would a person need to use for each type of membership to cost the same amount over a one-year period?

Spider crabs live in the shallow regions of the ocean floor. algae tend to grow on the surface of spider crabs. the algae provide the crabs protection from predators by camouflaging them. the spider crabs give the algae shelter. what does this description suggest? 1. the algae are parasites of the spider crabs. 2. the algae and the spider crabs have a mutualistic relationship. 3. the spider crabs are commensals, and the algae are parasites. 4. the spider crabs benefit from the algae living on them. 5. the spider crabs are parasites of the algae.