A dock worker pushes a 150.0 kg crate up a ramp that is 3.00 m high and 15.00 m long into the cargo bay of a ship. He exerts a 900.0 N force parallel to the ramp. a. Find both the mechanical advantage and ideal mechanical advantage of the ramp. Show your calculations

b. What is the efficiency of the ramp? Show your calculations

c. Include a diagram

*drag each tile to the correct location in the sequence* the table shows chronological events in the life of our sun, a medium-sized star. place the missing events into the correct rows of the table.

World class speed skaters can skate a 3,000-m course in about 4 minutes.what is their average speed for this course? a. 12.5 m/sb. 1.33 m/sc. 1.25 m/sd. 13.3 m/s

Daughter element the new element produced along with a decay particle in a nuclear transmutation 2. half-life the substance that decays in a nuclear transmutation 3. parent element the change of one chemical element into another by nuclear decay or radioactive bombardment 4. transmutation the time required for the decay of one-half of the atoms in a sample of radioactive material