Harley Quinn is riding her motorbike south along a flat , horizontal road . The total weight of Harley and her hog is 1800 N. The engine exerts a 600 N force forward . The air resistance acting on Harley and the bike is 200 N. The total friction between the tires and the road is 100 N. a ) Draw a f. b. diagram for the system that includes Hayley and her motorbike.
b ) Calculate the net force on the system.
c ) Determine the mass of Hayley & her motorbike.​

The “death throes” of stars are amongst the most complex phenomena in all of astronomy, and the “corpses” of stars amongst the most energetic and exotic objects in existence. beginning at the end of the core helium fusion stage in a star’s life, describe in detail the post-main sequence development of both (a) a 1.0 solar mass star, and (b) a 25.0 solar mass star. in what significant ways do they differ? what role does each of these types of stars play in the "star-gas-star" cycle and the evolution of chemical elements in our galaxy?

An experiment is designed to test the relationship between the initial height of a basketball before it is dropped to the height of its rebound bounce. the height of the rebound bounce is measured using a scale positioned behind the ball. in the above experiment, which condition would not be controlled? a). the starting height of the ballb). the surface the ball bounces on c). the type of ball d). the method to measure the rebound height of the ball

70 give a real life example showing how sensory neurons work with the motor neurons