To push a 5-kg crate up a frictionless incline angled at 40° to the horizontal, a worker exerts a force of 150 N parallel to the incline. The crate moves a distance of 10 m, (use g = 10 m/s2). 1. What work is done on the crate by the worker? (In Joules)
2. What work is done on the crate by gravity? (Joules)
3. What is the work done on the crate due to the normal force of the inclined plane surface? (Joules)
4. What is the net work done on the crate? (Joules)
5. If the crate begins at rest, what is the final speed of the crate as it is moved from the bottom to the top of the inclined plane? (m/s)

Does any one know what real love is and would anyone be willing to share it with me?

Which lists the main components of darwin’s theory of evolution? a. random mutations drive evolution; the evolution of a population happens slowly; organisms have common ancestors; organisms do not change. b. natural selection drives evolution; the evolution of a population happens slowly; organisms have common ancestors; organisms change over time. c. natural selection drives evolution; the evolution of a population happens rapidly; organisms have common ancestors; organisms change over time. d. random mutations drive evolution; the evolution of a population happens rapidly; organisms have common ancestors; organisms do not change.

Convection currents are caused by differences in what two things?