Find the magnitude of the static frictional force when θ < θc.

1. fs = µs m g sin θ
2. fs =1/2µs m g cos θ
3. fs =1/2µs m g sin θ
4. fs =1/2m g cos θ
5. fs = m g sin θ
6. fs = 0
7. fs = m g
8. fs = m g cos θ
9. fs =1/2m g sin θ

Which best describes how fluids change as they travel through different portions of the convection currents? they change to solids at the outer portion of the convection currents. they change to solids at the inner portion of the convection currents. they become more dense at the outer portion of the convection currents. they become more dense at the inner portion of the convection currents

You have a pick-up truck that weighed 4,000 pounds when it was new. you are modifying it to increase its ground clearance. when you are finished

Which branches of natural science include the study of an organism that lived 10 million years ago