Asolid sphere of radius r is placed at a height of 30 cm on a 15° slope. it is released and rolls, without slipping, to the bottom. from what height should a circular hoop of radius r be released on the same slope in order to equal the sphere’s speed at the bottom?
b) can a circular hoop of different diameter be released froma height of 30 cm and match the sphere's speed at the bottom? if, so what is the diameter? if not, why not?

What does the term discrediting mean?

Three point charges, two positive and one negative, each having a magnitude of 20 μc are placed at the vertices of an equilateral triangle (30 cm on a side). what is the magnitude of the electrostatic force on the negative charge

Date chapter motion and speed review part a. vocabulary review directions: write the terms that match each description below in thes complete the sentence in number 13. ich each description below in the spaces provided. the boxed letters will 1. equal forces acting in opposite directions (2 words) 2. occurs when an object's velocity decreases (2 words) 3. sum of all forces acting on an object (2 words) 4. total distance divided by total time (2 words) 5. name for the slant of a line on a graph 6. distance divided by time 7. a push or a pull exerted on a body or object 8. distance and direction of an object from its starting point 9. tendency to resist change in motion 10. measure of how far an object has moved 11. speed and direction of motion 12. rate of change of position at a specific point in time (2 words) 13. the rate of change in velocity is called motion and spe