Aplank of length 2l leans against a wall. it starts to slip downward without friction. show that the top of the plank loses contact with the wall when it is at two-thirds of its initial height.


B.releasing the string

i think its d if wrong im sorry

The answer is trial 3.

kepler used the data from tycho blahe (his mentor) to construct the laws of planetary motion.

Do you know the answer?

Other questions on the subject: Physics

Physics, 21.06.2019, cookies1164
A) Em = 4.41 JB) L = 0.33mExplanation:A) The total mechanical energy of the block is the elastic potential energy due to the compressed spring. The gravitational energy is zero. Th...Read More
3 more answers
Physics, 22.06.2019, andrewsaul04
What are your choices. i believe it might be mitochondria but i will know for sure when i see the choices. let me know okay i'm happy to answer...Read More
2 more answers
2500 JExplanation:The first law of thermodyniamics states that:where is the change in internal energyQ is the heat absorbed by the systemW is the work done by the systemin this pro...Read More
3 more answers
Physics, 22.06.2019, zhjzjzzj6325
1.48 m/sExplanation:If it takes a time of 2.20 s for the boat to travel from its highest point to its lowest, then the period for the boat to travel from its highest point back to...Read More
3 more answers