The surfaces between a 7 kg block, the 23 kg wedge and between the 23 kg wedge and the horizontal plane are smooth (without friction). the acceleration of gravity is 9.8 m/s 2 . a block is released on the inclined plane (top side of the wedge). 7 kg 29◦ 23 kg 9 f .8 m /s^2. what is the force f which must be exerted on the 23 kg block in order that the 7 kg block does not move up or down the plane? answer in units of n.

First, launch the video below. you will be asked to use your knowledge of physics to predict the outcome of an experiment. then, close the video window and answer the question at right. you can watch the video again at any point. part a as in the video, we apply a charge +q to the half-shell that carries the electroscope. this time, we also apply a charge –q to the other half-shell. when we bring the two halves together, we observe that the electroscope discharges, just as in the video. what does the electroscope needle do when you separate the two half-shells again? view available hint(s) as in the video, we apply a charge + to the half-shell that carries the electroscope. this time, we also apply a charge – to the other half-shell. when we bring the two halves together, we observe that the electroscope discharges, just as in the video. what does the electroscope needle do when you separate the two half-shells again? it deflects more than it did at the end of the video. it deflects the same amount as at end of the video. it does not deflect at all. it deflects less than it did at the end of the video. submit

Science and technology are interdependent. advances in one lead to advances in the other. give an example of this phenomenon.

Describe the function of the endomembrane system? what organelles are involved?