Physics Homework Aid
Physics holds significant importance among the natural sciences, elucidating life's wonders and ranking among the most challenging subjects to master.
QuestionAI is a rich and user-friendly physics problem solver for novice physicists, enabling exploration of atomic properties and interactions, alongside molecular trajectories under various forces. Furthermore, you can delve into the mysteries concealed amidst galaxies with fellow physics enthusiasts. Boldly pose your conjectures and queries to the AI, and authoritative answers will readily emerge.
- Mr Muyise wishes to use a block and tackle system to move 5bags of cement each of m ass 50kg up a tall building he is constructing. The pulley system he hopes to use consists of three pulleys in the fixed block and 2 pulleys in the movable block. His friend Mabeere advised that if the pulley system is 85% efficient, then no energy will be lost (wasted by t he machine) but he didn't understand I what his friend meant by that statement. (a)As physics student, what did Mabeere mean by that statement? (b) Explain to Mr.Muyise how energy is lost or wasted by the machine. (c) Find out how much energy Mr.Muyise must apply so as to move the cement up the b uilding
- A student carries out two ruler-drop reaction tests. During one, there is silence and during the other, the radio is playing in the background. Test number & Silence measurement (mathrm(cm)) & Radio measurement (mathrm(cm)) 1 & 0.15 & 0.31 2 & 0.21 & 0.29 3 & 0.18 & 0.28 4 & 0.27 & 0.25 5 & 0.19 & 0.34 Describe the effect of noise on the student's reaction times.
- Which of these materials are transparent? Select all correct answers Air Coffee Paper Glass Water
- When you drive backwards, the back wheels control the direction of the vehicle. True False
- The accurate scale drawing shows the positions of port P and a lighthouse L. Lindsey sails her boat from port P on a bearing of 050^circ She sails for 1(1)/(2) hours at an average speed of 5km/h to a port Q. a) Indicate the position of port Q on the drawing (use the x^+ tool). b) Find the distance, in km, of port Q from lighthouse L. c) Find the bearing of port Q from lighthouse L. (2) Total marks: 5