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.
- In a bar magnet the magnetic force seems to come from each end. The ends of a bar magnet are called the __ . What one word completes the sentence?
- An advantage of electromagnets over bar magnets is that you can easily vary the __ of the magnetic field. What word completes this sentence?
- In a bar magnet we say that like poles do what?
- The dingram shows a block of metal on horizontal ground. pressure=(force)/(area) The base of the block of metal is a rectangle 20cm by xcm. The block exerts a force of 1500 newtons on the ground. The pressure on the ground is 3newtons/cm^2 Work out the value of x.
- 15 The process of nuclear fission takes place in nuclear power stations. The process of nuclear fusion takes place in the Sun. Draw one line from each process to its fuel. [2 Process Fuel Hydrogen Nuclear fission Iron Nuclear fusion Lead Uranium