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.
- LDRs are s ometimes used in automatic lights that turn on when it gets dark outside. When it gets dark outside, the resistance of the LDR will be __ What word completes the sentence? low zero high
- 29 Here are two cubes, A and B. Cube A has a mass of 81 g. Cube B has a mass of 128g. Work out the density of cube A: the density of cube B Give your answer in the form a:b where a and b are integers.
- True or false? Magnetic field lines always point from south poles to north poles.
- square A vertical rope PQ has its end Q attached to the top of a small lift cage. The lift cage has mass 40 kg and carries a block of mass 10kg, as shown in Figure 1. The lift cage is raised vertically by moving the end P of the rope vertically upwards with constant acceleration 0.2ms^-2 The rope is modelled as being light and inextensible and air resistance is ignored. Using the model, (a) find the tension in the rope PQ (b) find the magnitude of the force exerted on the block by the lift cage.
- New Question [TRUE or FALSE?]: A material which conducts electricity MUST be a metal. [FALSE]: Some non -metals such as graphite conduct electricity [FALSE]: No metals conduct electricity [TRUE]: Only metals conduct electricity [FALSE]: ALL metals and non-metals conduct electricity