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.
- A man throws a tennis ball into the air so that, at the instant when the ball leaves his hand, the ball is 2 m above the ground and is moving vertically upwards with speed 9ms^-1 The motion of the ball is modelled as that of a particle moving freely under gravity and the acceleration due to gravity is modelled as being of constant magnitude 10ms^-2 The ball hits the ground T seconds after leaving the man's hand. Using the model , find the value of T. (4 marks) T= seconds
- Fossil Fuels:Question 6 When a fossil fuel is combusted for electricity.what is the immediate next step? Select one: Carbon dioxide is absorbed by the fossil fuel A generator converts kinetic energy to electrical energy Water is heated and steam is produced A turbine is turned
- A particle, of mass 400 grams, is initially at rest at the point O. The particle starts to move in a straight line so that its velocity, vms^-1 at time I seconds is given by v=6t^2-12t^3 for tgt 0 (a) Find an expression in terms of I for the force acting on the particle. (b) Find the time when the particle next passes through O. (3) (5)
- 5) If the current in an electrical circuit is constant , what will happen to the voltage if the resistance is increased? The voltage will decrease The voltage will increase The voltage will stay the same
- A student investigated the specific heat capacity of metals. (a) Describe an experiment the student could do to measure the specific he capacity of a metal.