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.
- 21 The time period , T seconds, of a simple pendulum of length 7cm is given by the formula T=2pi sqrt ((l)/(g)) Katie uses a simple pendulum in an experiment to find an estimate for the value of g. Here are her results. l=52.0 correct to 3 significant figures. T=1.45 correct to 3 significant figures. Work out the upper bound and the lower bound for the value of g. Use pi =3.142 You must show all your working.
- ()4. (a) In an iron rod the particles vibrate. If one end of an iron rod is heated.the vibrating particles transfer energy to neighbouring particles which are not vibrating so violently. What is this process called? conduction (b) An electric immersion heater is put at the bottom of a large tank of water. The water next to the heater becomes warm. (i) What will happen to the warmed water next to the heater? Give a reason for your answer. __ 2 marks (ii) Why can heat not be transferred in this way in an iron rod? __ 1 mark (c) In a liquid, some of the particles have enough kinetic energy to escape from the surface. This process happens even when the liquid is well below its boiling point. What is this process called? __ 1 mark (ii) How will this affect the temperature of the liquid left in the container? __ 1 mark Maximum 6 marks (a)Why did a spot of lig Light can be split u many colours. Light travels in str lines (b) Gabby moved c The ray of light Continue the f Use a ruler.
- 21 Jackson is trying to find the density, in g/cm^3 of a block of wood. The block of wood is in the shape of a cuboid. He measures the length as 132 cm, correct to the nearest mm the width as 16.0 cm, correct to the nearest mm the height as 21,7 cm, correct to the nearest mm He measures the mass as 1970 g, correct to the nearest 5 g By considering bounds work out the density of the wood. Give your answer to a suitable degree of accuracy. You must show all your working and give a reason for your final answer.
- Unit 1 Test 2024-25 Which of the following scientist(s)discovered the proton? Dalton Rutherford Thomson Bohr
- Who performed the gold foil experiment? John Dalton Joseph Thomson Emest Rutherford Schroedinger