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.
- 22. When a sound can be heard it is called? (A) Decibel (B) Ultrasound (C) Audible (D) Rarefaction 23. What are the audible range of frequencies for the human ear? (A) Below 20 Hz (B) Between 20 and 20000 Hz (C) Above 20 Hz (D) All frequencies 24. What terms describes sounds with frequencies that are lower than 20Hz (A) Infrasonic (B) Subsonic (C) Supersonic (D) Ultrasonic
- A plane's average speed between two cities is 245m/s If the trip takes 2.25 hours, how far does the plane fly?
- Look at the dogram showing the forces on a car If force A is 150N and force B is 150N.what is the size of the resultant vertical force? Inter your answer as a number N
- Which of the following is the minimum core temperature for a cooking meat / poultry? 65^circ mathrm(C) for 2 minutes 70^circ mathrm(C) for 2 minutes 80^circ mathrm(C) for 2 minutes 90^circ mathrm(C) for 2 minutes
- What is the momentum of a 7:4-kg'pug .. a) At rest? b) Walking at 0.2m/s c) Running at 4.4m/s ?