- When an object gains a positive charge is has __ gained electrons Ogamed protons Olost protons Olost electrons
- a. Explain the following terms: i. Spherical aberration Triple click this text to highlight it and replace it with your answer. DO NOT BACKSPACE. ii. Principle of reversibility Triple click this text to highlight it and replace it with your answer. DO NOT BACKSPACE. iii. Concave reflecting surface Triple click this text to highlight it and replace it with your answer.DO NOT BACKSPACE. iv. Convex reflecting surface Triple click this text to highlight it and replace it with your answer.DO NOT BACKSPACE.
- 9. (4) Benzene gas has an optical density of 1.001762. A distant planet has an atmosphere made of benzene. How much time would it take for a ray of light to travel a distance of 7890km in its almosphere?
- c) Parmi les enonces sulvants, lesquels sont vas Entourer toutes ies tasse 1 transfere de ta chaleur a far ambiant 2) Lair ambian translere de la chaieur a Teau contenue dans is tasse I 3) Leau contenue dans la tasse 2 translere de la chaleur a fair ambiant 4) Lair ambiant transfore de la chaleu a Teau contenue dars is tasse 2 5) Leau contenue dans to tasse 3 transfore de is chaleur a lai ambusnt (6) Lar ambiant transfere de la chaleur aleas contenue dans la tasse 3 un rendement de 10% doll-d consommer pour square
- Potential Energy (PE) Proble me: 6. Arock of mass 2.2 kg is held 8 meters above the ground Calculate the gravitational potential energy. 7.A 15 kg object is placed on a shelf 3.5 motors high. Find its potential energy. 8.A 3 kg book is placed on a table that is 7 meters above the floor What is the potential energy of the book? 9.A 55 kg crate is lifted 5 meters in the air. Calculate the potential energy of the crate. 10. A 0.9 kg bird is perched on a tree 6 meters above the ground. What is the gravitational potential energy of the bird?
