1. How far in front of a lens of 45 cm focal length must an object be placed if the image is to be
three times as big as the object?
(2)
2. Explain how a converging lens can be used to project an image over a large distance such as
in a cinema. Explain why getting the image in focus can be difficult.
(3)
Answers: 1
Physics, 21.06.2019 22:30
A2 kg ball travellng to the right with a speed of 4 m/s collidees with a 5 kg ball traveling to the left with a speed of 3 m/s. take right to be the positive direction. what is the total momentum of the two balls before they collide? what is the total momentum of the two balls after they collide?
Answers: 1
Physics, 21.06.2019 23:00
How many dots must be added to the symbol to properly represent a standard nitrogen ion? a) 1 b) 3 c) 5 d) 8
Answers: 1
Physics, 22.06.2019 05:00
Aperson standing in a canoe exerts a force of 700 n to throw an anchor over the side. find the acceleration of the canoe if the total mass of the canoe and the person is 100 kg?
Answers: 1
Physics, 22.06.2019 05:30
The a992 steel rod bc has a diameter of 50 mm and is used as a strut to support the beam. determine the maximum intensity w of the uniform distributed load that can be applied to the beam without risk of causing the strut to buckle. take f.s. = 2 against bucklin
Answers: 3
1. How far in front of a lens of 45 cm focal length must an object be placed if the image is to be...
History, 03.04.2020 02:04
History, 03.04.2020 02:04
Mathematics, 03.04.2020 02:04
History, 03.04.2020 02:04
History, 03.04.2020 02:04
World Languages, 03.04.2020 02:04
English, 03.04.2020 02:04
History, 03.04.2020 02:04
Mathematics, 03.04.2020 02:04
Mathematics, 03.04.2020 02:04