Physics, 23.07.2019 23:00 avasteinhebel10

Alarge convex lens stands on the floor. the lens is 180 cm tall, so the principal axis is 90 cm above the floor. a student holds a flashlight 120 cm off the ground, shining straight ahead (parallel to the floor) and passing through the lens. the light is bent and intersects the principal axis 60 cm behind the lens. then the student moves the flashlight 30 cm higher (now 150 cm off the ground), also shining straight ahead through the lens. how far away from the lens will the light intersect the principal axis now? a. 30 cm b. 60 cm c. 75 cm d. 90 cm

Answers: 1

Show answers

Another question on Physics

Physics, 21.06.2019 15:50

Which instrument is used to measure air temperature

Answers: 2

Answer

Physics, 21.06.2019 22:30

An engineer designs a roller coaster so that a car travels horizontally for 162 ft, then climbs 127 ft at an angle of 31.0° above the horizontal. it then moves 127 ft at an angle of 46.0° below the horizontal. if we take the initial horizontal motion of the car to be along the +x-axis, what is the car's displacement? (give the magnitude of your answer, in ft, to at least four significant figures and give the direction of your answer in degrees counterclockwise from the +x-axis.)

Answers: 1

Answer

Physics, 22.06.2019 05:10

What do elements in a family tend to share. a.) similar periods b.) similar groups c.) similar atomic symbols d.) similar chemical properties and characteristics

Answers: 2

Answer

Physics, 22.06.2019 17:50

Which of the following best describes internal energy? a. the difference between the kinetic and potential energies of the particles in a system b. the sum of the kinetic and potential energies of the particles in a system c. the sum of the kinetic and thermal energies of the particles in a system d. the difference between the kinetic and thermal energies of the particles in a system

Answers: 2

Answer

You know the right answer?

Alarge convex lens stands on the floor. the lens is 180 cm tall, so the principal axis is 90 cm abov...

Questions

Physics, 20.11.2019 01:31

You have decided to study the effect of loud noise on plant growth. you put one plant in a quiet room and the other plant in your schools band hall. p...