Physics, 02.01.2020 22:31 ShortCakes02
Sometimes a person cannot clearly see objects close up or far away. to correct this type of vision, bifocals are often used. the top half of the lens is used to view distant objects and the bottom half of the lens is used to view objects close to the eye. a person can clearly see objects only if they are located between 34 cm and 180 cm away from his eyes. bifocal lenses are used to correct his vision. what power lens (in diopters) should be used in the top half of the lens to allow him to clearly see distant objects
Answers: 1
Physics, 21.06.2019 19:40
An ideal spring has a spring constant (force constant) of 2500 n/m, is stretched 4.0 cm, how much elastic potential energy does it possess? (a) 3j (b) 0.00j (c) 1j (d) 2j (e) 4j
Answers: 1
Physics, 21.06.2019 23:30
Awoman stands a distance d from a loud motor that emits sound uniformly in all directions. the sound intensity at her position is an uncomfortable 2.0×10-3 w/m2. at a distance 2.6 times as far from the motor, what are (a) the sound intensity and (b) the sound intensity level relative to the threshold of hearing?
Answers: 1
Physics, 22.06.2019 04:00
Ametal ball with a mass of 0.028 kg is dropped from rest at a height of 1.0 meters above the ground. assuming the energy in the ball is conserved, how much kinetic energy will the ball have when it is 0.5 meters above the ground?
Answers: 1
Physics, 22.06.2019 07:00
Which statement is best supported by the information in the chart? wave y is moving the fastest. wave x is moving the fastest. all of the waves are moving at the same speed. all of the waves have the same value of wavelengths per second.
Answers: 3
Sometimes a person cannot clearly see objects close up or far away. to correct this type of vision,...
English, 21.06.2019 21:40
Mathematics, 21.06.2019 21:40
English, 21.06.2019 21:40
Mathematics, 21.06.2019 21:50
Mathematics, 21.06.2019 21:50
English, 21.06.2019 21:50
Mathematics, 21.06.2019 21:50