Asound wave that has a wavelength of 2 m in room-temperature air has a frequency of about
a. 1...
Physics, 27.10.2019 00:43 ayoismeisalex
Asound wave that has a wavelength of 2 m in room-temperature air has a frequency of about
a. 170 hz.
b. 1360 hz.
c. 2040 hz.
d. none of the above
Answers: 3
Physics, 21.06.2019 19:40
You carry a 7.0-kg bag of groceries 1.2 m above the ground at constant speed across a 2.7m room. how much work do you do on the bag in the process? (a) 157j (b) 0.00j (c) 185j (d) 82j
Answers: 2
Physics, 22.06.2019 10:10
In a simplified model of the human eye, the aqueous and vitreous humors and the lens all have a refractive index of 1.40, and all the refraction occurs at the cornea, whose vertex is 2.60 cm from the retina. what should be the radius of curvature of the cornea such that the image of an object 40.0 cm from the cornea’s vertex is focused on the retina?
Answers: 1
Physics, 22.06.2019 20:30
Which statement best describes the direction of the buoyant force on any object? a. opposite the force of gravity b. in the same direction as the weight c. in the direction of motion of the object d. opposite the direction of motion of the object
Answers: 1
Physics, 23.06.2019 02:00
Two technicians are discussing a starter that clicks repeatedly when the key is turned to the crank position. technician a says the solenoid hold-in winding is open. technician b says the solenoid pull-in winding is open. who is correct?
Answers: 2
Physics, 02.03.2021 17:30
Social Studies, 02.03.2021 17:30
Chemistry, 02.03.2021 17:30
Geography, 02.03.2021 17:30
Health, 02.03.2021 17:30
Social Studies, 02.03.2021 17:30
Mathematics, 02.03.2021 17:30
Mathematics, 02.03.2021 17:30
Mathematics, 02.03.2021 17:30
Mathematics, 02.03.2021 17:30
Mathematics, 02.03.2021 17:30
Mathematics, 02.03.2021 17:30
Computers and Technology, 02.03.2021 17:30