Physics, 28.11.2020 06:20 amandasantiago2001
Dolphins rely on echolocation to be able to survive in the ocean. In a 20 °C ocean, a dolphin produces an ultrasonic sound with a frequency of 125 kHz. What is the wavelength of this sound, in meters?While remaining stationary, the dolphin emits a sound pulse and receives an echo after 0.220 s. How far away, in meters, is the reflecting object from the dolphin?
Answers: 1
Physics, 21.06.2019 19:30
Agymnast dismounts off the uneven bars in a tuck position with a radius of 0.3m (assume she is a solid sphere) and an angular velocity of 2rev/s. during the dismount she stretches out into the straight position, with a length of 1.5m, (assume she is a uniform rod through the center) for her landing. the gymnast has a mass of 50kg. what is her angular velocity in the straight position?
Answers: 2
Physics, 22.06.2019 12:20
Aball with a mass of 275 g is dropped from rest, hits the floor and rebounds upward. if the ball hits the floor with a speed of 2.40 m/s and rebounds with a speed of 1.70 m/s, determine the following. (a) magnitude of the change in the ball's momentum (let up be in the positive direction.)
Answers: 1
Dolphins rely on echolocation to be able to survive in the ocean. In a 20 °C ocean, a dolphin produc...
Mathematics, 11.01.2021 19:10
Mathematics, 11.01.2021 19:10
Mathematics, 11.01.2021 19:10
Mathematics, 11.01.2021 19:10
Mathematics, 11.01.2021 19:10
Arts, 11.01.2021 19:10
History, 11.01.2021 19:10
Mathematics, 11.01.2021 19:10
Mathematics, 11.01.2021 19:10
Biology, 11.01.2021 19:10
English, 11.01.2021 19:10
Mathematics, 11.01.2021 19:10
Mathematics, 11.01.2021 19:10