Physics, 18.01.2020 01:31 heids17043
Show that the intensity i is the product of the energy density u (energy per unit volume) and the speed of propagation v of a wave disturbance; that is, show that i = uv. (b) calculate the energy density in a sound wave 4.82 km from a 47.5 kw siren, assuming the waves to be spherical, the propagation isotropic with no atmospheric absorbtion, and the speed of sound to be 343 m/s.
Answers: 3
Physics, 22.06.2019 09:00
Yvette hangs a 2.4kg bird feeder in the middle of a rope tied between two trees. the feeder creates a tension of 480 n in each side of the the rope.
Answers: 1
Physics, 22.06.2019 13:10
A0.750 kg aluminum pan is removed from the stove and plunged into a sink filled with 10.0 kg of water at 293 k. the water temperature quickly rises to 297 k. what was the initial temperature of the aluminum pan? the specific heat of aluminum is ca = 900 j/(kgk) and water is cw = 4190 j/(kgk)
Answers: 3
Physics, 22.06.2019 18:00
The photo shows sugar dissolved into a solution with excess sugar at the bottom of the jar this type of solution is classified as a. unsaturated b. compound c. saturated d. plasma
Answers: 1
Physics, 22.06.2019 19:40
Two charged particles, q1 and q2, are located on the x-axis, with q1 at the origin and q2 initially at x1 = 12.2 mm. in this configuration, q1 exerts a repulsive force of 2.62 µn on q2. particle q2 is then moved to x2 = 18.0 mm. what is the force (magnitude and direction) that q2 exerts on q1 at this new location? (give the magnitude in µn.)
Answers: 1
Show that the intensity i is the product of the energy density u (energy per unit volume) and the sp...
Biology, 03.12.2020 01:00
Social Studies, 03.12.2020 01:00
Mathematics, 03.12.2020 01:00
Mathematics, 03.12.2020 01:00
Health, 03.12.2020 01:00
Computers and Technology, 03.12.2020 01:00
Mathematics, 03.12.2020 01:00
Mathematics, 03.12.2020 01:00
Mathematics, 03.12.2020 01:00
History, 03.12.2020 01:00
History, 03.12.2020 01:00
Mathematics, 03.12.2020 01:00