Three sources of sound are distributed along a line, as shown in the figure. v is the speed of sound. Source A is at rest, and it emits sound waves with a frequency of 480 Hz. Source B is traveling at v/5 to the right, and it emits sound waves with a frequency of 960 Hz. Sourc...
A light-rail commuter train blows its 200 Hz horn as it approaches a crossing. The speed of sound is 336 m/s. a)An observer waiting at the crossing receives a frequency of 205 Hz. What is the speed of the train?
maths simultaneous equations
3x + 5y = 1 4x + 7y = 2
Determine the theoretical and percent yield of hydrogen gas if 80.5 g water undergoes electrolysis to produce hydrogen and oxygen and 2.81 g hydrogen is collected. theoretical yield
Value of $100.00 earning 8% compounding interest rate annually at the end of 10 years.
what percent of 30 is 40?
Marks: 1 A car merges onto the highway from rest in 10 seconds. The final speed of the car is 60 mph. Estimate the acceleration of the car.
An trapdoor is 0.91 m square, has a mass of 11 kg, and is hinged along one side with a latch on the opposite side. If the center of mass is located 0.1 m toward the hinged side from the center, what are the magnitudes of the forces on the latch and the hinge from the door?
What is the pH of a solution that is 0.0100 M in HCN and 0.0200 M in NaCN?
If Ethan ate 4 times as many cookies as Daniel who at 2 times as many as Courtney how many cookies did Ethan eat if Courtney ate 2.