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1. A 473 Hz sound wave travels through a substance. The wavelength of the sound wave is measured to be 275 centimeters. What is the speed of sound in the substance in m/s?
2. Scientists in a laboratory produce a sound wave in a simulated environment (air) with a velocity of 419 m/s. What is the temperature (in Celsius) of the environment?
3. A test tone used on a radio has a frequency of 902 Hz. What is the wavelength of this sound in air at average room temperature (68 F). Record your answer to three decimal places.
How many moons does Saturn have? What is the name of Saturn's largest moon? What is special about this moon? What are the names of Saturn's 6 medium sized moons? What is special about Enceladus and Iapetus? What are Shepherd moons and what purpose..
A 4000 kg truck is parked on a 7.0 degree slope. How big is the friction force on the truck
A spring, of negligible mass and which obeys Hooke's Law, supports a mass M on an incline which has negligible friction. The figure below shows the system with mass M in its equilibrium position. The spring is attached to a fixed support at P. The..
How long after the arrow was shot must the apple be dropped, in order for the arrow to pierce the apple as the arrow hits the tree.
The potential difference across a typical cell membrane is about 76 mV. How much work is done on a singly ionized potassium ion moving through the membrane
Submarine propeller spins at 200 revolutions per minute. Angular velocity in radians per second?
Calculate the resultant velocity of an airplane that normallyflies at 200km/h if it encounters a 50-km/h tailwind. If itencounters a 50-km/h head wind
Weightless bar is 18 meters. Upward forces of 165N at 3 meters from left and one of 310N at 14 meters from left. Downward force of 475N is applied. What should be Point of Application
A 6600 kilogram satellite is in a circular earth orbit that has a radius of 2.5 x 107 meter. Compute what work must the net external force do
Through 5 successive 0.97 min intervals, a runner moves at the following constant speeds: 0.396 km/min, 0.222 km/min, 0.160 km/min, 0.160 km/min, and 0.320 km/min. calculate the total distance traveled and the average speed.
As a baseball is being thrown, it goes from 0.0 to 40.0 m/s in 0.17 s. What is the acceleration of the baseball
A man with a mass of 67 kilogram stands at the left end of a uniform beam that has a mass of 98 kilogram and a length of 2.9 meter. Find the new x position of the man at the left end of the beam
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