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A loudspeaker is placed between two observers who are 115 m apart, along the line connecting them. If one observer records a sound level of 51.7 dB and the other records a sound level of 79.3 dB, how far is the speaker from each observer?
An unknown number of moles of an ideal monoatomic gas expand reversibly from Vi = 1.30 m3 to Vf = 2.20 m3, Calculate the work done by the gas
Two positively charged particles q1 = 2C and q2 = 2C are separated by distance d = 1.0 m. Calculate the total electric potential energy of 3 particles
A 0.470-kg glider, attached to the end of an ideal spring with force constant k = 500 N/m, undergoes SHM with an amplitude 0.040 m. Compute the maximum speed of the glider. Compute the speed of the glider when it is at x = -0.015 m.
If it takes 3.60 x10-13 s for a nitrogen molecule to hit the wall and rebound with the same speed but moving in an opposite direction (assumed to be the negative direction), what is the average acceleration of the molecule for the period of this t..
Between 1911 and 1990, the top of the leaning bell tower at Pisa, Italy, moved toward the south at an average rate of 1.2 mm/y. The tower is 55 m tall. In radians per second, what is the average angular speed of the tower's top about its base?
A man driving a car toward a large vertical wall sounds his horn. The car is traveling at 92 km/h. What is the frequency of the car horn
A mass is attached to a spring. It oscillates at a frequency of 4/? Hz when displaced a distance of 7.00 cm from equilibrium
When a hammer strikes a nail, it is compressed along its length. Suppose that a steel nail 6.00 cm long, What is the impulse imparted to the hammer
The catapults on the USS George H.W. Bush can launch aircraft from rest to a speed of 150 mph over a distance of 270 feet. Find the acceleration of the aircraft
A 1.0 kohm resistor is connected in series with a 10 mH inductor, a 30 V battery, and an open switch. at time t=0, the switch is suddenly closed. What are the voltage drops Vr and Vl 20.00 us after the switch is closed.
A cannonball is shot (from ground level) with an initial horizontal velocity of 36 m/s and an initial vertical velocity of 21 m/s. What is the initial speed of the cannonball
The boiling point of liquid nitrogen is 77.3 K at atmospheric pressure. What is this temperature on the Celsius scale
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