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Two loudspeakers in a plane, 6.0 apart, are playing the same frequency. If you stand 14.0 in front of the plane of the speakers, centered between them, you hear a sound of maximum intensity. As you walk parallel to the plane of the speakers, staying 14.0 in front of them, you first hear a minimum of sound intensity when you are directly in front of one of the speakers. What is the frequency of the sound? Assume a sound speed of 340.
A particular engine has a power output of 4.00 kW and an efficiency of 25.0%. Assume the engine expels 7000 J of energy in each cycle. Find the time required to complete each cycle
While hauling a log in the back of a flatbed truck, you are pulled over by the state police, The log has a mass of m = 844 kg; the truck has a mass of M = 9750 kg. According to the truck manufacturer, Calculate the minimum coefficient of static frict..
A particle of mass m1 = 3.57kg is traveling in the x-direction at a speed of v1 = 23.6m/s and collides with another particle of mass m2 = 2.85kg that is initially at rest. find the magnitude of the final velocity of the second particle
A 67.5 kg person sits on a 3.77 kg chair. Calculate the pressure exerted on the floor by each leg of the chair, assuming the weight is evenly distributed
Two forces act on a 3.4 kg box. One of the forces is known to be F= 5.5 N. The acceleration is measured to be A= (-1.9i - 2.7j ) m/s2. Find the second force as a magnitude and direction
Riders on the "Great American Revolution" loop-the-loop roller coaster wear seatbelts as the roller coaster negotiates its 6.5m -radius loop with a speed of 9.8m/s.
Determine the normal mode frequency of the Lagrangian, given by L=(1/2)(xdot2 +ydot2)-(1/2)(ω21x2+ω22y2)+ αxy ,where α is constant xdot =ydot means derivative with respect time.
A flat sheet of ice (n = 1.309) has a thickness of 1.6cm. It is on top of a flat sheet of crystalline quartz (n = 1.544) that has a thickness of 0.86cm. Light strikes the ice perpendicularly and travels through it and then through the quartz. In t..
The captain of an infamous ship spots an iceberg ahead. Currently the ship is travelling east at a speed of 37.0 knots. How many seconds will it take before the iceberg is directly ahead of the ship
Heat flows into an ideal gas at a constant volume. The pressure increases from 1.5 atm to 5.5 atm. What is the total heat flow of the process
A car is travelling at 15m/s while the driver spots a large pothole in the road a distance 45 m ahead. She immediately applies her brakes. Her acceleration is -9.6 m/s2. What is the stopping distance.
A 12-kg block initially slides at 18 m/s on a flat rough surface and eventually stops. what is the entropy change of the system
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