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The entrance to a large lecture room consists of two side-by-side doors, one hinged on the right and the other hinged on the left. Each door is 0.700 meter wide. Sound of frequency 607 Hertz is coming through from through the entrance from within the room. The speed of sound is 343 m/s. Find the diffraction angle θ of the sound after it passes through the doorway when
(a) one door is open and
(b) both doors are open?
a a ball and bat approach one another each with the same speed of 2.70 ms collide. find the speed of the ball after the
A point source emits sound waves with a power output of 120 W. At what distance will the decibel reading be 140 dB, which is noise level of a loud indoor rock concert
Two balls with masses of 2.0 kg and 6.0 kg travel toward each other at speeds of 12 m/s and 4.0 m/s, respectively. how much kinetic energy is lost in the collision
When yellow light from a sodium lamp shines on a certain photocell, What potential would be needed to stop the electrons if light with 4000 A is used
Two Jupiter-size planets are released from rest 5.00×1010m apart. What are their speeds as they crash together
A converging lens of focal length 7.550cm is 20.5cm to the left of a diverging lens of focal length -6.50cm, find the location of the coins final image
Solar energy originates in nuclear reaction, where mass energy changes the most in kinetic energy of photon. calculate how much mass, the Sun loses in second
For the third circuit, consisting of a single battery and two light bulbs in parallel, what is the total resistance of the circuit if each light bulb has a resistance of 7.7 ohms? What is the current through each bulb
A VW Beetle goes from 0 to 102 mi/h with an acceleration of +6.59 m/s2. A top-fuel dragster can go from 0 to 102 mi/h in 1.52 s. What is the acceleration (in m/s2) of the dragster
A river flows from south to north at 5.30 km/h. On this river, a boat is heading east to west perpendicular to the current at 7.90 km/h, determine how fast is this boat traveling
determine the minimum magnetic field.
A 200g ball is tied to a 1.0 meter long string and released from rest @ 60 degree angle. it swings down and at the very bottom collides with a 1.0kg block. the block is resting on a frictionless surface and is connected to a 20cm long spring with ..
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