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An aluminum rod is clamped one quarter of the way along its length and set into longitudinal vibration by a variable-frequency driving source. The lowest frequency that produces resonance is 4300 Hz. The speed of sound in an aluminum rod is 5100 m/s. Find the length of the rod.
q1 = -2 ?C is at (-5cm, 3cm) and q2 = +8?C is at (0,0). Find the x component of the electric force exerted on q2 due to q1
There are two identical, positively charged conducting spheres fixed in space. The spheres are 45.0 cm apart (center to center) and repel each other with an electrostatic force of F1 = 0.0720 N. find the initial charge on each sphere
Heather and Matthew walk eastward with the speed of 0.99 m/s east. If it takes them 37 minutes to walk to the store, how far have they walked? Reply in units of km.
A cylinder in a car engine takes Vi = 4.50 multiply.gif 10-2 m3 of air into the chamber at 30° C and at atmospheric pressure. What is the new temperature of the air
An artillery shell is fired with a minimal velocity of 470m/s at 50o above the horizontal. To clear an avalanche, it explodes on a mountain side 38 s after firing.
Three deer, A, B, and C, are grazing in a field. Deer B located 64 m from dear A at an angle of 53° north of west, What is the distance between deer A and C
A wave has angular frequency 140 rad/s and wavelength 1.60 m. Calculate the angular wave number
Two ball shells are nested together ( centers exerting). The smaller balls diameter is R1 and bigger ones R2, Derive capacitance of the system from its definition C=Q/I?VI
A block is being pulled by a rope with a force of 24 N. The rope has an angle of theta=20 degrees from the horizontal. The block moves a distance of 11 m. Elucidate what is the work done?
What's the advantage of launching space vehicles from high flying aircraft in place of from the ground.
Two of the same capacitors C are wired in series. When they are connected to a +30V battery, How much energy each capacitor stores
A car is traveling 17 m/s when the driver sees a child standing on the road. He takes 0.8 s to react, then steps on the brakes and slows at 7.5 m/s2. How far does the car go before it stops.
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