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A string is stretched between fixed supports separated by 73.0 cm. It is observed to have resonant frequencies of 390 and 487.5 Hz, and no other resonant frequencies between these two.
(a) What is the lowest resonant frequency for this string?
____ Hz
(b) What is the wave speed for this string?
____ m/s
A current of 0.307 A through your chest can send your heart into fibrillation, ruining the normal rhythm of heartbeat and disrupting the flow of blood (and thus oxygen) to your brain. If that current persists for 2.90 min, how many conduction elec..
The electric field between two square metal plates is 130 N/C. The plates are 1.0 m on a side and are separated by 3.0 cm, Calculate the charge on each plate
A ray of light is incident on glass-air interface at the critical angle of 41 deg., what is the refracted angle, What is the strength of a lens which forms an image 24 cm from the lens when the object is 40 cm away
Compute the voltage drop along a 23 length of household no. 14 copper wire (used in 15- circuits). The wire has diameter 1.628 and carries a 12 current.
An earth satellite is observed to have a height of pergee of 210 Kilometers and a height of apogee of 1,200 kilometers. Find the period of the orbit
A metal rod with a diameter of 2.30 cm and length of 1.10 m has one end immersed in ice at 32oF and the other end in water at 212oF. what is the thermal conductivity of this metal
35 kg girl is bouncing on a trampoline. Throughout a certain interval after leaving the surface of the trampoline, her kinetic energy decreases to 170 J from 470 J. How high does she rise during this interval? Avoid air resistance.
A man does 4,735 J of work in the process of pushing his 2.70 103 kg truck from rest to a speed of v, over a distance of 25.0 m. determine the horizontal force exerted on the truck
What is the magnitude and direction of the magnetic field
A spacecraft approaching the earth launches an exploration vehicle. What is the speed of the exploration vehicle relative to the spaceship
Suppose a car is traveling at 14 m/s, and the driver sees a traffic light turn red. After 0.50 s has elapsed (the reaction time) the driver applies the brakes and the car decelerates at 8.0 m/s2.
By how much horizontal force would you need to apply to a 3.0 N plastic calculator to start it moving from rest? How much horizontal force would you need to keep it moving?
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