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The speed of sound at 0oC is 331 m/s. At another temperature, the speed of sound is measured to be 343 m/s. Evaluate what is this temperature?
A 13.9-kg object hangs in equilibrium at the end of a rope (taken as massless) while a wind pushes the object with a 66.5-N horizontal force. determine the rope\'s angle from the vertical
You hold a spherical salad bowl 90 cm in front of your face with the bottom of the bowl facing you. The salad bowl is made of polished metal with a 35 cm radius of curvature. What is the image (your face's image) distance along the central axis fr..
An archer's bow is drawn at its midpoint until the tension in the string is 1.07 times the force exerted by the archer. What is the angle between the two halves of the string
You want to support a sheet of fireproof paper horizontally, using only a vertical upward beam of light spread uniformly over the sheet. If the paper is black and hence absorbs all the light that hits it, find what must be the intensity of the light..
Find out the magnitude of the velocity of the heavier fragment relative to the ground just after explosion.
calculate the expectation value of the x position of a particle known to be in a state n 3 of a 1d box of length l.
An electron moving parallel to the x axis has an initial speed of 3.70 x 106 m/s at the origin. Its speed is reduced to 1.40 x 105 m/s at the point x = 2.00 cm. Which point does the proton have a higher potential energy
An isolated copper sphere of radius 4.85cm, at first uncharged, is illuminated by ultraviolet light of wavelength 244nm. The work function for copper is 4.70 eV. What charge does the photoelectric effect induce on sphere.
A toy train rolls around a horizontal 1.5-m-diameter track. The coefficient of rolling friction is 0.13. What is the magnitude of the trains angular acceleration
Consider two parallel-plate capacitors, C1 and C2, that are connected in parallel. The capacitors are identical except that C2 has a dielectric inserted between its plates. What is the final voltage across the two capacitors
A 8.50cm diameter wire coil is initially oriented so that its plane is perpendicular to a magnetic field of 0.690T pointing up. During the course of 0.180s, the field is changed to one of 0.350T pointing down. What is the average induced emf in the c..
A guitar string is vibrating in its fundamental mode, with nodes at each end. The length of the segment of the string that is free to vibrate is 0.384m. What is the amplitude of this standing wave
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