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A string with a mass of 31 g and a length of 2 m is stretched under a tension of 67 N. How much power must be supplied to the string to generate a traveling wave that has a frequency of 51 Hz and an amplitude of 4 cm.
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Question: It is proposed that future space stations create an artificial gravity by rotating. Suppose a space station is constructed as a 1000-m-diameter cylinder that rotates about its axis. The inside surface is the de ...
Question: In one of the classic nuclear physics experiments at the beginning of the 20th century, an alpha particle was accelerated towards a gold nucleus and its path was substantially deflected by the Coulomb interacti ...
Question: A stationary boat in the ocean is experiencing waves from a storm. The waves move at 55 km/h and have a wavelength of 160 m. The boat is at a crest of a wave. How much time elapses until the boat is first at th ...
Question: In short-track speed skating, the track has straight sections and semicircles 16 m in diameter. Assume that a 64kg \;kg skater goes around the turn at a constant 11m/s Part A: What is the horizontal force on th ...
Question: A slingshot will shoot a 10-g pebble 22.0 m straight up. Part A: How much potential energy is stored in the slingshot's rubber band? Express your answer using two significant figures. Part B: With the same pote ...
Question: A proton is released from rest at the positive plate of a parallel-plate capacitor. It crosses the capacitor and reaches the negative plate with a speed of 50,000 m/s. What will be the final speed of an electro ...
Question: A standard 100 W (120 V) lightbulb contains a 9.00cm -long tungsten filament. The high-temperature resistivity of tungsten is 9.0 x 10^- 7 Ωm. What is the diameter of the filament? Express your answer with the ...
Question: At t=0 a grinding wheel has an angular velocity of 30.0rad/s . It has a constant angular acceleration of 27.0rad/s^2 until a circuit breaker trips at time t = 1.60s . From then on, it turns through an angle 433 ...
Question: Tim and Rick both can run at speed v_r and walk at speed v_w, with v_r > v_w They set off together on a journey of distance D. Rick walks half of the distance and runs the other half. Tim walks half of the time ...
Question: Positive point charges q = 7.00uC and q'= 4.00uC are moving relative to an observer at point P, as shown in the figure (Figure 1). The distance d is 0.130m , v = 4.60 x 10^6 m/s , and v'= 9.20 x 10^6 m/s Part A ...
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