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According to Equation 20.7, an ac voltage V is given as a function of time t by V = V0sin(2?f t), where V0 is the peak voltage and f is the frequency (in hertz). For a frequency of 50.0 Hz, what is the smallest value of the time at which the voltage equals two-thirds of the peak value?
A 7.80-nF capacitor is charged up to 15.0V , then disconnected from the power supply and connected in series through a coil. Calculate the maximum charge on the capacitor
A note played on a piano is 4719 Hz. If the speed of sound is 347 m/s, what is the wavelength of the note?
Two long, straight parallel wires are separated by a distance of 21.1 cm. What is the magnitude of the resulting magnetic field at apoint that is 12.1 cm from each wire
In Chapter 10 in the textbook, we saw that the Achilles tendon will stretch and then rebound, storing and returning energy during a step. What is the spring constant of her Achilles tendon
Jupiter emits radio waves and also visible light (reflected Sunlight). Which of the following statements about the light we detect from Jupiter is true.
An electron is accelerated to speed of 1.5*10^8 m/s. at that speed, compare the relativistic results to classical results for , find the electron rest energy according to the relativistic laws
A compact disk spins with angular velocity 40.8rad/s. The player is turned off, and 2.10s later the CD has stopped. Find its average angular acceleration
A 9.27-m-long glider with a mass of 545.48 kg (including the passengers) is gliding horizontally through the air at 29.02 m/s, What is the glider's horizontal velocity
A small block of mass m1 = 0.5kg slides to the left, with a velocity of v1 = -8.40 m/s, towards a curved wedge of mass m2 = 3 kg which sits on an icy, frictionless lake surface.
A diving board oscillates with simple harmonic motion of frequency 3.36 cycles per second, What is the maximum amplitude with which the end of the board can vibrate in order that the pebble placed there not lose contact with the board during oscillat..
Suppose your favorite FM radio station broadcasts at a frequency of 99.9 MHz. What is the wavelenght of this signal
q1. a ball is thrown directly up from the ground with speed vsub0. at the same time a second ball is dropped from rest
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