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An infinite string (-∞ < x ≤ 0) of linear density ρL and under tension T is attached at x = 0 to a second infinite string (0 < x < ∞) under the same tension but of linear density 1.5ρL. If a wave of angular frequency ω and amplitude A is traveling in the +x direction on the first string, find the amplitude of the wave traveling on the second string.
A magnetic field is applied perpendicular to the plane of the disk. Assume that the field is 0.900 T, Find the emf generated between the brushes
A standing observer perceives a train whistle to have a frequency of 300 Hz. compute the frequency of the sound waves emitted from the train
A ball is launched directly upward from ground level with aninitial speed of 19 m/s. (Air resistanceis negligible.) How long is the ball in the air? What is the greatest height reached by the ball?
a roller coaster traverses a vertical circular track.a what speed must the car have so that it will just make it over
long-distance telephone communication utilizes transmission of electromagnetic signals in the microwave part of the
Sarah and her bicycle have a total mass of 40 kg. Her speed at the top of a 10 m high and 100 m long hill is 5 m/s. at what speed will she be going when she reaches the bottom
an ideal gas in a balloon is kept in thermal equilibrium with its constant temperature surroundings. how much work is
A battery with an emf of 12.0 Volt shows a terminal voltage of 11.82 Volt when operating in a circuit with three 9.3 W light bulbs connected in parallel with it. Find the battery internal resistance in units of ohms
Name two basic differences between normal and active galaxies. How do astronomers account for the differences in the spectra observed from active galaxies?
A 45 kg figure skater is spinning on the toes of her skates at 1.0 rev/s. Her arms are outstretched as far as they will go. In this orientation, the skater can be modelled as a cylindrical torso (40 kg, 20 cm average diameter, 160 cm tall) plus two r..
A small coil has a cross section of 5.5 cm2 and consists of 8 turns of wire. If the loop carries a current of 180 mA, what is the torque required to hold the loop
In designing a machine part, you need a spring that is 8.75cm long when no forces act on it and that will store 24.0J of energy when it is compressed by 1.40cm from its equilibrium position. What should be the force constant of this spring
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