A sound wave coming from a tuba has a wavelength of 0.674 m and travels to your ears at a speed of 345 m/s. What is the frequency of the sound you hear?

a. 512 Hz
c. 230 Hz
b. 1/517 Hz
d. 1/230 Hz


A

Physics & Space Science

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Two dogs, Rover and Fido, run on a level frictionless surface. Rover runs eastward with a momentum of 24 kg . m/s, and Fido runs northward with momentum 10 kg . m/s. They make a sudden perfectly inelastic collision

What is the magnitude of their combined momentum after the collision? A) 14 kg . m/s B) 34 kg . m/s C) 26 kg . m/s D) It cannot be determined without knowing the masses and velocities of the dogs.

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A series LRC ac circuit has a resistance of 4.0 k?, a capacitance of 33.0 ?F, and an inductance of 23.0 H. If the frequency of the alternating current is 2.0/? kHz, what is the phase angle between the voltage and the current?

A) -1.6 rad B) 23 rad C) 3.1 rad D) 1.5 rad

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A 1200-kg car is being raised with a constant acceleration of 2.53 m/s2 by a crane, using a 20-m long steel cable that is 1.5 cm in diameter. Young's modulus for steel is 2.0 × 1011 N/m2

What is the change in length of the cable caused by lifting the car? A) 8.4 mm B) 8.4 cm C) 4.9 mm D) 4.9 cm E) 4.9 m

Physics & Space Science

Briefly explain how mass transferred from one star to another in a binary system flows into a rapidly rotating whirlpool called an accretion disk

What will be an ideal response?

Physics & Space Science