QUESTION 1

The speed of sound in air is 340m/s.What is the wavelength of a soundwave that has a frequency of 520 Hz?

QUESTION 2

What is the speed of sound in air that has a temperature of 290.6K?

QUESTION 3

A steel cable on a bridge has a linear mass density of15kg/m.If the cable has been pulled taunt with a tension of 7876N,what is the speed of a wave on it?

QUESTION 4

A wire passes 39C of charge every 1.70 s. How many amperes of current is passing through the wire during this time?

QUESTION 5

In the US,the conventional voltage seen in a recepticle(wall outlet) is 120 V. How many amperes is required to run a stereo that has a resistance of 977?

QUESTION 6

A television set draws 19 A in a conventional 120 V home. How much power does it use?

QUESTION 7

If a microwave is determined to use 927 W of power on a 120 V circuit, how many amperes does it need to run?

QUESTION 8

An electrical space heater has a resistance of 68 and draws 8.41 A of current. How much power does it use?

QUESTION 9

An eagle flying at 28 m/s emits a cry whose frequency is 370 Hz. A blackbird is moving in the same direction as the eagle at 11.28 m/s. (Assume the speed of sound is 343 m/s). What frequency does the blackbird hear (in Hz) as the eagle approaches the blackbird?

QUESTION 10

For the scenario in Question 9 with the speed of eagle 10.08 m/s, what frequency does the blackbird hear (in Hz) after the eagle passes the blackbird?