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An organ pipe is closed at one end and open at the other end. It is 0.8 m long. When a standing wave of the longest possible wavelength is formed, what is the frequency of the standing wave in Hz if the speed of sound is 340 m/s? (Hint: First find the longest possible wave length and then calculate its frequency).
A string of a music instrument has a length of 0.64 m. Its mass is 8.6 g. Find the speed of a wave on this string in m/s if the tension on the string is 75.6 N? (Hint: You need to calculate the linear mass density – mass/length in m/kg).
The guitarist from a famous rock band is tuning two guitars. One of them has been tuned and one of the strings is tuned to produce sound wave of frequency 352 Hz. A string on the other guitar produces 7 beats per second when the two strings are played together. What is the highest possible frequency that the second string produces in Hz
A 6-V battery in a simple circuit produces a current of 1.5 A through the circuit. How much power is being delivered by the battery in W?
30 C of charge passes in a 5 second period through a resistive material of cross- sectional area of a circle with radius 1 x 10-3 m. How much of the current goes through the cross-section in A?
Three 20-Ω resistors are connected in series to a 6-V battery that has only negligible internal resistance. What is the voltage difference across each resistor in V? (Hint: First calculate the current going through the three resistors and then find the voltage difference.)
Assume T=kL^x g^y. Find the value of x and y for which the above equation is dimensionally correct
. A motor with coil of area 3cm^2 rotes with uniform angular velocity w in the magnetic field changing at 200 T per minute. A) make a graphical representation of induced EMF; b) find such w.
Is it possible for an object to receive a large impulse from a small force than a large force?
A crane moved a 160kg hot tub from the ground to the rooftop of a hotel 54 m above the ground. If the crane used 180, 000 joules of energy, how efficient was the crane?
