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A 4-m-long string, fixed at both ends, has a mass of 8 g. If you want to set up a standing wave in this string having a frequency of 280 Hz and three antinodes, what tension should you put the strin
The molecular weight of bleach (Sodium Hypochlorite NaClO) is 74.35 gms and the room temperature is 300K. Ignore convective currents.
What resistance would have to be connected in series with a 3 V lamp in a 28 V circuit when the operating current of the lamp is 0.5 A? What is the operating resistance of the lamp?
Why does a computer monitor flicker when i video tape it with a movie camera? Is it the same reason why when i wave my pen in front of a monitor fast it gives a wierd effect like there are bunch of
A car has a gas tank that holds 10.1 U.S. gal. One U.S. gal. equals 3.785 liters. What is the volume of the gas tank in cubic cubits?
An 8-Kg mass is observed traveling with a speed .08c. a) What is its classical momentum? What is its relativistic momentum? What is the difference between these two values?
A vector force with components (1,2,5) acts at the point (3,2,1) a) Find the vector torque about the origin due to this force
A string is 33.5 cm long and has a mass per unit length of 5.70 10-4 kg/m. What tension must be applied to the string so that it vibrates at the fundamental frequency of 708 Hz?
A string with a mass of 27 g and a length of 2 m is stretched under a tension of 68 N. How much power must be supplied to the string to generate a traveling wave that has a frequency of 48 Hz and an
An earthquake generates three kinds of waves: surface waves (L waves), which are the slowest and weakest; shear (S) waves, which are transverse waves and carry most of the energy; and pressure (P) w
What is the least count of a measurement instrument, and how is it related to the number of significant figures of the readings of a instruments?
A protozoan swims with a speed of 3.92 mm/s. How much time (in s) would it take this protozoan to swim directly across a petri dish having a diameter of 7.75 cm?
If receiver has an available power gain of 110 dB and a noise bandwidth of 10 MHz, the available output noise power of receiver is??
Analog data having highest harmonic at 30 kHz generated by a sensor has been digitized using 6 level PCM. What will be the rate of digital signal generated?
Calculate the range of collector and emitter currents that can result. What is the maximum power dissipated in the transistor? (Note: Perhaps you can see why this is a bad way to establish the opera
Consider an npn transistor whose base-emitter drop is 0.76 V at a collector current of 10 mA. What current will it conduct at vBE = 0.70 V? What is its base-emitter voltage for ic=10microampere
A person traels by car from one city to another with different constant speeds between pairs of cities. She drives for 30.0 min at 80.0km/h,12.0 min at 100km/h ad 45.0 min at 40.0km/h and spends 15.
You are provided with an ideal op amp and three 10-kQ resistors. Using series and parallel resistor combinations, how many different inverting-amplifier circuit topologies are possible? What is the
If the 10-kQ resistors are said to be "5% resistors," having values somewhere in the range (1 ± 0.05) times the nominal value, what range of outputs would you expect to actually measure for a
What issues presented themselves as obstacles, and what were opportunities that advanced nanotechnology in manufacturing?
A particle is thrown upwards from the ground. It experiences constant air resistance which produces a retardation of 2 m/s^2. Find the ratio of time of ascent to time of descent.
H(z) is a discrete rational transfer function. To ensure that both H(z) and its inverse are stable its:
Monochromatic light of wavelength, lambda, is traveling in air. The light then strikes a thin film having an index of refraction, n1 that is coating a material having an index of refraction n2. I
How long does it take light to travel through a 6.73 mm thick piece of window glass? Through what thickness of water could light travel in the same amount of time.