
what is the frequency in hertz (Hz) of the current furnished by an alternator having 8...
What is the wavelength in nanometers of light having a frequency of 3.1 x 10^13 Hz? What is the frequency in hertz of light having a wavelength of 539 nanometers?
What is the wavelength (in nanometers) of light having a frequency of 5.5 × 10^13 Hz? (b) What is the frequency (in hertz) of light having a wavelength of 253 nm? (a) Wavelength of light (b) Frequency of light (Enter your answer in scientific notation.)
2. What is the frequency in Hertz (Hz) of an X-ray from a copper (Cu) X-ray tube (wavelength of 1.54 angstroms, Å) used in diffraction experiments?
a) What is the wavelength (in nanometers) of light having a frequency of 2.2 × 10^13 Hz? (b) What is the frequency (in hertz) of light having a wavelength of 291 nm? (a) Wavelength of light × 10 nm (Enter your answer in scientific notation.) (b) Frequency of light × 10 Hz
1. A six pole, 240V, 50 Hz three phase squirrel-cage induction motor has a no-load speed of 103 rad/s and a speed regulation of 5% at rated load. Find the amount of slip (in rpm) at full load for this motor. 2.. A 2 HP, 240 VAC, 60 Hz, capacitor-start motor is 75% efficient and draws 10 A at full load. What is this motor's power factor at rated load? 3. A wound rotor, 3 phase induction motor in Mr....
A 400 v, 50 Hz, three phase alternator, rated at 75 kVA, is star connected and driven at 1000 r/min. The windings of the alternator have a resistance, per phase, of 0.03 Ω and synchronous reactance, at 50 Hz per phase, of j0.325 Ω. The stator of the alternator has 108 slots, with 8 conductors, per slots, in a double layer. The maximum pole flux is 8.772 x 10-3 Wb. To improve the wave form only 80% of the pole...
1) What is the frequency of the following current in radians/sec and hertz? i(t) = 36 cos(700πt + 45°) mA 2) What is the phase angle of the following voltage in radians/sec and hertz? Does this phase shift represent a lead or lag. Why? v(t) = 50 cos(3000t - 40°) V 3) What is the frequency of the following current in radians/sec and hertz? What is the phase angle? Is it lead or lag? i(t) = 0.2 cos(500πt + 45°)...
19. The metric system unit of frequency is the Hertz, abbreviated Hz, which is that same as 1.00 wave cycle per second. True False 20. When light goes through a prism or diffraction grating and you do not see all of the colors of the rainbow it is called a(n): A. subvenience spectrum B. uniform density spectrum C. continuous spectrum D. discrete spectrum E. diverted spectrum
Two train whistles, A and B , each have a
frequency of 396 Hz . A is stationary and B is
moving toward the right (away from A ) at a speed of 35.0
m/s . A listener is between the two whistles and is moving toward
the right with a speed of 15.0 m/s . (See (Figure 1) .)
Part A
What is the frequency from A as heard by the
listener?
Express your answer in hertz
Part B...
1. The frequency of a damped harmonic oscillator is 100 Hz, and the ratio of the amplitude of two successive maxima is one half. a. What is the natural (undamped) frequency of this oscillator, in Hertz? b. If the oscillator is launched at time t0 from the origin with speed 2 m/s, what is its speed at time t 0.0140 sec?