Large radio telescopes, like the one in Arecibo, Puerto Rico, can detect extremely weak signals. Suppose one radio telescope is sensitive enough to detect a signal which lays down only 1.4 pW of power on an area of 5.1 × 1015 m2. (a) What would be the total power that would be received by the antenna, assuming that its diameter is 310 m? (b) What would be the power of a source at 28000 ly distance from Earth that could provide such a signal? A light-year is the distance light travels in one year. Both units in W

Q: Assume the helium-neon lasers commonly used in student physics laboratories have power outputs of…

A:

Q: The electric field from a radio station some distance from the transmitter is given by (10-4 N/C)…

A: Given, Electric field from a radio station, 10-4 NC cos 106t d = 86 cm

Q: Radiology. An x-ray tube has an output intensity of 2.6 mR/mAs at 100-cm source-to-image receptor…

A:

Q: (known values: e = 1.602 E-19 C,  m= 9.11E-31 kg) e/m(theoretical)= 1.759*1011 Use the data…

A: Given:-  e = 1.602 x  10-19 C,  m= 9.11 x 10-31 kg) e/m(theoretical)= 1.759 x 1011 Find:- Find a way…

Q: Large radio telescopes, like the one in Arecibo, Puerto Rico, can detect extremely weak signals.…

A: The power of the signal The area where the power is detected The power density The diameter of the…

Q: Calculate the power density (Pa) produced at a point (P) of 10Km distant from 80m long-wire antenna…

A: A power density of an antenna is expressed as the input power provided to the antenna divided by the…

Q: The AM radio station 1090 broadcasts 32.0 kW of power uniformly in all directions. What is the…

A: Given Data: Power (P) = 32.0 kW = 32.0×103 W.Distance (r) = 28 km = 28×103 m. To Determine: The…

Q: An outdoor WiFi unit for a picnic area has a 100-mW output and a range of about 30.9 m. What output…

A:

Q: |V(VOLT) 1.2 1.4 1.6 1.8 2 2.3 2.6 |1.6 1.8 2 I×0.01 (Amp) f = 50 Hz | X. = ohm | C = µF.

A: Capacitive reactance is the resistance offered by the capacitor represented by Xc Xc=12π f…

Q: A 40.0 W incandescent light bulb transforms 19.0% of its energy into visible light; the rest goes…

A: Electromagnetic waves contain energy. This energy is generated due to its electric and magnetic…

Q: Consider a bright star in our night sky. Assume its distance from Earth is 86.3 light-years (ly) and…

A:

Q: Assume the helium-neon lasers commonly used in student physics laboratories have power outputs of…

A:

Q: Suppose you have a 1000W microwave that you need to run for 5min to heat up your dinner. How much…

A:

Q: (a) How much energy does a microwave transfer to a bowl of soup if the  microwave has an efficiency…

A:

Q: At what distance from a 125 W electromagnetic-wave point source does Emax = 15.1 V/m?

A: We know ,the maximum electric field is given by