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An antenna in the form of a circular disk of diameter 18.0 m receives (at normal incidence) a radio signal from a distant source. The radio signal is a continuous sinusoidal wave with an electric field amplitude Emax = 0.350 V/m. Assume the antenna absorbs 80.0% of the radiation that falls on the dish.
(a) What is the amplitude of the magnetic field of the wave?
(b) What is the intensity of the radiation received by the antenna?
(c) What is the average power received by the antenna?
(d) What is the radiation pressure on the antenna?
A mass of 2.5 kilogram is attached to a spring that has a spring constant of 65 N/m. The mass is oscillating on a frictionless, horizontal surface. Evaluate what is the maximum speed of the mass
Draw a suitable diagram, defining your variables and coordinate system. Express the velocity vector of the stone at t=0 in i(hat), j(hat) format. How far horizontally from the launch point is the buliding located.
What is the distance between two converging lenses, each of ofcal length f and used in combination to become a telescope
Scientists in a laboratory produce a sound wave in a simulated environment (air) with a velocity of 487 m/s.What is the temperature (in Celsius) of the environm
Some gas contained within a syringe was heated from a temp of 25C to 95C, while the volume was allowed to expand from 50cm^3 to 55cm^3. If the initial pressure was 95000Pa, what is the new pressure?
A figure skater begins spinning counter clockwise at an angular speed of 4.7 π rad/s. during a 4.9 s interval, she slowly pulsher arms inward and finally spins at 8.2 π rad/s. what is heraverage angular acceleration during this time interval?
A bone is found in your backyard. You decide to date it and discover is has an C-14 activity of 0.097 Bq per gram of carbon. Find the age of the bone
The pitch of the sound from a race car engine drops the musical interval of a third when it passes the spectators. How fast is the race car moving
a golfer hits a shot to a green that is elevated 3.20 m above the point where the ball is struck. the ball leaves the
An 8.0g ice cube at -10 degrees celcius is pu into a thermos flask containing 100cm cube of water at 20 degrees celcius. By how much has the entropy changed when equilibrium is reached? The specific heat of ice is 22220 J/kg K.
Assume the mass of the car is 65.0 kg and it starts at 30.0 m above the ground Use the graph above to find the kinetic energy, potential energy, and velocity for points C, D, E, F, and G to complete the table.
A man throws a 0.200kg rock off the top of a 50.0m cliff at an angle of 40.0 degrees above the horizontal. What is the kinetic energy of the rock
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