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A receiving antenna in a satellite is attached to a matched receiver that has a center frequency of 160 GHz and a bandwidth of 1 GHz.
a. Calculate the "big bang" noise power that will be received.
b. Compare the noise power calculated in Part (a) with the additional noise power received if the moon is in the antenna beam with a filling factor of 0.3
A railroad car of mass 2.1 104 kg moving at 3.50 m/s collides and couples with two coupled railroad cars, What is the speed of the three coupled cars after the collision
A 3.0 kilogram block slides with a speed of 1.1 m/s on a frictionless, horizontal surface until it encounters a spring. Compute what initial speed should the block have if it is to compress the spring by 1.3 centimeter
Two neutrons are in an infinite square well with L=2.0 fm. What is the minimum total energy that the system can have? (Neutrons, like electrons, have antisymmetric wave functions. Ignore spin.)
A ball is released from the top of a cliff; it hits the ground 1.1 seconds later. how many meters is the cliff above the ground below
a 62.7 kg astronaut is on a space walk when the tether line to the shuttle breaks. the astronaut is able to throw a 11
In a simple model of the hydrogen atom, the electron moves in a circular orbit of radius 0.053 nm around a stationary proton. How many revolutions per second does the electron make
You are designing a roller coaster for a new amusement park on the Moon. You envision a loop with a radius of 35 meters in your track. What speed at the top of the loop would a car need to have
A Carnot engine is operated between a hot and a cold reservoir. The temperature dissimilarity between the two reservoirs is 284°C. If the efficiency of this ideal engine is 24.0%, discover the temperature of the cold reservoir in °C.
A crankshaft with a diameter of 3.0 cm, rotating at 2900rpm comes to a halt in 1.20s. How many revolutions does the crankshaft make as it stops
The average density of the planet Uranus is 1263 kg/m3. Calculate the average radius of Uranus
A 10 kilogram block of metal measuring 12cm by 10 cm by 10 cm is suspended from a scale and immersed in water. What is the reading of the spring scale
A satellite orbits Venus at a height above the surface that is four times the radius of the planet. How long does it take the satellite to complete one circular orbit
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