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Calculate the blackbody temperatures (K) from the peak wavelengths given in a) through b), and the peakwavelengths (m) from the temperature given inc)
a) 180 nm (surface of hot star)b) 2.4 μm (surface of cold star)c) 60 K (interstellar cloud)
The emissivity of the human skin is 97.0 percent. Use 35.0 °C for the skin temperature and approximate the human body by a rectangular block with a height of 1.81 m, Calculate the power emitted by the human body
Collectible coins are sometimes plated with gold to enhance their beauty and value. Consider a commemorative quarter-dollar advertised for sale at $4.98. Find the cost of the gold added to the coin
Expand Lagrangian to second order about equilibrium coordinates, r_0, phi = wt and find the condition for stability against small oscillations.
An ideal air conditioner operating on a Carnot cycle absorbs heat Q2 from a house at temperature T2 and discharges Q1 to the outside at temperature T1, consuming electrical energy E.
An astronaut on a strange planet finds that she can jump a maximum horizontal distance of 19.0 m if her initial speed is 2.80 m/s. What is the free-fall acceleration on the planet
Suppose you decide to take a trip in your car today. You start out and drive 32 miles in 20 minutes, What is your average speed for the entire trip including when you were parked
A particle of mass m is in an infinite square well of width L. determine the allowed energies for the system
a 1000 N crate is being pushed across a level floor at a constant speed Vi=1.75 m/sec by a force of F=300N at an angle of theta=20 Degrees below horizontal. what is the final velocity of the crate
a car moving at 80 km/hr is brought to a stop in 5 seconds. How far did the car travel while stopping
Red light (n = 1.520) and violet light (n = 1.538) traveling in air are incident on a slab of crown glass. What is the angle of incidence of the violet light
At an outdoor market, a bunch of bananas attached to the bottom of a vertical spring of force constant 16.0 N/m is set into oscillatory motion with an amplitude of 20.0 cm
A roller coaster at an amusement park has a dip that bottoms out in a vertical circle of radius r. A passenger feels the seat of the car pushing upward on her with a force equal to twice her weight as she goes through the dip.
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