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A rigid container holds 0.20 of hydrogen gas. How much heat is needed to change the temperature of the gas from 50 K to 100 K? How much heat is needed to change the temperature of the gas from 250 K to 300K ? How much heat is needed to change the temperature of the gas from 2250 K to 2300 K?
At high noon, the Sun delivers 1.10-kW to each square meter of a blacktop road. If the hot asphalt loses energy only by radiation, what is its equilibrium temperature?
Water at a pressure of 4 atm, at street level, flows into a building at 0.5 m/s through a 6 cm diameter pipe. Calculate the water pressure and velocity on the top floor
A cat walks along a plank (length = 4.00 m and mass = 7.00 kg). What is the mass of the cat
End A of the bar AB rests on a frictionless horizontal surface, and end B is hinged. A horizontal force vec F of magnitude 107 {rm N} is exerted on end A. You can ignore the weight of the bar. What is the vertical component of the force exerted by..
A cylindrical copper cable carries a current of 1380 A. There is a potential difference of 1.6 10-2 V between two points on the cable that are 0.21 m apart. What is the radius of the cable
If F(r) is the force on an object as a function of of radius r, show that the "tidal" force on an object of lenght delta r is delta F= (dF/dr)delta r
In November 2003, the now-most-distant-known object in the solar system was discovered by observation with a telescope on Mt. Palomar. What is Sedna's minimum speed
Oppositely charged parallel plates are separated by 5.26 mm. A potential difference of 600 V exists between the plates. (a) What is the magnitude of the electric field strength between the plates?
An electric fan is running on HIGH. After fan has been running for 1.0 minutes, the LOW button is pushed. What was the initial angular speed of the fan in rev/sec
find the horizontal distance the ball would travel if the same spring were aimed 32.0 deg from the horizontal.
A laser that produces a spot of light that is 1.20 mm in diameter is shone perpendicularly on the center of a thin, what is the power of the laser
You illuminate a slit of width 0.0583 mm with light of wavelength 711 nm, What is the width, in centimeters, of the pattern's central maximum
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