Refrigerators have become much more efficient in the last decade
What will be an ideal response?
This is the case, as one can see by comparing the numbers in Table 8.7.
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Wien's Law: The surface temperature of the star is 6000 K. At what wavelength is its light output a maximum? The constant in Wien's law is 0.00290 m ? K.
A. 850 nm B. 907 nm C. 311 nm D. 483 nm E. 502 nm
Discuss whether it is possible to have a displacement whose magnitude is greater than the distance traveled
What will be an ideal response?
In the apparatus shown in figure Q4.1a, the value displayed by the ammeter is proportional to 
A. The rate at which electrons emerge from the cathode. B. The average kinetic energy of the ejected electrons. C. The maximum kinetic energy of the ejected electrons. D. Both A and C.
Uniform Circular Motion: The Moon is 3.84 × 108 m from Earth and takes 27.3 days to complete each orbit. What are the magnitude and direction of the acceleration of the Moon, assuming a circular orbit?
What will be an ideal response?