A blue star has a higher surface temperature than a red star
Indicate whether the statement is true or false
TRUE
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Compared to noise, musical sounds have
A) periodic tones. B) musical notes. C) both of these D) neither of these
Two point charges of + 20.0 ?C and - 8.00 ?C are separated by a distance of 20.0 cm. What is the intensity of electric field E midway between these two charges?
A) 25.2 × 106 N/C directed towards the negative charge B) 25.2 × 106 N/C directed towards the positive charge C) 25.2 × 105 N/C directed towards the negative charge D) 25.2 × 105 N/C directed towards the positive charge E) 25.2 × 104 N/C directed towards the negative charge
For a body emitting blackbody radiation, the total power emitted is proportional to the 4th power of the body's absolute temperature: (T in kelvins) and the wavelength of the emitted EM radiation that has the highest intensity is inversely proportional to the body's absolute temperature according to: ( in meters, T in kelvins) Assume an object is emitting blackbody radiation. A body in a room at
300 K is heated to 3,000 K. The wavelength of the most intense EM radiation emitted by the body at 3,000 K is the wavelength of the most intense EM radiation at 300 K. a. 0.0001 times b. 0.1 times c. the same as d. 10 times e. 10,000 times
Propene and cyclopropane are
a. the same compound. b. isomers. c. neither isomers nor the same compound.