The change in size of an object due to thermal expansion depends upon
a. what the object is made of
b. the object's original size
c. how much the temperature changes
d. A and C
e. all of the above
E
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If the temperature of the sun is 5800 K, then what is wavelength where the blackbody radiation is a maximum?
A. 402.0 nm B. 465.0 nm C. 500.0 nm D. 575.0 nm E. 625.0 nm
If a person in Alaska were locked out of his house on a day when the temperature outside was ?40°C, his thick clothing would mostly reduce the loss of thermal energy by
a. conduction. b. convection. c. radiation. d. all of the above. e. convection and radiation.
The angle that a swinging simple pendulum makes with the vertical obeys the equation ?(t) = (0.150 rad) cos[(2.85 rad/s)t + 1.66]. (a) What is the length of the pendulum?
A) 0.15 m B) 0.83 m C) 1.21 m D) 2.02 m E) It cannot be determined from the information given. (b) What is the mass of the swinging bob at the end of the pendulum? A) 2.85 kg B) 1.66 kg C) 0.454 kg D) 0.150 kg E) It cannot be determined from the information given.
The process of boiling water tends to
A) warm the water. B) cool the water. C) both of these D) none of the above