The resistance of an object is defined as

A) (length)/(resistivity)(cross-sectional area).
B) (current)/(voltage).
C) (voltage)/(current).
D) (length)(resistivity)(cross-sectional area).
E) (voltage)(current).


C

Physics & Space Science

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A monster turnip (assumed spherical) weighing in at 0.45 kg is dropped into a cauldron of water boiling at atmospheric pressure. If the initial temperature of the turnip is 17°C, how long does it take to reach 92°C at the center? Assume that


GIVEN

FIND
Time needed to reach 92°C at the center
ASSUMPTIONS

SKETCH

Physics & Space Science

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

Physics & Space Science

__________is one of the Jovian planets

A) Saturn B) Mars C) Pluto D) Mercury

Physics & Space Science

An ancient rock is found to contain 40Ar gas, indicating that 77% of the 40K in the rock has decayed since the rock solidified. Any argon would have boiled out of liquid rock. The half-life of 40K is 1.25 billion years

How long ago did the rock solidify? A) 2.6 billion years B) 0.50 billion years C) 1.8 billion years D) 0.30 billion years

Physics & Space Science