How much energy is dissipated as heat during a two-minute time interval by a 1.5-k? resistor which has a constant 20-V potential difference across its leads?
a. 58 J
b. 46 J
c. 32 J
d. 72 J
e. 16 J
c
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A particle physicist observes cosmic rays creating a new particle high in the atmosphere, and the speed of this particle is measured at 99.7% the speed of light
It is unstable, and is observed to decay in an average 37.0 ?s. If this particle were at rest in the laboratory, what would be its average lifetime? A) 2.9 µs B) 18 µs C) 5.3 µs D) 12 µs E) 4.3 µs
Ionization from the ____________________ star in the Orion nebula makes it ____________________ brightly
Fill in the blank(s) with correct word
If you wanted to know how much the temperature of a particular piece of material would rise when a known amount of heat was added to it, which of the following would be most helpful to know?
A) Initial temperature B) Specific heat C) Density D) Coefficient of linear expansion E) Thermal conductivity
Which of the following elements in your body is formed in stars?
A. calcium B. carbon C. oxygen D. iron E. All of these choices are correct.