A 66-kg woman runs up a flight of stairs having a rise of 4.0 m in a time of 4.2 s. What average power did she supply?
a. 380 W
c. 620 W
b. 560 W
d. 670 W
C
Physics & Space Science
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A _____ is a commonly accepted set of scientific ideas and assumptions
A) deferent B) paradigm C) theory D) hypothesis
Physics & Space Science
The electron spin quantum number can take on what values?
What will be an ideal response?
Physics & Space Science
An electron and a proton are each released from rest in the same uniform electric field. The electron moves a distance delectron and the proton moves a distance dproton as each particle's kinetic energy increases by 1.6 eV. How do delectron and dproton compare?
a. delectron < dproton b. delectron > dproton c. delectron = dproton d. The answer depends on the direction of the electric field.
Physics & Space Science
Doubling the wavelength of a photon would ______________ its energy
a. halve b. double c. quadruple d. not change
Physics & Space Science