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
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A _____ is a commonly accepted set of scientific ideas and assumptions
A) deferent B) paradigm C) theory D) hypothesis
The electron spin quantum number can take on what values?
What will be an ideal response?
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.
Doubling the wavelength of a photon would ______________ its energy
a. halve b. double c. quadruple d. not change