Which of these is an inherent, unchanging property of any given solid or liquid material?
a. mass
b. weight
c. volume
d. shape
e. density
e
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The metric system is a decimal system
a. True b. False Indicate whether the statement is true or false
A metal having a work function of 2.5 eV is illuminated with white light that has a continuous wavelength band from 400 nm to 700 nm
For which one of the following ranges of the wavelength band in this white light are photoelectrons NOT produced? (h = 6.626 × 10-34 J ? s, c = 3.00 × 108 m/s, 1 eV = 1.60 × 10-19 J) A) 500 nm to 700 nm B) 400 nm to 560 nm C) 500 nm to 560 nm D) 400 nm to 500 nm E) 560 nm to 700 nm
A 0.50-kg box is attached to an ideal spring of spring constant 20 N/m on a horizontal, frictionless floor
The box oscillates in simple harmonic motion and has a speed of 1.5 m/s at the equilibrium position. (a) What is the amplitude of vibration? (b) At what distance from the equilibrium position are the kinetic energy and the potential energy the same?
Scientific models should be falsifiable, that is, they should be able to be provenfalse
What will be an ideal response?