A body is oscillating up and down at the end of a spring. Let's consider when the body is at the top of its up and down motion The displacement vector from the equilibrium position has its largest magnitude.
Indicate whether the statement is true or false
[Ques. 2] Millikan's experiments on balancing charged oil droplets in an electric field first showed that:
a. electrons have a definite charge to mass ratio, which he measured.
b. electric charges are integer multiples of a single fixed electron charge, which he measured.
c. photons have energy E = hf for frequency f.
d. electrons have negative charge.
e. protons are positively charged.
[Ques. 3] A body is oscillating up and down at the end of a spring. Let's consider when the body is at the top of its up and down motion The velocity points down.
Indicate whether the statement is true or false
[Ques. 4] Where did Thomson's model place electrons in the atom?
a. Studded throughout a positively-charged material.
b. Rotating around a positively-charged core.
c. Uniformly distributed in the atom.
d. Clustered in the center of a positively-charged sphere.
e. At the two magnetic poles of the atom.
[Ques. 5] A body is oscillating up and down at the end of a spring. Let's consider when the body is at the top of its up and down motion The acceleration is zero.
Indicate whether the statement is true or false
[Ques. 6] What did Thomson discover about the electron that changed a long-accepted idea about atoms?
a. That electrons are negatively charged.
b. That electrons do not respond to a magnetic field.
c. That electrons are smaller than atoms.
d. That electrons respond to an electric field.
e. That they were ionized.
[Ques. 7] A body is oscillating up and down at the end of a spring. Let's consider when the body is at the top of its up and down motion The net force points downward.
Indicate whether the statement is true or false
[Ques. 8] Which of these is true about the relationship between the absorption spectrum and the emission spectrum of a given gas?
a. The emission spectrum has fewer lines than the absorption spectrum.
b. The absorption spectrum is multicolored bright lines while the emission spectrum is dark lines.
c. All the lines in the emission spectrum correspond to lines in the absorption spectrum.
d. All the lines in the absorption spectrum correspond to lines in the emission spectrum.
e. Helium was discovered from emission spectra.
[Ques. 9] A body is oscillating up and down at the end of a spring. Let's consider when the body is at the top of its up and down motion The net force on the body has its largest magnitude.
Indicate whether the statement is true or false
[Ques. 10] Low-pressure sodium lights produce light that consists only of the colors in the emission spectra of sodium. From the emission spectra in this figure, what is the color of low-pressure sodium light?
a. red
b. yellow
c. green
d. blue
e. white
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