The constellations are an ancient heritage handed down for thousands of years as ways to tell stories of mythical heroes and monsters
a. True
b. False
Indicate whether the statement is true or false
True
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Conservation of Momentum: A 14-cm diameter champagne bottle rests on its side on top of a frictionless horizontal table. Suddenly, the cork pops and the bottle slides backward, covering a distance of 22.0 cm in 0.44 s. If the mass of the bottle is 500 times the mass of the cork, find the distance from the original position that the cork will land on the table. Neglect air resistance and assume that the cork is very small compared to the bottle.
A. 3000 cm B. 60 m C. 85 m D. 8.5 cm
Nanoscience has shown that
A) a chemical occurs with the use of a scanning probe microscope. B) the properties of a material can be different on the level of atoms then its properties when the material is analyzed in bulk. C) a physical change can occur when using a scanning probe microscope. D) DNA is the smallest molecule.
When light of one wavelength from air hits a smooth piece of glass at an angle, which of the following will not occur?
a. refraction c. reflection b. dispersion d. All of these choices will occur.
In a LRC circuit, a second capacitor is connected in series with the capacitor previously in the circuit. What is the effect of this change on the impedance of the circuit?
A) It increases. B) It decreases. C) It does not change. D) It increases for frequencies below resonance and decreases for frequencies above resonance. E) It decreases for frequencies below resonance and increases for frequencies above resonance.