Jane has about $536 in her checking account, about $2107 in her savings account and exactly $7.62 in her purse. To the best precision possible, how much money does Jane have?
A) $2651
B) $2,650
C) $2,650.6
D) $2,650.62
E) $2,650.620
A
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The star Vega has an absolute magnitude of about 4 and an apparent magnitude of about 0. Based on the definitions of absolute and apparent magnitude, we can conclude that
A) Vega is nearer than 10 parsecs from Earth. B) Vega has a parallax angle of 1/10 arcsecond. C) Vega's luminosity is less than that of our Sun. D) Vega's surface temperature is cooler than the Sun.
Recent experiments suggest that the lifetime of the proton is over 1033 years, more than what is predicted by the simplest grand unified theories
a. True b. False Indicate whether the statement is true or false
When the reflection of an object is seen in a plane mirror, the distance from the mirror to the image depends on
a. the wavelength of light used for viewing. b. the distance from the object to the mirror. c. the distance of both the observer and the object to the mirror. d. the size of the object.
You can increase the temperature of a gas by compressing it
Indicate whether the statement is true or false