Radioactive Decay: The decay rate of a radioactive sample decreases from 175 kBq to 12.4 kBq in 18.3 s. What is the decay constant of this sample?
Fill in the blank(s) with the appropriate word(s).
0.145 s-1
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General Questions: A small car and a large SUV are at a stoplight. The car has a mass equal to half that of the SUV, and the SUV can produce a maximum accelerating force equal to twice that of the car. When the light turns green, both drivers push their accelerators to the floor at the same time. Which vehicle pulls ahead of the other vehicle after a few seconds?
A. The car pulls ahead. B. The SUV pulls ahead. C. It is a tie.
A star with a right ascension of 2.6 hrs will rise 2.6 hours after the vernal equinox
Indicate whether the statement is true or false
Suppose a 5.0-meter diameter telescope were constructed on the dark side of the moon. The viewing there (except for brief periods of sunlight) would be excellent. As an example, what would be the separation between two objects that could just be resolved on the planet Mars in 500 nm light? [The distance to Mars at closest approach is 50 million miles.]
A(n) ______ is a single point in an electronic image.
A. serif B. simbit C. pixel D. pica