Which of the following is (are) invariant(s)?
A. mass
B. momentum
C. energy
D. the speed of light
E. mass and the speed of light
E. mass and the speed of light
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Indicate whether the statement is true or false
Astronaut Jennifer's lifeline to her spaceship comes loose and she finds herself stranded, "floating" 100. m from the mothership. She throws her 2.00 kg wrench at 20.0 m/s in a direction away from the ship
If she and her spacesuit have a combined mass of 200. kg how long does it take her to coast back to her spaceship? A) 1000. s B) 750. s C) 250. s D) 2.50 minutes E) 500. s
Will the Sun become a brown dwarf? Explain
What will be an ideal response?
A magnifying lens of power d (in diopters) gives what magnification when the viewing eye is relaxed assuming a near point of 25 cm?
a. 25d b. 0.25/d c. d/4 d. The correct answer is not given.