The Other Frame is moving in the +x direction with x-velocity ? = 0.25 with respect to the Home Frame. The two-observer space time diagram in figure R5.9 shows the diagram t and x axes of the Home Frame and the diagram t? axis of the Other Frame. Which of the choices in that figure would best correspond to the diagram x? axis if the Newtonian concept of time were true?
Answer: D
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A tank with a volume of 0.200 m3 contains 27.0°C helium gas at a pressure of 63.5 atm. How many balloons can be blown up if each filled balloon is a sphere 30.0 cm in diameter at 27.0°C and absolute pressure of 1.20 atm? Assume all the helium is transferred to the balloons
a. 1180 balloons c. 749 balloons b. 884 balloons d. 375 balloons
A string is wrapped tightly around a fixed pulley that has a moment of inertia of 0.0352 kg ? m2 and a radius of 12.5 cm. An object of mass of 423 g is attached to the free end of the string
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Which statement is true about Newton's first law of motion?
a. It was completely invented by Newton. b. It was an addition to and improvement of Galileo's observations. c. It was just a better way to state what Galileo had learned a long time before. d. It restated the ideas of Aristotle. e. Newton, according to legend, formulated it upon seeing an apple fall to the ground.
Initially, the light puck is moving east at 3 m/s while the heavy puck is moving west at 2 m/s. The final velocity of the conjoined pucks is
A. Eastward. B. Westward. C. Zero. D. Impossible to determine. E. Some other direction (explain).