Because of time dilation, if a twin goes on a trip in a high speed rocket ship, when she returns home she will be younger than her twin sister who did not go on the trip
Indicate whether the statement is true or false
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What is the proper abbreviation for ‘grams?'
a. g b. gms c. gm d. gr e. kg
A series RC circuit has a time constant of 0.900 s. The battery has an emf of 24.0 V, and the maximum current in the circuit is 0.500 mA.What is the charge stored in the capacitor 2.00 s after the switch is closed?
a. 401 ?C b. 18.8 ?C c. 108 ?C d. 450 ?C
Spherical Mirrors: A concave mirror having a focal length of magnitude 5.0 cm forms an image 4.0 cm behind the mirror. Where is the object for this image?
A. 2.2 cm in front of the mirror B. 2.2 cm behind the mirror C. 9.0 cm in front of the mirror D. 1.0 cm behind the mirror E. 20 cm behind the mirror
A thermodynamic engine receives 7000 J of energy and loses 3000 J in each cycle. What is the efficiency of this engine?
A) 57% B) 30% C) 70% D) 43%