Three identical 50-kg balls are held at the corners of an equilateral triangle, 30 cm on each side
If one of the balls is released, what is the magnitude of its initial acceleration if the only forces acting on it are the gravitational forces due to the other two masses? (G = 6.67 × 10-11 N ? m2/kg2 )
A) 4.2 × 10-8 m/s2
B) 3.7 × 10-8 m/s2
C) 1.9 × 10-8 m/s2
D) 6.4 × 10-8 m/s2
E) 2.5 × 10-8 m/s2
D
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A positively charged insulating rod is brought close to an object that is suspended by a string. If the object is attracted toward the rod we can conclude:
A) the object is positively charged B) the object is negatively charged C) the object is an insulator D) the object is a conductor E) none of the above
The complete cycle of lunar phases takes 29.53 days, also known as the Moon's ____________________ period
Fill in the blank(s) with correct word
Meters: A galvanometer has a coil with a resistance of 24.0 ?, and a current of 180 ?A causes full-scale deflection. If the galvanometer is to be used to construct an ammeter that deflects full scale for 10.0 A, what shunt resistor is required?
A. 234 ?? B. 342 ?? C. 432 ?? D. 423 ??
All of the jovian planets rotate more rapidly than any of the terrestrial planets
Indicate whether the statement is true or false