Consider the following procedural steps:
(1) ground the electroscope
(2) remove the ground from the electroscope
(3) touch a charged rod to the electroscope
(4) bring a charged rod near, but not touching, the electroscope
(5) remove the charged rod
To charge an electroscope by induction, use the sequence:
A) 1, 4, 5, 2
B) 4, 1, 2, 5
C) 3, 1, 2, 5
D) 4, 1, 5, 2
E) 3, 5
B) 4, 1, 2, 5
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Hubble's constant is about 22 km/s/million light-years, implying an age of about 14 billion years for the universe. If Hubble's constant were 11 km/s/million light-years, the age of the universe would be about
A) 7 billion years. B) 14 billion years. C) 28 billion years. D) Impossible to say, because Hubble's constant has no relationship to the age of the universe.
The ________ magnitude of a star depends on its luminosity and distance from us
Fill in the blank(s) with correct word
A 5.00-m-long uniform ladder, weighing 200 N, rests against a smooth vertical wall with its base on a horizontal rough floor, a distance of 1.20 m away from the wall. The coefficient of static friction between the ladder and the floor is 0.200
How far up the ladder, measured along the ladder, can a 600-N person climb before the ladder begins to slip? A) 1.50 m B) 1.26 m C) 1.05 m D) 3.95 m E) 4.56 m
When studying the structure of ocean waves one could look at all of the following except _______.
a. Wave length b. Tidal force c. Wave height d. Period