A ball of aluminum is at a depth of 100.0 m under water whose density is 
The bulk stress on the ball due to the water is
a. 
b. 
c. 
d. 
e. 
b.
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A(n)__________is a sensitive astronomical instrument that measures the brightness of individual objects very precisely
A) photometer B) grating C) charge-coupled device D) array detector
Suppose you are sitting in a closed room that is magically transported off Earth so that, as shown in the diagram, you are accelerating through space at 9.8 m/s2. According to the equivalence principle, how will you know that you've left Earth?
A) You won't know that you've left Earth. B) by looking out the window C) by the fact that you'll become weightless D) by the fact that you'll feel yourself pressed harder against the floor
At most, how many bright fringes can be formed on each side of the central bright fringe (not counting the central bright fringe) when light of 625 nm falls on a double slit whose spacing is 1.97 × 10-6 m?
A) 1 B) 2 C) 3 D) 4 E) 5
Like charges _________, unlike charges __________
Fill in the blank(s) with correct word