If a bullet is fired into a wooden block and remains lodged in the block, the collision was ________.
What will be an ideal response?
inelastic
perfectly inelastic
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Analysis of stellar spectra shows that most stars consist of 71% ________, 27% ________, and a 2% mix of the other elements.
A. hydrogen; helium B. hydrogen; oxygen C. helium; hydrogen D. oxygen; nitrogen
A soccer ball whose radius is 11 cm rolls a distance of 10 m in 3.50 s. What is the angular speed of the ball?
A) 5.1 m/s B) 13 m/s C) 26 m/s D) 39 m/s E) 52 m/s
The neap tide can occur at the ________ or ________ phases of the Moon
Fill in the blank(s) with correct word
A stone is thrown with an initial speed of 15 m/s at an angle of 53° above the horizontal from the top of a 40-m building. If g = 9.8 m/s2 and air resistance is negligible, then what is the magnitude of the vertical velocity component of the rock as it hits the ground?
a. 30 m/s c. 26 m/s b. 24 m/s d. 29 m/s