Centripetal force changes linear momentum but not angular momentum
Indicate whether the statement is true or false
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Uncertainty Principle Using Momentum and Position: Suppose that the speed of an electron traveling 1.0 km/s is known to an accuracy of 1 part in 10,000 (that is, within 0.01%). What is the minimum uncertainty in the position of this electron? (melectron = 9.11 × 10-31 kg, h = 6.626 × 10-34 J ? s)
Fill in the blank(s) with the appropriate word(s).
Notice that Earth's axis is shown with an arrowhead in this diagram. What does the arrow point to?
A) the Sun B) the ecliptic plane C) the center of the Milky Way Galaxy D) Polaris, the North Star E) the Northern lights
The fundamental force underlying all chemical reactions is
A) gravitational. B) nuclear. C) centripetal. D) electrical. E) none of the above
A 40.0-g block of ice at -15.00°C is dropped into a calorimeter (of negligible heat capacity) containing water at 15.00°C. When equilibrium is reached, the final temperature is 8.00°C
How much water did the calorimeter contain initially? The specific heat of ice is 2090 J/kg ? K, that of water is 4186 J/kg ? K, and the latent heat of fusion of water is 33.5 × 104 J/kg. A) 302 g B) 345 g C) 405 g D) 546 g E) 634 g