Consider a very small hole in the bottom of a tank 20.0 cm in diameter filled with water to a height of 50.0 cm. Find the speed at which the water exits the tank through the hole
A) 3.13 m/s
B) 9.80 m/s
C) 31.8 m/s
D) 34.9 m/s
A
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A 2.3 cm tall statue is 15. cm in front of a convex mirror. The mirror radius of curvature is 18. cm. (a) Is the image real or virtual? (b) How far is the image from the mirror? (c) Is the image upright or inverted? (d) How high is the image?
What will be an ideal response?
What is the formula of a compound formed from the ions M3+ and X2-?
a. M2X b. MX c. M2X3 d. MX2
All the planets revolve around the Sun in the same direction, except for Venus and Uranus
Indicate whether the statement is true or false
A parallel plate capacitor is charged to voltage V and then disconnected from the battery. Leopold says that the voltage will decrease if the plates are pulled apart. Gerhardt says that the voltage will remain the same. Which one, if either, is correct, and why?
a. Gerhardt, because the maximum voltage is determined by the battery. b. Gerhardt, because the charge per unit area on the plates does not change. c. Leopold, because charge is transferred from one plate to the other when the plates are separated. d. Leopold, because the force each plate exerts on the other decreases when the plates are pulled apart. e. Neither, because the voltage increases when the plates are pulled apart.