Process of Science: Give a scientific explanation of the success of the central African rainfall-prediction technique of observing the waxing crescent Moon. Can the Moon cause a change in rainfall? Or vice versa?
What will be an ideal response?
The Moon's orientation varies seasonally, and so does the weather, so the orientation and the weather are correlated, but one does not cause the other.
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As a body falls through air starting from rest, its acceleration
a. is zero b. stays constant c. continuously decreases d. continuously increases e. gets smaller and smaller, eventually approaching zero
The largest units of geologic time are called ______________
Fill in the blank(s) with correct word
A string is wrapped tightly around a fixed pulley that has a moment of inertia of 0.0352 kg ? m2 and a radius of 12.5 cm. An object of mass of 423 g is attached to the free end of the string
With the string vertical and taut, the object is gently released so it can descend doe to the gravitational force exerted on it by Earth. As the object descends, the string unwinds and causes the pulley to rotate, but does not slip on the pulley. What is the speed of the object after it has fallen through 1.25 m? A) 2.00 m/s B) 2.28 m/s C) 1.97 m/s D) 3.94 m/s E) 4.95 m/s
A C note (f = 256 Hz) is sounded on a piano. If the length of the piano wire is 1.8 m and its mass density is 2.2 g/m, what is the tension in the wire?
a. 6.4E+1 N b. 1.4E+2 N c. 1.9E+3 N d. 1.1E+3 N e. 5.6E+2 N