Answer the following statement(s) true (T) or false (F)
1. The three bulbs are in parallel. T or F?
2. In a circuit, all the current follows whatever is the path of least resistance.
1. FALSE
2. FALSE
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A transverse periodic wave is represented by the equation y(x, t) = 1.50 cm sin(1,500 rad/s t - 10.0
x). Another transverse wave is represented by the equation y(x, t) = 1.50 cm sin(1,500 rad/s t - 10.0
x). What is the equation that represents the superposition of the two waves?
A. y(x, t) = 3.0 cm sin(1,500 rad/s t - 10.0
x)
B. y(x, t) = 3.0 cm sin(1,500 rad/s t) cos(10.0x)
C. y(x, t) = +3.0 cm cos(1,500 rad/s t) sin(10.0x)
D. y(x, t) = 3.0 cm sin(1,500 rad/s t + 10.0x)
A student weighing 700 N climbs a flight of stairs 5.0 m high in 10 s. What power was required?
In an analysis relating Bohr's theory to the de Broglie wavelength of electrons, when an electron moves from the n = 1 level to the n = 3 level, the circumference for its orbit becomes 9 times greater. This occurs because:
a. the wavelength of the electron becomes nine times as long. b. there are triple as many wavelengths, and each wavelength is triple in length. c. there are nine times as many wavelengths in the new orbit. d. the electron is moving nine times as fast.
The law of conservation of momentum is applicable to systems made up of objects described by which of the following?
a. macroscopic b. microscopic c. interacting through friction d. All the above choices are valid.