A harmonic wave travels in the positive x direction at 12 m/s along a taught string. A fixed point on the string oscillates as a function of time according to the equation y = 0.038 cos(3t)
where y is the displacement in meters and the time t is in seconds
(a) What is the amplitude of the wave, in meters?
(b) What is the frequency of the wave, in hertz?
(c) What is the wavelength of the wave, in meters?

The passage that directs air to the lungs is called a. diaphragm. b. larynx. c. bronchi. d. pharynx.

The cerebellum controls? thirst sensations sleep-wake cycles hand-eye coordination heart rate and pulse

Place several e-field sensors at a few points on different equipotential lines, and look at the relationship between the electric field and the equipotential lines. which statement is true? 1-at any point, the electric field is perpendicular to the equipotential line at that point, and it is directed toward lines of higher voltages. 2-at any point, the electric field is perpendicular to the equipotential line at that point, and it is directed toward lines of lower voltages. 3-at any point, the electric field is parallel to the equipotential line at that point.