Equation of Traveling Waves: The vertical displacement y(x,t) of a horizontal string aligned along the x-axis is given by the equation y(x,t) = (6.00 mm) cos[(3.25 m-1)x - (7.22 s-1)t]. What are the (a) wavelength and (b) period of this wave?
What will be an ideal response?
(a) 1.93 m (b) 0.870 s
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Which of the following is not considered crucial for life to exist on some world?
A) a liquid, such as liquid water B) a source of energy that can be used by life C) a source of nutrients D) an atmosphere
A uniform solid disk of radius 1.60 m and mass 2.30 kg rolls without slipping to the bottom of an inclined plane. If the angular velocity of the disk is at the bottom, what is the height of the inclined plane?
A) 5.61 m B) 4.21 m C) 4.94 m D) 6.73 m
What is the escape speed from a planet of mass m and radius r if m = 3.2 × 10^23 kg and r = 2.4 × 10^6 m?
a. 5.5 km/s b. 4.2 km/s c. 5.2 km/s d. 4.8 km/s e. 3.7 km/s
Hawaii's weather is chiefly affected by what type of air mass?
a. mA b. mP c. cP d. mT