The de Broglie wavelength of a 0.060-kg golf ball is 3.56 × 10^-34 m. What is its speed? (h = 6.63 × 10^-34 J×s)
a. 31 m/s
c. 26 m/s
b. 15 m/s
d. 48 m/s
A
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The Babcock model employs differential rotation of the solar surface and a magnetic dynamo to describe the formation of sunspots
a. True b. False Indicate whether the statement is true or false
The position function x(t) of a particle moving along an x axis is x = 5.00 - 6.00t2, with x in meters and t in seconds. (a) At what time and (b) where does the particle (momentarily) stop? At what (c) negative time and (d) positive time does the particle pass through the origin?
Which one of the following is responsible for the "one-way" nature of time, i.e., for the distinction between past and future?
A) the law of inertia B) the law of conservation of energy C) the second law of thermodynamics D) the gravitational force E) the electromagnetic force
An object with a temperature of 8000 K is brightest in the _________ and an object at 4000 K is brightest in the _________
a. infrared/ultraviolet b. visible region/infrared c. blue range/red range d. ultraviolet/green range e. ultraviolet/infrared