The hang time of an athlete who moves horizontally 2.0 m during a 1.25-m-high jump is
A) less than 1 s.
B) about 1 s.
C) more than 1 s.
Answer: B
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An electron and an alpha particle (a helium-4 nucleus) each have the same non-relativistic speed. Which has the greatest kinetic energy, and which has the shortest de Broglie wavelength?
a. the alpha particle, the alpha particle b. the alpha particle, the electron c. the electron, the alpha particle d. the electron, the electron
The method of dating the ages of rock and fossils using isotopic abundances is referred to as
A) radiometric dating B) speed dating C) dendrochronology D) radiochronology
Doubling the current, number of turns, the area, and the ambient magnetic field for a coil changes the maximum torque it experiences by what factor?
A. 2 B. 4 C. 8 D. 16 E. 32
A stationary electric charge produces a magnetic field around it
Indicate whether the statement is true or false