These two skaters have just pushed off against one another. One skater has twice the mass as the other. Which one will experience the greater velocity?
A. The heavier skater
B. The lighter skater
C. Neither, they both have the same
B. The lighter skater
?p is the same for both, but the masses are vastly different, so velocities are very different!
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A 14.0-V battery is connected in series with a switch, 5.0-? resistor and coil. What energy is stored in the coil when the current is 2.8 A? The time constant is 4.8 × 10^?4 s
a. 9.4E–3 J b. 1.9E–2 J c. 6.7E–3 J d. 3.8E–3 J e. 1.2E–3 J
A sled of mass 10. kg slides down a flat hill that makes an angle of 10.° with the horizontal. If friction is negligible, what is the resultant force on the sled?
What will be an ideal response?
What is the intensity of a 70-dB sound? The threshold of human hearing is 1.0 × 10-12 W/m2
A) 10-4 W/m2 B) 10-5 W/m2 C) 10-6 W/m2 D) 10-7 W/m2