What is the equivalent resistance between points a and b?
A. 14 ?
B. 8.0 ?
C. 6.0 ?
D. 25 ?
E. 40 ?
Answer: D
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In a ballistics test, a 1.50-g bullet is fired through a 28.0-kg block traveling horizontally toward the bullet
In this test, the bullet takes 11.4 ms to pass through the block as it reverses the block's velocity from 1.75 m/s to the right to 1.20 m/s to the left with constant acceleration. Find the magnitude of the force that the bullet exerts on the block during this ballistics test.
The longest-daylight day for people in the Northern Hemisphere at latitudes greater than 25°N occurs when the noon Sun is overhead at the
a. Greenwich meridian. b. Tropic of Cancer. c. equator. d. Tropic of Capricorn.
Your favorite radio station is located due north of your house and broadcasts using a horizontal electric dipole antenna directed north-south. To receive this signal you need to
A. move to a town that is farther to the east or west. B. use a magnetic dipole antenna instead of an electric dipole antenna. C. orient the receiving antenna horizontally north-south. D. use a vertical receiving antenna.
The main producer of sediment is
A) mechanical weathering. B) ice wedging. C) chemical Weathering. D) erosion.