The deviation from the way a compass needle points from the true north direction is the magnetic declination
a. True
b. False
Indicate whether the statement is true or false
True
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A baseball pitcher, loosening up his arm before a game, tosses a 0.140-kg ball using only the rotation of his forearm, 0.290 m in length, to accelerate the ball. If the ball starts at rest and is released with a speed of 24.0 m/s in a time of 0.450 s, what is the average angular acceleration of the arm and ball?
a. 3.13 rad/s2 b. 37.2 rad/s2 c. 15.5 rad/s2 d. 184 rad/s2 e. 25.7 rad/s2
If a K0 meson at rest decays in 0.80 × 10^?10 s, how far will a K0 meson moving at 0.96c travel through a bubble chamber? (c = 3.00 × 10^8 m/s)
a. 8.2E–2 m b. 2.3E–2 m c. 6.5E–3 m d. 1.2E–1 m e. 4.6E–3 m
What do we call a specific pattern of stars in the sky, often named for an animal?
A. a star animal B. a cluster C. the ecliptic D. a constellation
According to general relativity, what is a black hole?
A) a hole in the observable universe B) an object that cannot be seen C) a place where light travels slower than the normal speed of light D) a place where the strength of gravity is infinite