Uniform Circular Motion: A jet plane flying 600 m/s experiences an acceleration of 4.0 g when pulling out of the circular section of a dive. What is the radius of curvature of this section of the dive?
A. 1.2 km
B. 5.8 km
C. 0.64 km
D. 9.2 km
E. 7.0 km
Answer: D
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Index of Refraction: The speed of light in a certain material is measured to be 2.2 × 108 m/s. What is the index of refraction of this material? (c = 3.0 × 108 m/s)
A. 1.1 B. 1.2 C. 1.4 D. 1.6 E. 1.8
Earth's magnetic field has reversed itself
Indicate whether the statement is true or false
A beam splitter is an essential part of the Michelson interferometer. Which of the following best describes how it works?
1.It is an electronic device which, like a train switch, directs half of the light it receives up, and the rest straight ahead. 2.It is a 45° angle mirror which reflects half the light sideways and lets the other half through. 3.It is a mirror that rotates at the light source's frequency, such that half the light it receives is reflected upward, and the other half is let through. 4.It is much like a double slit, but one of the slits directs the light upwards.
In water, does the molecule lysergic acid diethylamide act as an acid, a base, neither or both?
A) acid B) base C) neither an acid or a base D) both as an acid and as a base