The captain of spaceship A observes enemy spaceship E escaping with a relative velocity of 0.48c, as shown in the figure. A missile M is fired from ship A, with a velocity of 0.72c relative to ship A
What is the relative velocity of approach of missile M, observed by the crew on
ship E?
A) 0.37c
B) 0.24c
C) 0.34c
D) 0.30c
E) 0.27c
Answer: A
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In order for clouds to form, air must be lifted. The three principal lifting mechanisms are
A) orographic, condensational, and frontal lifting. B) orthographic, conversational, and frontal lobotomy. C) convectional, orographic, and frontal lifting. D) adiabatic, topographic, and inversional lifting.
A 2.00-kg object is attached to an ideal massless horizontal spring of spring constant 100.0 N/m and is at rest on a frictionless horizontal table. The spring is aligned along the x-axis and is fixed to a peg in the table
Suddenly this mass is struck by another 2.00-kg object traveling along the x-axis at 3.00 m/s, and the two masses stick together. What are the amplitude and period of the oscillations that result from this collision? A) 0.300 m, 1.26 s B) 0.300 m, 0.889 s C) 0.424 m, 0.889 s D) 0.424 m, 1.26 s E) 0.424 m, 5.00 s
Force on a Moving Charge: A charged particle moving along the +x-axis enters a uniform magnetic field pointing along the +z-axis. A uniform electric field is also present. Due to the combined effect of both fields, the particle does not change its velocity. What is the direction of the electric field?
A. along the -y-axis B. along the +y-axis C. along the -x-axis D. along the +x-axis E. along the -z-axis
The Galileo spacecraft showed that volcanic features on Io could change in ________
Fill in the blank(s) with correct word