The ______________ angle is measured between the horizon and the line of sight to the object
a. declination
b. altitude
c. inclination
d. zenith
b
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A circus performer stretches a tightrope between two towers. He strikes one end of the rope and sends a wave along it toward the other tower. He notes that it takes 0.8 s for the wave to travel the 20 m to the opposite tower. If one meter of the rope has a mass of 0.35 kg, find the tension in the tightrope.
What will be an ideal response?
Astronaut Rachel leaves Earth in a spaceship at a speed of 0.960c relative to an observer on Earth
Rachel's destination is a star system 14.4 light-years away (one light-year is the distance light travels in one year). According to Rachel, how long does the trip take? A) 14 years B) 15 years C) 11 years D) 4.2 years E) 23 years
Solar power is the rate at which
A) the Sun emits energy. B) solar energy is received from the Sun. C) the atmosphere absorbs energy. D) all of the above E) none of the above
The tidal stresses that create Io's volcanism come from Jupiter and
A) Titan. B) the Sun. C) Callisto. D) Europa. E) Ganymede.